EP-WPEDX-O Double Speed Reducer
EP-WPEDX-O Series Double Speed Reducer · 19–450 kg
EP-WPEDX-O Double Speed Reducer
Two cascaded worm gear stages. One integrated housing. The EP-WPEDX-O bộ giảm tốc hai tốc độ delivers gear reduction ratios from 1/200 to 1/900 across a power range of 0.12–5.5 kW — purpose-built for industrial drives that demand ultra-low output speed and sustained high torque in a compact, maintenance-friendly package.
Technical Specifications — EP-WPEDX-O Double Speed Reducer
| Kích cỡ | Input (kW) | Tỷ lệ | MỘT | AB | BA | BB | BC | LÀ | HB | CA | M | N | Output W×Y | Mass (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40–70 | 0.12 | — | 314 | 153 | 40 | 131 | 65 | 75 | 50 | 145 | 156 | 295 | 7×4 | 19 |
| 50–80 | 0.18 | — | 314 | 144 | 50 | 142 | 70 | 83 | 65 | 163 | 175 | 320 | 10×4,5 | 27 |
| 60–100 | 0.37 | — | 387 | 175 | 60 | 169 | 90 | 91 | 75 | 191 | 224 | 375 | 10×4,5 | 45 |
| 70–120 | 0.37 / 0.75 | 1/200 · 1/300 | 425 / 445 | 193 | 70 | 190 | 100 | 109/111 | 90 | 229/231 | 266 | 450 | 12×4,5 | 65 |
| 80–135 | 0.75 / 1.5 | 1/400 · 1/500 | 499 | 226 | 80 | 210 | 110 | 125 | 105 | 260 | 306 | 495 | 16×6 | 98 |
| 100–155 | 1.5 | 1/600 | 570 | 269 | 100 | 252 | 140 | 148 | 130 | 303 | 350 | 590 | 18×7 | 152 |
| 120–175 | 2.2 / 3.0 | 1/800 | 631 | 287 | 120 | 255 | 150 | 181 | 155 | 356 | 394 | 640 | 18×7 | 194 |
| 135–200 | 3.0 / 4.0 | — | 680 | 318 | 135 | 319 | 175 | 202 | 185 | 402 | 440 | 710 | 20×7.5 | 283 |
| 155–250 | 5.5 | — | 815 | 380 | 155 | 385 | 200 | 247 | 203 | 497 | 510 | 860 | 25×9 | 450 |
Dimensions A through N are outer envelope measurements in millimeters. Output shaft keyway is expressed as Width × Height (mm). Actual weight may vary slightly by shaft direction variant and lubricant fill level.
What Is the EP-WPEDX-O Double Speed Reducer?
The EP-WPEDX-O is a two-stage worm gear unit that packages both reduction stages inside a single cast iron housing. The WPEDX variant uses an extended double-shaft horizontal layout, while the paired WPEDO variant offers a vertical single-shaft output — making the WPEDX-O designation the combined series covering both geometric arrangements within the same dimensional family. What sets this product apart from a standard single-worm unit is simple: by running two separate worm meshes in sequence, the EP-WPEDX-O achieves truyền động bánh răng trục vít kép multiplication that a single stage cannot provide, without the added complexity of coupling two separate gearboxes.
Across the nine standard frame sizes — from the compact 40–70 frame at 19 kg through to the heavy 155–250 frame at 450 kg — the EP-WPEDX-O Double Speed Reducer covers an input power band of 0.12 kW to 5.5 kW. This scope makes it suitable both for lightly loaded auxiliary drives on packaging lines and for the primary reduction stage on heavy conveyor systems and industrial agitators. The bộ giảm tốc bánh răng trục vít hai tốc độ designation reflects the fact that speed is reduced twice — once at each worm stage — with torque amplified correspondingly at each pass.
The WPEDX Double Speed Reducer shaft direction system provides three input-output geometric configurations (A, B, C for WPEDX; A through E for WPEDO Double Speed Reducer), giving system engineers meaningful flexibility when fitting the unit into constrained machine envelopes. Available in standard green, and also manufactured as a bộ giảm tốc bánh răng trục vít hai tốc độ màu xanh lam hoặc bộ giảm tốc bánh răng trục vít hai tốc độ màu trắng finish on request for color-coded process environments, the EP-WPEDX-O is ready for global supply to OEM integrators, distributors, and MRO buyers across Australia, the UK, Canada, the Netherlands, South Korea, Brazil, and Colombia.
