Engrenages droits en plastique EP
The EP-Plastic Spur Gears series offers versatile, lightweight transmission solutions engineered for precision and durability. Available in modules ranging from M0.1 to M2.0, these gears are manufactured from high-performance Polyacetal (POM/Delrin 500P) or flexible Nylon, ensuring low friction and wear resistance. The series supports a wide range of customization, with outer diameters spanning 2.0 mm to 100.0 mm and face widths from 2.0 mm to 10.0 mm. Bore options include standard sizes like 1.40 mm, 1.90 mm, 2.05 mm, 2.40 mm, 2.55 mm, 2.90 mm, and flexible 3.05 mm. Specific models, such as the M0.7 24T(LH) + 52T(RH) combination, demonstrate the capability for complex left/right hand configurations with minimal weight (e.g., 6.47g/pcs). Ideal for robotics, consumer electronics, and light machinery, these plastic spur gears provide reliable, quiet operation and corrosion resistance in diverse mechanical drive systems.
POWER TRANSMISSION COMPONENTS
Engrenages droits en plastique EP
Conçu avec précision plastic spur gear solutions — lightweight, corrosion-resistant, and optimized for quiet, efficient power transmission across industrial, automation, and mechanical drive applications worldwide.
Spécifications techniques
Full EP-Plastic Spur Gear series parameter reference. Custom bore, face width, and module configurations available on request.
| Paramètre | Plastic Spur Gear (Standard) | M0.7 Set (24T LH + 52T RH) | Custom Configuration |
|---|---|---|---|
| Taper | Plastic Spur Gear | Plastic Spur Gear Set | Per drawing / requirement |
| Matériel | Polyacetal (POM) / Nylon | Delrin 500P | POM / PA6 / PA66 / custom |
| Gamme de modules | M0.1 – M2.0 | M0.7 | Flexible (consult engineering) |
| No. of Teeth | Configurable | 24T (LH) + 52T (RH) | Per specification |
| Bore (Ø) | Ø1.40 / 1.90 / 2.05 / 2.40 / 2.55 / 2.90 / 3.05 mm | Per set configuration | Flexible |
| Outer Diameter (Ø) | Ø2.0 mm – Ø100.0 mm | Per tooth count × module | Flexible |
| Face Width (L) | 2.0 mm – 10.0 mm | Per configuration | Flexible |
| Poids | Varies by size | 6.47 g / pcs (set avg.) | Calculated per design |
| Profil dentaire | Involute, 20° pressure angle | Involute, 20° pressure angle | Standard / custom |
| Accuracy Class | JIS B 1702 / DIN 3962 | JIS B 1702 | As specified |
| Norme de qualité | Certifié ISO 9001:2015 | Certifié ISO 9001:2015 | Certifié ISO 9001:2015 |
What Is a Plastic Spur Gear?
UN plastic spur gear is a straight-tooth cylindrical gear manufactured from engineering polymers such as Polyacetal (POM) or Nylon, rather than conventional metals. The teeth are arranged parallel to the gear's rotational axis, making the plastic spur gear one of the most geometrically straightforward gear forms in mechanical design. This simplicity translates directly into predictable load distribution, ease of meshing, and consistent torque transfer — characteristics that have kept the straight spur gear at the heart of countless drive systems for well over a century.
Our EP-Plastic Spur Gears cover a module range of M0.1 to M2.0, with outer diameters spanning Ø2.0 mm to Ø100.0 mm and face widths from 2.0 mm to 10.0 mm (flexible on request). Bore options include Ø1.40 mm, Ø1.90 mm, Ø2.05 mm, Ø2.40 mm, Ø2.55 mm, Ø2.90 mm, and Ø3.05 mm, with flexible bore sizing available for custom requirements. Whether you need small plastic spur gears for miniaturised actuators or larger-diameter gears for mid-range load applications, the EP series offers a documented, traceable specification for every configuration.
Precision involute tooth profiles ensure smooth engagement at every mesh point, reducing vibration and acoustic output compared to coarser or less accurately formed alternatives. The result is a plastic spur gear that performs reliably in environments where noise, weight, and chemical resistance are primary engineering concerns — from medical device assemblies to agricultural automation equipment.
Five Key Advantages of EP-Plastic Spur Gears
① Self-Lubricating, Low Friction
Polyacetal (POM) and Nylon formulations carry inherent lubricating properties. In many plastic spur gear applications, external lubricant is unnecessary, cutting maintenance intervals and preventing contamination in food-grade or cleanroom environments.
② Superior Corrosion & Chemical Resistance
Unlike steel spur gears or stainless steel spur gears, engineered polymer gears resist moisture, mild acids, alkalis, and a wide range of industrial solvents — making them the preferred choice in wet, humid, or chemically aggressive operating environments.
③ Significant Weight Reduction
Engineering polymers weigh 30–50 % less than equivalent aluminum spur gears and up to 80 % less than steel alternatives. Lower rotating mass reduces inertia loads on motors and drive shafts, improving energy efficiency and enabling faster cycle times in automated systems.
