{"id":2019,"date":"2026-09-18T06:55:05","date_gmt":"2026-09-18T06:55:05","guid":{"rendered":"https:\/\/superiortransmissioninc.com\/?post_type=product&p=2019"},"modified":"2026-09-18T06:55:06","modified_gmt":"2026-09-18T06:55:06","slug":"ep-stainless-steel-worm-gear-for-cnc-machinery","status":"publish","type":"product","link":"https:\/\/superiortransmissioninc.com\/uk\/product\/ep-stainless-steel-worm-gear-for-cnc-machinery\/","title":{"rendered":"\u0427\u0435\u0440\u0432'\u044f\u0447\u043d\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0430 \u0437 \u043d\u0435\u0440\u0436\u0430\u0432\u0456\u044e\u0447\u043e\u0457 \u0441\u0442\u0430\u043b\u0456 EP \u0434\u043b\u044f \u0432\u0435\u0440\u0441\u0442\u0430\u0442\u0456\u0432 \u0437 \u0427\u041f\u041a"},"content":{"rendered":"
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CNC MACHINERY & INDUSTRIAL DRIVE COMPONENTS \u2014 WORM GEAR SERIES<\/p>\n

\u0427\u0435\u0440\u0432'\u044f\u0447\u043d\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0430 \u0437 \u043d\u0435\u0440\u0436\u0430\u0432\u0456\u044e\u0447\u043e\u0457 \u0441\u0442\u0430\u043b\u0456 EP \u0434\u043b\u044f \u0432\u0435\u0440\u0441\u0442\u0430\u0442\u0456\u0432 \u0437 \u0427\u041f\u041a<\/h2>\n

A precision-machined steel worm gear<\/strong> and worm wheel series \u2014 stainless steel, carbon steel, brass, bronze, and alloy construction \u2014 hardness 55\u201360 HRC, pressure angle 20\u00b0, ISO standard sizing, and full heat treatment options, engineered for CNC machine tools, industrial reducers, and precision drive systems worldwide.<\/p>\n

\u0427\u0435\u0440\u0432'\u044f\u0447\u043d\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0430\u00a0<\/a><\/div>\n<\/div>\n