Five Reasons Engineers Specify the EP-WPEDX-O Double Speed Reducer
Ratios Up to 1/900 in One Unit
Combining two worm stages multiplies the gear reduction ratio of each stage — so a first stage at 1/30 paired with a second at 1/30 yields 1/900 overall. That ratio is simply not achievable with a single worm stage of practical size. The EP-WPEDX-O delivers this in one machined housing, cutting out the intermediate shaft, coupling, and second support frame that a two-separate-gearbox arrangement would require. For engineers designing slow-feed augers, rotary kilns, or wastewater paddle drives in the UK or Canada, this is a meaningful installation cost reduction.
Flexible Shaft Direction Options
The WPEDX geometry supports three shaft direction variants (A, B, C), while the WPEDO configuration within the same product family extends to five orientations (A through E), including a dual-output arrangement. This means a single product catalogue entry — the EP-WPEDX-O — covers the majority of real-world machine layout requirements without custom housing modifications, reducing specification complexity for Nhà cung cấp OEM bộ giảm tốc bánh răng trục vít hai tốc độ relationships globally.
Passive Self-Locking at High Ratios
At the combined ratios available from a double worm reduction gearbox, the worm geometry self-locks when drive is removed — meaning the output shaft holds position without a separate brake. This is exploited in vertical lift mechanisms, inclined belt feeders, and gate valve actuators where position retention on power loss is a safety requirement. It also simplifies the electrical design by eliminating the motor-mounted brake that these applications would otherwise demand.
Scalable Power Range (0.12–5.5 kW)
Nine standard frame sizes span a power range that covers most light industrial drive applications without custom engineering. Procurement teams can select a single product family for multiple machine models within a facility, keeping spare parts, oil service kits, and mounting hardware standardized across the installed base. The worm reducer kit approach — motor, gearbox, and coupling as an assembly — is supported for all frame sizes in this range.
ISO 9001:2015 Quality on Every Shipment
Manufacturing is governed by an ISO 9001:2015 quality management system, with dimensional inspection records, material certificates for housing castings and bronze worm wheels, and load-verified output torque test data issued as standard documentation with each production batch. This level of quality traceability is a specific requirement for equipment qualification in Netherlands, Australian, and South Korean industrial procurement frameworks — and it is included as standard, not as a premium option.
Operating Principle of the Two-Stage Worm Drive
The EP-WPEDX-O functions on a cascaded worm gear principle that is straightforward in concept but precise in execution. A motor shaft couples to the primary input worm — a ground-thread steel shaft whose helical thread engages tangentially with the teeth of the first worm wheel. That worm wheel is keyed to an intermediate shaft, which turns at the first-stage reduced speed. The intermediate shaft in turn carries — or is itself — the second worm screw, driving a second bronze worm wheel mounted on the final output shaft. The two reductions compound: the output speed is divided by the product of both stage ratios, while the output torque is multiplied by the same combined factor (less transmission losses).
This architecture is the defining characteristic of every bộ giảm tốc bánh răng trục vít kép: the intermediate stage is internal to the housing and requires no external shaft coupling, alignment procedure, or additional support bearing arrangement. The housing bore for the intermediate shaft is line-bored in a single machining setup together with the input and output bores, ensuring that all three shaft axes are precisely perpendicular and parallel as required by the worm gear geometry. Any angular deviation between these axes would load the worm wheel teeth asymmetrically, reducing contact area and accelerating surface fatigue — so the single-setup machining is not a production shortcut but a geometric necessity.
Lubrication of both worm meshes is provided by a shared oil bath. As the input worm rotates, it flings oil into the first mesh contact zone; the intermediate worm is partially submerged in the oil reservoir at the housing base, ensuring consistent film supply to the second mesh. The oil fill volume and viscosity grade (ISO VG 220 in standard configurations) are chosen to maintain adequate film thickness at both worm contact zones across the full continuous rated power range of the unit. This shared-bath approach keeps the unit mechanically simple and eliminates the separate oil circuit that some competitive designs require on larger frame sizes.
Double Speed Reducer Materials & Build Quality
Every structural component in the EP-WPEDX-O Double Speed Reducer is selected against the specific demands of worm gear transmission — a gear type whose efficiency and longevity are more material-dependent than almost any other enclosed gear form. The housing is grey cast iron HT200, machined from a solid casting rather than assembled from bolted sections. Grey cast iron at HT200 grade provides the internal graphite flake microstructure that dampens gear-mesh vibration from transmitting into the machine frame — a practical advantage in applications like food packaging lines in the Netherlands or precision indexing drives in South Korean assembly facilities, where vibration in the machine structure can affect sensor accuracy or product quality.
Both worm shafts begin as forgings of 45# carbon steel. Each shaft is individually induction-hardened at the worm thread zone to HRC 45–55, then cylindrically ground to final diameter and thread profile. The hardened case — typically 1.5–2 mm deep — resists the tribological sliding wear mode that is inherent to worm gear operation, where the worm thread slides across the worm wheel tooth face rather than the rolling contact predominant in helical or spur gear pairs. The ground thread surface finish (Ra ≤ 0.8 µm at the worm flanks) minimizes the initial running-in wear that new gear pairs experience and contributes to stable efficiency values from the first hours of operation.