④ Quiet, Vibration-Damped Operation
Polymer elasticity absorbs impact and mesh shock better than rigid metal, producing noticeably lower operating noise. This quality is critical in office automation, precision instruments, and consumer-facing products where acoustic comfort is a design requirement.
⑤ Cost-Efficient High-Volume Production
Polymer gears support injection moulding at scale, dramatically reducing per-unit cost for high-volume runs. For custom spur gears with specific tooth counts, bore patterns, or face widths, our machining capability handles short-run custom plastic spur gears without the high tooling cost of metal alternatives.
Material Guide — What Are Plastic Gears Made Of?
The material selection for a plastic spur gear determines its service life, load rating, and suitability for specific environments. Our EP series offers two primary polymer classes, each with well-documented mechanical properties matched to different application demands.
Polyacetal (POM / Acetal / Delrin)
Notre delrin spur gears et acetal spur gears are machined from Delrin 500P and equivalent POM grades. POM delivers outstanding dimensional stability, stiffness, and fatigue resistance. Its low coefficient of friction makes it ideal for precision drive applications where tight gear-to-shaft tolerances are critical — such as robotics end-effectors, instrument actuators, and light industrial conveyor systems. POM can handle repeated load cycling with minimal creep, a key factor when designing for longer gear life in demanding duty cycles.
Nylon (PA6 / PA66)
Nylon spur gears excel in applications requiring impact absorption and flexibility under load. Nylon's higher elongation-at-break value allows the tooth profile to elastically deform under shock loading and return to its original geometry — significantly reducing the risk of catastrophic tooth fracture. While nylon does absorb slight moisture over time (which must be accounted for in bore-fit design), its toughness advantage over brittle metals in impact-heavy environments makes nylon spur gears the preferred choice for agricultural machinery, packaging automation, and hand-tool drives.
Both material families meet standard industrial quality requirements and are available in metric spur gear tooth profiles conforming to JIS B 1702 and DIN 3962 accuracy classes. For applications requiring glass-filled reinforcement, anti-static grades, or food-contact-compliant polymers, our engineering team will advise on the most appropriate material specification for your design.
How a Plastic Spur Gear Works
Le principe de fonctionnement d'un plastic spur gear is direct and mechanically elegant. Straight involute teeth on two parallel shafts engage one another as the drive shaft rotates, transferring torque from the driving gear (typically a smaller pinion spur gear) to the driven gear. Because all tooth contact occurs simultaneously along the full face width at any given meshing position, the load is distributed evenly, avoiding the helical overhangs that generate axial thrust in helical and spur gear comparisons. This makes the straight spur gear inherently easier to design for, simpler to align, and lower in cost than the helical gear counterpart — an important consideration when designing spur gears for cost-sensitive product lines.
The involute tooth form used across the EP-Plastic Spur Gear series maintains a constant velocity ratio throughout the mesh cycle, which is fundamental to smooth torque transfer. As the driving tooth pushes along the flank of the driven tooth, the contact point traces a straight line — the line of action — at a consistent pressure angle (typically 20°). This controlled geometry is what separates precision-ground or moulded involute spur gear products from rudimentary cast teeth, and it is why professional mechanical designers specify the involute profile as the standard for all metric spur gears in industrial drive trains.
Dans un spur gear set pairing, the gear ratio is determined simply by the ratio of tooth counts: a 24-tooth pinion driving a 52-tooth gear (as in our M0.7 × 24T(LH) + 52T(RH) set) produces a speed reduction of approximately 2.17:1. These integer ratios make the plastic spur gear straightforward to integrate into any differential spur gear or external spur gear stage of a multi-reduction gearbox. When combined with a gear rack, a rotary-to-linear motion conversion is achieved — a configuration commonly used in CNC positioning stages, automated dispensing systems, and linear actuator drives.
Scénarios d'application
The EP-Plastic Spur Gear series is designed to serve a broad spectrum of global industrial and commercial applications. Below are the primary sectors where our plastic spur gear products deliver consistent value.
Office Automation & Printers
Paper transport systems, ink carriage drives, and scanner assemblies rely on small plastic spur gears for quiet, consistent torque delivery. Nylon spur gears are especially popular in this space due to their noise-damping characteristics and resistance to dry environments.
Robotics & Automation
Collaborative robot joints and lightweight actuators benefit from acetal spur gears that reduce the inertia load on servo motors. In pick-and-place automation lines — widely deployed in factories across Canada, Australia, and Southeast Asia — the combination of low weight and dimensional precision makes the plastic spur gear the dominant small-module choice.
Machines agricoles
Seeding controllers, irrigation valve actuators, and implement drive governors frequently use nylon spur gears for their resistance to mud, moisture, and fertiliser chemicals. The straight spur gear tooth form is easily replaced in the field, minimising equipment downtime during critical growing seasons.