<\/p>\n

Technical Specifications \u2014 EP Steel Worm Gear and Worm Wheel Series<\/h2>\n

General product parameters for the EP series.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\nEP Series Specification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\nWorm Gear and Worm Wheel<\/td>\n<\/tr>\n
Materials Available<\/td>\nStainless Steel, Carbon Steel, Brass, Bronze, Iron, Aluminum Alloy, Copper, Plastic, Nylon, PA66, MC, PEEK, MSM, POM, Delrin<\/td>\n<\/tr>\n
Heat Treatment<\/td>\nQuenching and Tempering; Carburizing and Quenching; High-frequency Hardening; Carbonitriding<\/td>\n<\/tr>\n
\u041e\u0431\u0440\u043e\u0431\u043a\u0430 \u043f\u043e\u0432\u0435\u0440\u0445\u043d\u0456<\/td>\nCarburizing and Quenching; Tempering; Tooth surface high-frequency quenching Hardening; Tempering<\/td>\n<\/tr>\n
Bore Type<\/td>\nFinished bore; Pilot Bore; Special request<\/td>\n<\/tr>\n
Processing Method<\/td>\nMolding, Shaving, Hobbing, Drilling, Tapping, Reaming, Manual Chamfering, Grinding<\/td>\n<\/tr>\n
Pressure Angle<\/td>\n20\u00b0<\/td>\n<\/tr>\n
\u0422\u0432\u0435\u0440\u0434\u0456\u0441\u0442\u044c<\/td>\n55\u201360 HRC<\/td>\n<\/tr>\n
Twisting Direction<\/td>\nL (Left) \/ R (Right)<\/td>\n<\/tr>\n
Size Reference<\/td>\nCustomer Drawings and ISO standard<\/td>\n<\/tr>\n
Package<\/td>\nWooden Case \/ Container and pallet; or made-to-order<\/td>\n<\/tr>\n
Certificate<\/td>\nISO9001:2008<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Dimensional reference table \u2014 Module 1.0 to 3.0 worm wheel configurations (shaft bore AH7 1 mm increment). Dimensions B, C, D, E, F, G in mm.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0422\u0438\u043f<\/th>\n\u041c\u043e\u0434\u0443\u043b\u044c<\/th>\nNo. of Teeth<\/th>\nStraight Bore \u00d8 (mm)<\/th>\nKeyway+Tap Bore \u00d8 (mm)<\/th>\nTwist Dir.<\/th>\nB (mm)<\/th>\nC (mm)<\/th>\nD (mm)<\/th>\nF (mm)<\/th>\nG (mm)<\/th>\n<\/tr>\n<\/thead>\n
Straight Bore \/ Keyway+Tap<\/td>\n1.0<\/td>\n20<\/td>\n6<\/td>\n8<\/td>\nL \/ R<\/td>\n17<\/td>\n20<\/td>\n22<\/td>\n10<\/td>\n18<\/td>\n<\/tr>\n
22\u201328<\/td>\n8<\/td>\n8\u201313<\/td>\n18\u201320<\/td>\n22\u201328<\/td>\n24\u201330<\/td>\n<\/tr>\n
30\u201348<\/td>\n10<\/td>\n10\u201317<\/td>\n25\u201330<\/td>\n30\u201348<\/td>\n32\u201350<\/td>\n<\/tr>\n
50\u201370<\/td>\n12<\/td>\n12\u201317<\/td>\n35\u201340<\/td>\n50\u201370<\/td>\n52\u201372<\/td>\n<\/tr>\n
80\u2013100<\/td>\n15<\/td>\n15\u201330<\/td>\n50<\/td>\n80\u2013100<\/td>\n82\u2013102<\/td>\n<\/tr>\n
Straight Bore \/ Keyway+Tap<\/td>\n1.5<\/td>\n20\u201326<\/td>\n12<\/td>\n12\u201317<\/td>\n24\u201332<\/td>\n30\u201339<\/td>\n33\u201342<\/td>\n12<\/td>\n24<\/td>\n<\/tr>\n
28\u201344<\/td>\n15<\/td>\n15\u201330<\/td>\n36\u201350<\/td>\n42\u201367.5<\/td>\n45\u201370.5<\/td>\n<\/tr>\n
45\u201352<\/td>\n18<\/td>\n18\u201340<\/td>\n50\u201360<\/td>\n72\u201378<\/td>\n75\u201381<\/td>\n<\/tr>\n
60\u2013100<\/td>\n20<\/td>\n20\u201350<\/td>\n60\u201370<\/td>\n90\u2013150<\/td>\n93\u2013153<\/td>\n<\/tr>\n
Straight Bore \/ Keyway+Tap<\/td>\n2.0<\/td>\n15\u201318<\/td>\n12<\/td>\n12\u201317<\/td>\n24\u201330<\/td>\n30\u201336<\/td>\n34\u201340<\/td>\n13<\/td>\n29<\/td>\n<\/tr>\n
20\u201328<\/td>\n15<\/td>\n15\u201322<\/td>\n32\u201345<\/td>\n40\u201356<\/td>\n44\u201360<\/td>\n<\/tr>\n
30\u201336<\/td>\n18<\/td>\n18\u201340<\/td>\n50<\/td>\n60\u201372<\/td>\n64\u201376<\/td>\n<\/tr>\n
40\u201348<\/td>\n20<\/td>\n20\u201344<\/td>\n60<\/td>\n80\u201396<\/td>\n84\u2013100<\/td>\n<\/tr>\n
50\u2013100<\/td>\n25<\/td>\n25\u201360<\/td>\n60\u2013100<\/td>\n100\u2013200<\/td>\n104\u2013204<\/td>\n<\/tr>\n
Straight Bore \/ Keyway+Tap<\/td>\n2.5<\/td>\n15\u201318<\/td>\n15<\/td>\n15\u201330<\/td>\n30\u201338<\/td>\n37.5\u201345<\/td>\n42.5\u201350<\/td>\n14<\/td>\n34<\/td>\n<\/tr>\n
20\u201324<\/td>\n18<\/td>\n18\u201340<\/td>\n40\u201348<\/td>\n50\u201360<\/td>\n55\u201365<\/td>\n<\/tr>\n
25\u201336<\/td>\n20<\/td>\n20\u201350<\/td>\n50\u201370<\/td>\n62.5\u201390<\/td>\n67.5\u201395<\/td>\n<\/tr>\n
40\u201360<\/td>\n25<\/td>\n25\u201370<\/td>\n70\u201380<\/td>\n100\u2013150<\/td>\n105\u2013155<\/td>\n<\/tr>\n
Straight Bore \/ Keyway+Tap<\/td>\n3.0<\/td>\n15\u201318<\/td>\n18<\/td>\n18\u201322<\/td>\n36\u201340<\/td>\n45\u201354<\/td>\n51\u201360<\/td>\n16<\/td>\n41<\/td>\n<\/tr>\n
20\u201328<\/td>\n20<\/td>\n20\u201340<\/td>\n45\u201355<\/td>\n60\u201384<\/td>\n66\u201390<\/td>\n<\/tr>\n
30\u201360<\/td>\n25<\/td>\n25\u201370<\/td>\n60\u201380<\/td>\n90\u2013180<\/td>\n96\u2013186<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

