Plastic Spur, Helical & Custom Machined Gears for Industrial Power Transmission

Plastic Spur, Helical & Custom Machined Gears for Industrial Power Transmission

Kaybin manufactures plastic gears, nylon gears and acetal gears for industrial and OEM machinery where quiet running, corrosion resistance, weight reduction and controlled backlash are required. We supply custom machined plastic gears and OEM replacement gears for industrial applications only — not hobby, RC or consumer-grade gears.

Gear Types Manufactured

Spur Gears (Plastic Spur Gears)
Straight-tooth involute gears for parallel shafts, commonly used in conveyors, packaging machinery, indexing systems and general industrial transmission assemblies.

Helical Gears (Plastic Helical Gears)
Angled-tooth gears for smoother meshing and reduced noise, often used where higher speed and more stable engagement are required.

Bevel Gears
Used for torque transmission between intersecting shafts. Geometry and material are reviewed per duty and mounting configuration.

Worm Gears
Low-speed, high-reduction configurations where sliding contact is acceptable and material selection is matched to wear and heat behaviour.

Rack & Pinion (Gear Racks & Pinions)
Linear motion conversion systems for automation, positioning assemblies and mechanical guidance systems.

Custom gear geometry can be manufactured to drawing or reverse-engineered from  samples to match legacy and discontinued OEM components.

Material Options (Engineering Thermoplastic Gears)

Nylon Gears (PA6 / PA66)

• Tough and impact resistant
• Good fatigue strength for industrial duty
• Moisture absorption can cause dimensional shift — considered during tolerance review

Glass-Filled Nylon Gears

• Higher stiffness and improved dimensional stability
• Reduced creep vs unfilled nylon
• Higher load capability where impact conditions are moderate

Acetal / POM / Delrin Gears

• High dimensional stability and low moisture absorption
• Suitable for precision gears and backlash-sensitive assemblies
• Good wear performance in many dry-running applications

Acetal Copolymer Gears

• Alternative POM grades may improve stability and chemical resistance in some environments

PTFE-Filled Materials

• Lower friction and improved wear behaviour in selected sliding conditions

Polyurethane Gears (Conditional)

• Shock damping and resilience where noise control matters more than tight tolerances

UHMW & Other Thermoplastics

• Wear resistance in low-load sliding systems where friction reduction is a priority

Material is selected based on torque, speed, duty cycle, temperature exposure, lubrication strategy and operating environment.

Technical Design Parameters (Engineering Inputs)

To specify plastic gears correctly, provide the following where available:

• Module or Diametral Pitch (DP)
• Pressure angle (commonly 20° unless specified)
• Number of teeth
• Pitch diameter
• Face width
• Gear ratio and centre distance