Medical Devices & Laboratory Equipment
Infusion pump drives, diagnostic instrument stages, and sample carriage systems specify POM plastic spur gears for their compliance with cleanroom requirements. The self-lubricating property eliminates the risk of oil migration into sample pathways, while the low weight keeps motor loads within strict power budgets.
Consumer Electronics & Appliances
Camera lens barrels, window openers, and domestic appliance timer drives are classic applications for delrin spur gears and small plastic spur gears. The combination of high-cycle durability, corrosion immunity, and the ability to form tight tolerances in thin-wall mouldings makes these gears the standard selection for product designers globally.
Emballage et transformation des aliments
Conveyors, filling heads, and capping drives in food packaging lines demand gears that resist washdown chemicals and comply with food-contact material regulations. Plastic spur gears in food-grade nylon or acetal grades meet these requirements without the additional cost of stainless steel spur gears in every drive position.
Spur Gear vs Helical Gear — Which Should You Choose?
A question that frequently arises when designing spur gears is whether to select a straight-tooth spur gear or its helical counterpart. The difference between spur gear and helical gear performance comes down to the direction of tooth engagement. In a plastic spur gear, all tooth contact happens simultaneously along a line parallel to the shaft axis, creating a momentary impulse load at each mesh. In a helical spur gear, the tooth engagement progresses gradually across the helix angle, distributing the load over a wider contact band and producing smoother torque transfer at higher speeds.
For most applications using plastic spur gears — particularly those below 1,500 RPM and under moderate loads — the straight spur gear offers lower axial force, simpler shaft and bearing design, and lower manufacturing cost. The spur gear and bevel gear or the helical and spur gear combination becomes relevant only when continuous high-speed or high-load conditions demand the extra smoothness that helical geometry provides. In summary: if your system prioritises simplicity, replaceability, and cost, the external spur gear or internal spur gear in plastic remains the most practical selection.
Produits associés — Alimentation complète pour systèmes d'entraînement
Our manufacturing scope extends well beyond the plastic spur gear. To support full drive-system procurement, we supply the following complementary components — each engineered to the same dimensional and material standards as our spur gear line.
Engrenage à double hélice
Where higher load capacity and quieter high-speed operation are required alongside your plastic spur gear stages, our double helical gear series provides exactly that. The opposing helix angles cancel axial thrust, making double helical gears the natural step up from a straight spur gear set in precision machine tool and heavy-duty gearbox design.
Porte-bagages
Pair any pinion spur gear from our EP series with a matching gear rack to convert rotary motion into precision linear displacement. We supply gear racks in steel, stainless steel, and engineering polymer grades, with metric module pitches that mate directly with our full range of plastic spur gears — simplifying bill-of-materials management for your engineering and procurement teams.
Every product in our drive component range ships with dimensional inspection reports on request. Sourcing your plastic spur gears for sale, helical gears, and gear racks from a single supplier reduces lead-time risk, simplifies quality assurance, and ensures inter-component compatibility — a genuine one-stop solution for spur gear sets and complete small-module drive trains.
Order & Trade Information
MOQ
Standard plastic spur gear parts carry a baseline MOQ. Mixed models (different tooth counts, bore sizes, or modules) can be combined to reach approximately USD 1,500 per order. For small-quantity sampling, 1–5 pcs are available at sample pricing for new customers.
Lead Time
Standard stocked plastic spur gears: 3–7 working days. Standard CNC-machined or injection-moulded production runs: 10–25 working days. Custom spur gears (non-standard tooth profile, bore, or material): 20–45 working days. Sample / small-batch test orders: 7–25 working days.
Trade Terms
Standard small component orders: EXW / FOB / CIF / DAP. Urgent spare part shipments: EXW / FCA / DAP / courier service. FCA, CFR, CPT, CIP, and DDP terms are available on request for specific markets.
Sample Policy
New customers may request 1–5 pcs of any plastic spur gear variant at sample pricing for fit, form, and function evaluation. Mixed-module sample orders are accepted. Samples for custom spur gears are evaluated case by case based on drawing complexity and machining requirements.
About Our Manufacturing Capability
With over a decade of specialised experience in mechanical power transmission, our facility designs and produces a comprehensive range of industrial components. Our product portfolio spans agricultural gearboxes, worm gear reducers, planetary gear drives, power take-off shafts, hydraulic cylinders, gears, chains, and drive motors. Production is carried out under an ISO 9001:2015 certified quality management system, ensuring traceable, consistent output at every production stage.
We design and manufacture a wide variety of industrial and agricultural gearboxes and assemblies using materials including ductile iron, cast iron, cast steel, precision cast steel, and cast aluminium. Our component range covers gears, sprockets, worm gears, pulleys, worms, shafts, and both standard and non-standard mechanical parts. For every plastic spur gear we produce — from a small plastic spur gear at M0.1 module to large spur gears at M2.0 — dimensional inspection and material certification documentation are available to support your incoming quality procedures.
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