B = hub width (mm) \u00b7 C = face width (mm) \u00b7 D = pitch diameter (mm) \u00b7 F = hub diameter (mm) \u00b7 G = outside diameter (mm). All bore sizes AH7 tolerance, 1 mm increment. E column = keyway+tap bore, available on request. Contact engineering team for Module 3.5 and above.<\/p>\n

\"superiortransmissioninc-products-EP-Stainless<\/p>\n

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What Is a Steel Worm Gear \u2014 And Why Stainless Steel for CNC Applications?<\/h2>\n

\u0410 steel worm gear<\/strong> is a helical drive component pairing a worm screw (the driving element) with a worm wheel (the driven element) to transmit torque between two shafts arranged at 90\u00b0 to each other. The worm thread engages the worm wheel tooth flanks under a sliding contact, achieving high reduction ratios in a single compact stage while generating a self-locking effect at low lead angles. Among metal worm gear materials, stainless steel occupies a specific performance niche: it delivers the corrosion resistance of a passive oxide layer alongside the structural strength of an engineered steel alloy, making the stainless steel worm gear the standard selection for CNC machine tools, food processing equipment, pharmaceutical production lines, marine drives, and chemical plant actuators where carbon steel would rust or contaminate the process environment.<\/p>\n

The EP series steel worm gear<\/strong> and worm wheel set is specified as Worm Gear and Worm Wheel, with a comprehensive material portfolio: Stainless Steel, Carbon Steel, Brass, Bronze, Iron, Aluminum Alloy, Copper, Plastic, Nylon, PA66, MC, PEEK, MSM, POM, and Delrin. Heat treatment options include Quenching and Tempering, Carburizing and Quenching, High-frequency Hardening, and Carbonitriding. Surface treatment includes Carburizing and Quenching, Tempering, and Tooth surface high-frequency quenching Hardening and Tempering. Bore configurations cover Finished bore, Pilot Bore, and Special request. Processing methods span Molding, Shaving, Hobbing, Drilling, Tapping, Reaming, Manual Chamfering, and Grinding. Pressure angle is a standard 20\u00b0, hardness 55\u201360 HRC, sizing to Customer Drawings and ISO standard, packaged in Wooden Case \/ Container and pallet or made-to-order, certified to ISO9001:2008.<\/p>\n

For CNC machine tool builders and industrial machinery OEM procurement teams in Germany, Japan, Canada, South Korea, and Australia, the EP steel worm gear<\/strong> series delivers a single-source supply solution that covers both the stainless steel worm gear for corrosive environments and the case-hardened carbon steel worm gear for maximum load capacity \u2014 within the same dimensional standard, the same ISO quality framework, and the same lead time structure.<\/p>\n<\/div>\n

<\/p>\n

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Five Reasons to Specify a Stainless Steel Worm Gear<\/h2>\n
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\u2460 55\u201360 HRC Surface Hardness \u2014 Long-Cycle Fatigue Life<\/h3>\n

At 55\u201360 HRC, the EP series steel worm gear<\/strong> tooth surface operates in the hardness range where both contact fatigue resistance and bending fatigue strength are substantially above those of through-hardened or normalised steel. High-frequency hardening and carburizing and quenching processes localise this hardness to the tooth flank and root, leaving the core tough enough to absorb shock loads without brittle fracture. For CNC machine tool worm drive stages running at 500\u20131,500 RPM input speeds, this surface hardness specification is the primary factor governing gear service life before the surface fatigue limit is reached \u2014 which is why it is specified first in the EP series data sheet.<\/p>\n<\/div>\n