Worm wheels are centrifugally cast in ZCuSn10Pb1 tin-phosphor bronze, hobbed to final tooth profile and bore dimension after casting. The bronze formulation is the established standard for worm wheel applications — its combination of moderate strength, high conformability against the hardened steel worm, and inherently low dry friction coefficient against steel makes it the right material for applications ranging from light-duty nmrv worm reducer scale down to the heavy 155–250 frame of the EP-WPEDX-O Double Speed Reducer.
Bearings are deep-groove ball bearings on smaller frames and tapered roller bearings on larger frames (from 80–135 upward), pre-loaded to control axial float. Oil seals at all shaft exits are double-lip NBR, rated for continuous immersion in ISO VG 220 mineral gear oil at operating temperatures up to 90°C. The dipstick or level plug arrangement on each housing is positioned for the frame's standard mounting orientation, and alternative plug positions are machined for the non-standard shaft direction variants — so worm gear reducer installation does not require any drilling or modification at site.
Where This Double Speed Reducer Is Used
The EP-WPEDX-O bộ giảm tốc hai tốc độ suits any application where output speed below roughly 10 rpm is required from a standard 4-pole or 6-pole motor, and where a single-stage unit cannot deliver the required ratio in a practical size. Here are the six sectors where this unit is most frequently deployed.
Bulk Material Screw Conveyors
Horizontal and inclined screw conveyors moving grain, cement, mineral powder, or woodchip require low-speed, high-torque shaft rotation — typically 5–40 rpm with starting torque two to three times the running torque. The bộ giảm tốc trục vít configuration of the WPEDX-O handles this duty efficiently, and the self-locking characteristic prevents the screw from reversing under load when the motor is de-energized, which is particularly important for inclined conveyor installations in Australian grain handling facilities.
Industrial Mixers & Kneaders
Paddle mixers, sigma-blade kneaders, and planetary mixing heads in chemical and food processing plants operate at 2–15 rpm under sustained high torque loads. A hộp số trục vít đầu ra kép configuration within this series supports dual mixer-shaft arrangements from a single motor-gearbox unit, reducing installed motor count and ensuring synchronized paddle rotation — a common requirement in batch mixing where consistent shear is essential to product quality.
Rotary Kilns & Drum Dryers
Cement pre-heater bypasses, mineral calcination kilns, and rotary drum dryers in Colombia and Brazil typically rotate at 0.5–3 rpm. At these extreme low speeds, the ratio capability of a hộp số trục vít kép is genuinely required. The EP-WPEDX-O Double Speed Reducer at ratio 1/900 can deliver a 1,450 rpm motor output as approximately 1.6 rpm at the kiln drive pinion — within direct range without any additional chain or belt reduction.
Water & Wastewater Treatment
Clarifier sludge scrapers, sedimentation bridge drives, and slow aeration rotor shafts in UK and Canadian water treatment plants run continuously at very low speed with little provision for regular maintenance. The sealed oil bath, robust cast iron construction, and long service interval of the gear worm reducer configuration suit these inaccessible, continuously loaded drive positions well, and the self-locking behavior provides passive safety against accidental rotation during maintenance windows when the motor is isolated.
Agricultural Feed Processing
Grain handling augers, feed pellet cooler rotary valves, and fertilizer spreader drives across Australia and Brazil benefit from the wide power range and the inherent self-locking character of this bộ giảm tốc bánh răng trục vít hai tốc độ series. The flanged motor attachment interface is compatible with IEC 4-pole motors in B3 or B5 mount, and the unit's tolerance of intermittent duty cycles — typical in agricultural seasonal applications — does not require any derating when the application is correctly sized at the mechanical rating.
Valve & Gate Actuators
Sluice gates, penstock drives, and large butterfly valve operators in irrigation infrastructure and flood control systems in the Netherlands and South Korea require reliable torque delivery and positive position hold on power failure. The high-ratio hộp số trục vít giảm tốc kép characteristic of the EP-WPEDX-O meets both requirements: adequate output torque from a small motor, and inherent self-lock preventing gate movement when power is removed — without any supplementary holding brake.
About us - Double Speed Reducer Manufacturer
Ten-plus years of focused investment in mechanical power transmission manufacturing has built a production capability that extends well beyond the single product category of worm gearboxes. Our current range spans agricultural gearboxes, planetary gear drives, power take-off shafts, hydraulic cylinders, drive chains, and motors — all produced under one roof with direct control over material qualification, casting, heat treatment, machining, and assembly quality. This integration is what makes it practical to offer the replacement double speed worm gear reducer documentation that OEM customers and MRO buyers need, since we hold full traceability on every production lot.