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\u2461 Corrosion-Resistant Stainless Steel \u2014 No Coating Required<\/h3>\n

A stainless steel worm gear’s passive oxide layer \u2014 the Cr\u2082O\u2083 film that forms spontaneously on austenitic stainless (304\/316) and martensitic stainless grades \u2014 provides corrosion resistance in humid, washdown, and mild chemical environments without the coating thickness variation that affects backlash in plated carbon steel worm gear sets. In food processing, pharmaceutical, and marine drive applications in the UK, Canada, and Australia, the stainless worm gear eliminates the re-plating maintenance intervals that are a recurring cost in carbon steel drives exposed to moisture or sanitising chemicals.<\/p>\n<\/div>\n

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\u2462 Complete Heat Treatment Portfolio<\/h3>\n

The breadth of heat treatment options in the EP series \u2014 Quenching and Tempering for through-hardness, Carburizing and Quenching for case hardness with tough core, High-frequency Hardening for selective tooth surface hardening, and Carbonitriding for improved wear resistance at moderate hardness \u2014 allows the correct treatment to be matched to each application’s combination of surface contact stress, core bending stress, and operating temperature. This is not a commodity gear range with a single heat treatment applied uniformly; it is an engineered steel worm gear<\/strong> production system that matches metallurgical process to application duty.<\/p>\n<\/div>\n

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\u2463 Full Processing Capability \u2014 Finished Bore to Special Request<\/h3>\n

Bore configurations spanning Finished bore, Pilot Bore, and Special request \u2014 combined with processing methods including Hobbing, Shaving, Grinding, Drilling, Tapping, Reaming, and Manual Chamfering \u2014 mean the EP steel worm gear<\/strong> can be delivered ready to mount on customer shafts without secondary machining operations at the customer’s facility. Keyway and tap configurations are available across the full module and tooth count range, saving assembly time and reducing in-house machining cost for machine tool builders and industrial gearbox OEM customers globally.<\/p>\n<\/div>\n

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\u2464 ISO Standard Sizing \u2014 Multi-Market Interchangeability<\/h3>\n

Sizing to Customer Drawings and ISO standard means EP series steel worm gear<\/strong> sets are dimensionally interchangeable with existing ISO-compliant worm gear drives in machine tools built to DIN, JIS, and AGMA standards. For maintenance procurement teams replacing worn worm gear sets in CNC machine tools in Germany, Japan, Canada, and Australia, this ISO traceability eliminates the fit-and-function verification burden that would arise if the replacement gear came from a non-standard dimensional reference system. ISO9001:2008 factory certification provides the auditable quality system background that regulated OEM supply chains require.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Material Portfolio \u2014 Stainless Steel and Beyond<\/h2>\n

The EP steel worm gear<\/strong> series covers the full spectrum of metal and polymer worm gear materials in a single product family. Understanding the material hierarchy helps engineering and procurement teams match the correct worm gear material to each application’s combination of load, speed, environment, and regulatory requirements without the cost of over-specifying a premium material where a standard grade would perform equally well.<\/p>\n

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Stainless Steel \u2014 Corrosion-Critical Environments<\/h3>\n

Austenitic grades (304, 316) for maximum corrosion resistance in food, pharmaceutical, and marine environments; martensitic grades (420, 440C) for higher hardness in the 50\u201358 HRC range where both wear resistance and corrosion protection are required. The stainless steel worm gear is the standard material for regulated food processing and pharmaceutical drives globally.<\/p>\n<\/div>\n

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Carbon Steel \u2014 Maximum Load Capacity<\/h3>\n

Carburized and quenched low-alloy carbon steel (20CrMnTi equivalent) achieves case hardness of 55\u201360 HRC over a tough core \u2014 the highest available fatigue life for a given tooth module. Carbon steel worm gear sets are specified for industrial gearboxes, CNC machine tool drives, and heavy-duty actuators where load capacity is the primary specification and the environment does not present corrosion risk requiring a stainless grade.<\/p>\n<\/div>\n

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Brass and Bronze \u2014 Precision Instrument Drives<\/h3>\n

Brass and phosphor bronze worm wheels against hardened steel worm screws represent the traditional precision instrument worm drive pairing \u2014 low friction, excellent machinability at small module sizes, and natural corrosion resistance without coating. A metal worm gear set in this material combination is specified for telescope drives, scientific instruments, and camera positioning mechanisms where lubricant-free or low-lubricant operation is required.<\/p>\n<\/div>\n

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Polymer Options \u2014 Lightweight and Lubricant-Free<\/h3>\n

Nylon, PA66, POM (Delrin), PEEK, and MSM polymer worm wheels provide lubricant-free mesh operation, significant weight reduction, and corrosion immunity for light-to-moderate duty drives. A plastic worm gear or nylon worm gear against a steel worm screw is specified in office automation, medical device sub-assemblies, and agricultural actuators where lubricant contamination risk or corrosion immunity outweigh the load capacity limitation of polymer materials relative to metal worm gear alternatives.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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How a Steel Worm Gear Works \u2014 Mechanism and Design Considerations<\/h2>\n

The purpose of a worm gear is to transmit torque between two shafts at 90\u00b0 to each other while achieving a high speed reduction ratio in a single, compact gear stage. In the EP steel worm gear<\/strong> set, the worm screw \u2014 a precision-hobbed and ground helical thread \u2014 drives the worm wheel by pushing against the tooth flanks under a predominantly sliding contact at the 20\u00b0 pressure angle. The thread advances the worm wheel by exactly one tooth pitch per worm revolution: a worm wheel with 30 teeth produces a 30:1 reduction from a single-start worm, allowing significant speed reduction and torque multiplication in a package that no spur or helical gear stage can match at equivalent tooth pitch diameter.<\/p>\n

A practical question that arises when specifying a worm drive is: can a worm gear go both directions? The answer is yes \u2014 the worm can drive the wheel in either direction of rotation depending on the worm thread hand (Left or Right, both available in the EP series) and the motor rotation direction. What limits directionality in some worm gear configurations is the self-locking property at low lead angles: when the worm’s helix angle is below the arctangent of the mesh friction coefficient, back-driving of the worm by the wheel load is prevented \u2014 the drive is irreversible. The EP series specifies both L (Left) and R (Right) twisting directions across all module ranges, supporting bidirectional drive configurations in conveyor reversing systems, crane hoists, and CNC axis drives where motor reversal is a standard operating mode.<\/p>\n

The 20\u00b0 pressure angle used throughout the EP steel worm gear<\/strong> series is the standard for industrial worm gear drives, providing a balance between tooth strength and axial thrust at the worm bearings. The sliding contact at the worm mesh generates significant heat under sustained high-load operation \u2014 which is why proper lubrication with EP (extreme pressure) gear oil is essential for the metal worm gear configuration, and why the polymer variants in the series (nylon worm gear, plastic worm wheel) provide an inherent advantage in low-to-moderate duty applications where lubricant elimination is a priority. What are the disadvantages of worm gears? The main disadvantages are lower efficiency than helical or spur gear stages at equivalent ratios (typically 60\u201385% for a single-start worm vs 95%+ for helical), and heat generation under high-duty continuous operation that must be managed through oil bath lubrication or thermal derating of the continuous torque rating.<\/p>\n<\/div>\n

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Application Scenarios \u2014 Where Steel Worm Gears Are Specified<\/h2>\n

The EP steel worm gear<\/strong> series covers the full range of applications where a right-angle drive, high reduction ratio, and metal construction are required simultaneously. The sectors below define the primary markets served by the EP series globally.<\/p>\n

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CNC Machine Tool Axes and Rotary Tables<\/h3>\n

CNC machining centre rotary tables, 4th\/5th axis units, and tilting rotary tables use steel worm gear reducers for their combination of compact right-angle drive, high gear reduction ratio, and self-locking position hold when the servo is de-energised. A carburized and quenched steel worm gear<\/strong> at 55\u201360 HRC provides the surface fatigue life needed for continuous CNC duty at 500\u20131,500 RPM worm input speeds in machine tool factories across Germany, Japan, South Korea, and Canada.<\/p>\n<\/div>\n

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Food Processing and Pharmaceutical Lines<\/h3>\n

Conveyor drives, filling head actuators, capping mechanisms, and mixing tank agitators in food processing and pharmaceutical production specify stainless steel worm gears (304 or 316 grade) for their corrosion resistance to cleaning agents, sanitisers, and process fluids. The stainless worm gear eliminates the coating failure risk that makes carbon steel drives unsuitable in washdown production environments in the UK, Germany, and Australia regulated under EU food equipment standards and FDA 21 CFR requirements.<\/p>\n<\/div>\n