The production facility holds ISO 9001:2015 certification across its full manufacturing scope. Housings are cast in ductile iron, grey cast iron, cast steel, precision investment-cast steel, or cast aluminum depending on the product series. Internal manufacturing capabilities include CNC hobbing, broaching, gear grinding, and multi-axis machining centers, allowing us to produce gears, sprockets, worm wheels, pulleys, worm screws, and shafts to both standard catalogue dimensions and fully custom specifications for OEM integrators who require non-standard bore sizes, shaft lengths, or flange patterns not listed in the standard product range.
Xưởng
Products That Work Alongside This Unit
For customers building a complete drivetrain, the two product lines below are selected as natural complements to the EP-WPEDX-O — dimensionally compatible, sourced from the same production system, and supported by the same technical team.
Động cơ điện
IEC-frame three-phase motors in B3, B5, and B14 configurations are available in the 0.12–5.5 kW power range, directly matching the input flange dimensions of the EP-WPEDX-O across all nine frame sizes. Motors are supplied as stand-alone units or as factory-assembled motor-gearbox sets, pre-aligned and load-tested, ready for direct installation. Variable frequency drive (VFD) compatible windings are available for applications requiring adjustable speed above the base gear ratio.
Hộp số trục vít
When a single-stage solution covers the required reduction ratio, our full catalogue of worm gear reducer gearbox units — NMRV, WP, and RV series in solid-shaft and hollow-bore configurations — offers the most compact and economical answer. The nmrv worm reducer line in particular covers the light-duty end of the same ratio range, and the shared bronze/steel material specification means lubrication and service procedures are consistent across your entire installed base of worm gear drives.
Câu hỏi thường gặp
What is the purpose of a gear reducer and why would an engineer in Canada specify a double speed reducer instead of a standard single-stage worm unit?
The purpose of any gear reducer is to trade shaft speed for shaft torque — allowing a compact, high-speed motor to drive a slow, high-force process without needing an oversized, slow-speed motor that would be far more expensive to purchase and operate. An engineer in Canada would specify a bộ giảm tốc hai tốc độ specifically when the required output speed falls below roughly 5–10 rpm and the combined ratio exceeds what a single worm stage can practically deliver — typically 1/60 to 1/80 maximum for a single-stage unit of reasonable size. The dual-stage EP-WPEDX-O extends this to 1/900, covering that gap cleanly.
When is a green double speed worm gear reducer or a blue double speed worm gear reducer available, and does the color affect the technical specification?
Color variants — including the standard green, bộ giảm tốc bánh răng trục vít hai tốc độ màu xanh lam, and bộ giảm tốc bánh răng trục vít hai tốc độ màu trắng — are available as paint finish options applied to the housing exterior after all machining and inspection is complete. The finish has no effect on internal components, dimensional tolerances, gear material, bearing selection, or performance data. These color options are used in color-coded process environments — such as pharmaceutical packaging lines in South Korea where different drive colors indicate different production zones — and are available for all standard frame sizes on request with standard lead times.
What are the main disadvantages of using a double worm reduction gearbox in a high-frequency start-stop application in a Netherlands automated facility?
The core disadvantage of a double worm reduction gearbox in high-frequency start-stop duty is heat accumulation. Each motor start generates a torque spike that drives heat into both worm meshes simultaneously, and in a high-cycle automated facility running multiple starts per minute, the gearbox may reach its thermal steady-state limit well before the mechanical fatigue limit. The solution is to size the unit for its thermal power rating at the duty cycle rather than its peak mechanical rating, or to specify a unit with an external oil cooler or fan-forced housing. Beyond thermal concerns, the sliding-contact nature of worm gear geometry also results in lower mesh efficiency than helical or planetary alternatives — typically 60–85% for each stage — which compounds across both stages of a dual-stage unit.
How do you carry out a correct worm gear reducer installation for the EP-WPEDX-O on a foot-mounted drive arrangement in a Brazilian food processing plant?
Correct worm gear reducer installation for a foot-mounted EP-WPEDX-O in a food processing context starts with confirming the mounting surface is flat and rigid — a flexible or resonant base can impose bending loads on the housing that are not accounted for in the product rating. Coupling alignment between motor and gearbox input shaft should be checked with a dial indicator to within 0.05 mm parallel and 0.1° angular tolerance. Confirm oil fill level through the level plug before first start — the factory oil fill is drained before export on large units for shipping safety. Check the level plug orientation matches the installed mounting position, as the WPEDX-O Double Speed Reducer has multiple pre-machined plug positions for different shaft direction variants.
Biên tập viên: PXY