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Industrial Stainless Steel Gear Reducers<\/h3>\n

Chemical plant process valve actuators, wastewater treatment equipment, and offshore platform drives specify stainless steel gear reducer configurations using the EP series metal worm gear for their resistance to H\u2082S, chloride environments, and process chemical exposure. The stainless worm gear in 316L grade provides adequate pitting resistance in chloride-bearing environments encountered in coastal industrial facilities in Canada, Australia, and South Korea where carbon steel reducer housings would corrode within a single maintenance interval.<\/p>\n<\/div>\n

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Crane Hoists and Material Handling<\/h3>\n

Overhead crane end-truck drives, hoist drum gearboxes, and conveyor head shaft reducers use carbon steel worm gear sets at 55\u201360 HRC for their load capacity, self-locking braking effect under load, and compact right-angle housing geometry. The self-locking property of a low-lead-angle steel worm gear<\/strong> prevents the load from back-driving the motor when power is removed, providing an intrinsic load-holding brake function without an additional mechanical brake in many hoist configurations.<\/p>\n<\/div>\n

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Agricultural and Outdoor Machinery<\/h3>\n

Seed drill actuators, irrigation valve positioners, and implement direction change gearboxes use steel worm gear<\/strong> sets for their right-angle drive compactness and self-locking position hold in outdoor field conditions. In agricultural equipment operating in Canada, Brazil, and Australia, the metal worm gear provides the structural durability and load capacity that polymer alternatives cannot match in high-torque implement drive positions, while the stainless grade extends service life in wet-field and fertiliser-spray environments without rust-related seizure.<\/p>\n<\/div>\n

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Marine and Offshore Equipment<\/h3>\n

Deck machinery drives, stabiliser fin actuators, windlass gearboxes, and navigation instrument positioners on vessels and offshore platforms specify stainless worm gear sets for their resistance to continuous salt spray, immersion, and marine atmospheric corrosion. A stainless steel worm gear in 316 grade maintains its dimensional accuracy and mesh quality over multi-year service intervals in marine environments where any form of uncoated carbon steel drive would require quarterly replacement in harsh saltwater operating conditions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Related Products \u2014 Complete Drive System from One Source<\/h2>\n

Beyond the EP steel worm gear<\/strong> series, we produce the complementary drive components that complete a full drive train specification \u2014 all manufactured under the same ISO-certified quality system and available from a single supplier.<\/p>\n

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\u041f\u043e\u0434\u0432\u0456\u0439\u043d\u0430 \u043a\u043e\u0441\u043e\u0437\u0443\u0431\u0430 \u0448\u0435\u0441\u0442\u0435\u0440\u043d\u044f<\/a><\/h3>\n

In multi-stage drive trains where a steel worm gear<\/strong> stage handles the final right-angle reduction, a double helical gear is commonly used upstream at the motor output to provide an efficient first-stage speed reduction. The opposing helix angles of the double helical gear cancel axial thrust, keeping upstream bearing design simple while delivering the load capacity the motor-adjacent stage requires. Our double helical gear series is dimensionally compatible with the EP worm drive portfolio, enabling single-supplier procurement for the full drive chain from motor output to load shaft.<\/p>\n

\"double<\/div>\n<\/div>\n
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Gear Rack \u2014 Full Series<\/a><\/h3>\n

Where the rotary output of a steel worm gear<\/strong> reducer drives a linear axis \u2014 as in a CNC gantry, a robotic linear slide, or a precision positioning table \u2014 our gear rack series provides the matching pinion-to-rack interface at the output. Metric module steel and stainless steel racks are available across module sizes compatible with the pinion spur gear on the worm wheel output shaft, supporting single-source procurement for both the right-angle worm reduction stage and the linear output drive in CNC and automation machine builds.<\/p>\n

\"gear<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

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Order and Trade Information<\/h2>\n
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Minimum Order Quantity<\/h3>\n

Standard steel worm gear sets carry a baseline MOQ. Mixed configurations \u2014 different module sizes, material grades, bore types, and tooth counts \u2014 can be combined into a single order totalling approximately USD 1,500. For new programme evaluation, 1\u20135 pcs samples are available at sample pricing. Very small orders of 1\u20132 pcs for urgent spare or prototype requirements can be assessed individually, with per-unit cost higher at sub-baseline quantities.<\/p>\n<\/div>\n

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Lead Time<\/h3>\n

Standard catalogued steel worm gear configurations: 10\u201325 working days. Standard parts with bore modification or keyway machining: 15\u201335 working days. Custom OEM configurations from customer drawing: 20\u201345 working days. High-precision ground or heat-treated configurations: 30\u201360 working days. Sample and test-piece orders (1\u20135 pcs): 7\u201325 working days, with complex configurations assessed individually before production release.<\/p>\n<\/div>\n

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Incoterms and Payment<\/h3>\n

Standard component orders: EXW, FOB, CIF, and DAP available. Samples and urgent spare parts: EXW \/ FCA \/ DAP \/ courier service. FCA, CFR, CPT, CIP, and DDP negotiable for established procurement programmes or specific import markets. Payment: T\/T (bank transfer) and L\/C (letter of credit) both accepted. Packing: Wooden Case \/ Container and pallet, or made-to-order packaging for precision or sensitive configurations.<\/p>\n<\/div>\n

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OEM \/ Custom Programme<\/h3>\n

Full OEM and custom steel worm gear production from customer engineering drawings, DXF\/DWG files, or physical samples for reverse engineering. MOQ for custom configurations depends on material grade, heat treatment process, bore type, tooth count, and module. Drawing approval precedes production release. Full dimensional and material certification documentation is provided at delivery, with heat treatment certificates available on request for regulated supply chain programmes.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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With more than ten years of focused experience in precision mechanical power transmission, our production facility designs and manufactures a comprehensive range of industrial drive components under a single ISO 9001:2015 certified quality management framework. Our manufacturing portfolio covers agricultural gearboxes, worm gear reducers, planetary drive systems, power take-off shafts, hydraulic cylinders, drive chains, gears of all types, and industrial motors \u2014 all developed in-house with full dimensional traceability.<\/p>\n

Structural manufacturing capabilities cover ductile iron, grey cast iron, cast steel, precision cast steel, and cast aluminium for gearbox housings, large gear blanks, and custom assemblies. Our component range includes gears, sprockets, worm gears, pulleys, shafts, worms, and a full spectrum of standard and non-standard mechanical parts. For the EP steel worm gear<\/strong> series, we operate CNC gear hobbing, worm grinding, and heat treatment equipment covering the full module and bore range documented in the specification table, including all four heat treatment processes: Quenching and Tempering, Carburizing and Quenching, High-frequency Hardening, and Carbonitriding.<\/p>\n

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\nWhat makes a stainless steel worm gear the best choice for CNC machinery or food processing drive systems in Germany or Australia where corrosion resistance is a primary requirement?<\/summary>\n
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A stainless steel worm gear is specified for CNC machinery and food processing drives in Germany and Australia primarily because it eliminates the corrosion and coating failure modes that limit carbon steel worm gear service life in these environments. Austenitic stainless (304 or 316 grade) forms a passive Cr\u2082O\u2083 oxide layer that resists cleaning agents, sanitisers, and process moisture without requiring external coatings \u2014 coatings that can develop thickness variations affecting gear mesh backlash over time. In food processing and pharmaceutical applications regulated under EU standards or Australian food equipment requirements, the stainless worm gear is often mandated by the regulatory framework rather than merely preferred. For CNC machine tools in precision machining environments, stainless grades also resist the coolant-mist corrosion that attacks unprotected carbon steel gear sets in enclosed machining centres.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

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\nWhat is the purpose of a steel worm gear in a worm drive reducer, and what are its main advantages over spur or helical gear stages for industrial applications in Canada or Japan?<\/summary>\n
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The purpose of a steel worm gear in an industrial worm drive is to achieve a high speed reduction ratio \u2014 typically 5:1 to 70:1 \u2014 between two 90\u00b0-crossed shafts in a single, compact gear stage, while providing an inherent self-locking function at low lead angles that prevents back-driving of the worm by the load when the motor is de-energised. Compared to spur or helical gear stages, the steel worm gear’s main advantages for industrial applications in Canada or Japan are its significantly smaller physical footprint at equivalent reduction ratio, the right-angle shaft arrangement it enables without bevel gears, and the load-holding brake effect that eliminates the need for a separate holding brake in hoist, actuator, and positioning drive applications. The trade-off is lower efficiency (typically 60\u201385% vs 92\u201396% for helical), which must be factored into motor sizing when specifying a worm drive reducer for continuous high-duty applications.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

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\nCan a worm gear go both directions, and how does the EP steel worm gear series support bidirectional drive in CNC and automation applications in the UK or South Korea?<\/summary>\n
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Yes \u2014 a worm gear can drive in both rotational directions. The direction of output rotation is determined by the worm thread hand (Left or Right, both available in the EP series across Module 1.0 through 3.0) and the motor rotation direction. The EP steel worm gear<\/strong> series specifies both L (Left) and R (Right) twisting directions for every module range, allowing machine designers to select the correct hand for their shaft layout without modifying the gear set. In CNC and automation applications in the UK and South Korea where conveyor reversing, robotic joint cycling, and servo-driven positioning axis reversal are standard operating modes, the bidirectional capability of the steel worm gear is a baseline requirement rather than a special configuration. The self-locking property that prevents back-driving applies to both directions equally at low lead angles, making the worm gear effective as a holding brake in both rotation states.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

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\nWhat heat treatment should I specify for a steel worm gear used in a heavy-duty industrial gear reducer or crane hoist drive in a manufacturing facility in Canada or Germany?<\/summary>\n
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For heavy-duty industrial gear reducer or crane hoist drive applications in Canada or Germany, Carburizing and Quenching is the standard heat treatment recommendation for the carbon steel worm screw in the EP series. Carburizing produces a hard case (55\u201360 HRC at the surface) over a tough low-carbon core, giving the worm thread the wear resistance and fatigue life needed for sustained high-torque duty while the core toughness absorbs shock loads without brittle fracture \u2014 a combination that through-hardening alone cannot achieve. For the worm wheel, a phosphor bronze or cast iron wheel running against the carburized steel worm screw is the standard industrial configuration; the softer wheel material conforms under initial break-in loading while the hard worm maintains dimensional accuracy at the tooth flanks. Quenching and Tempering is an alternative for applications where through-hardness uniformity is prioritised over case depth, typically in lighter-duty industrial reducer applications.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

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\nWhere can I source a reliable stainless steel worm gear supplier with ISO certification and full bore machining capability for OEM CNC machine tool or pharmaceutical equipment programmes in Japan or Australia?<\/summary>\n
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For OEM CNC machine tool or pharmaceutical equipment programmes in Japan or Australia requiring stainless steel worm gears with full bore machining (finished bore, keyway, and tap), the supplier qualifications to confirm are: ISO quality certification (ISO9001:2008 as a minimum for industrial supply chains; ISO9001:2015 for the broader quality system), demonstrated CNC worm hobbing and grinding capability in stainless steel grades, and availability of material certificates for the stainless grade specified (304, 316, or 316L depending on the corrosion exposure). Our EP series covers stainless steel worm gear production across Module 1.0 to 3.0 (and above on request) with finished bore, pilot bore, and keyway+tap bore configurations, processed under ISO9001:2008 and delivered with dimensional inspection documentation. Sample orders of 1\u20135 pcs are available for incoming inspection and fit verification before volume production commitment, with lead times of 7\u201325 working days for sample quantities.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n

\u0420\u0435\u0434\u0430\u043a\u0442\u043e\u0440: PXY<\/p>","protected":false},"excerpt":{"rendered":"

The EP-Stainless Steel Worm Gear series is engineered for high-precision CNC machinery, offering superior corrosion resistance and durability. Available in modules from 1.0 to 3.0, these gears support tooth counts ranging from 15 to 100, with bore diameters scaling from 6mm to 60mm (AH7 tolerance). Key models include the Module 1.0 (20T) with a 17mm pitch diameter and the robust Module 2.5 (40-60T) featuring a 20mm face width. Manufactured from premium Stainless Steel, they undergo advanced heat treatments like quenching & tempering to achieve a hardness of 55-60 HRC. With a standard 20\u00b0 pressure angle and options for left\/right hand twisting, these gears ensure smooth, backlash-free transmission.<\/p>","protected":false},"featured_media":2020,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[71],"product_tag":[],"class_list":["post-2019","product","type-product","status-publish","has-post-thumbnail","product_cat-worm-gear","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/product\/2019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/media\/2020"}],"wp:attachment":[{"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/media?parent=2019"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/product_brand?post=2019"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/product_cat?post=2019"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/uk\/wp-json\/wp\/v2\/product_tag?post=2019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}