Three Pack 36T Helical Planetary Gears For Electric Bike Motors, 38.5 By 11 Millimeter Size With 608 Bearings, High Precision Nylon Steel Copper Components, Durable Upgrade For Hub Motors
✔️ 3 gears in Nylon, Steel, Copper+Plastic with 608 bearing fit
These planetary gears are designed for e-bike hub motors and folding e-bikes, delivering smoother torque transfer thanks to the 36 oblique teeth. They’re available in Nylon 38.5x10mm, Steel 38x11mm, Steel+Plastic 38.5x11mm, and Copper+Plastic 38.5x11mm variants to match different hubs and bearing setups.
✅ Contains 3 planetary gears designed for e-bike hub motor use; 36T profile across multiple material finishes
✅ 36 oblique teeth improve gear meshing for smoother transmission and reduced vibration
✅ Designed for 7.94mm bearing seat and widely-used 608 bearings for proper alignment
✅ Lightweight design at ~21g per gear lowers rotating mass and boosts throttle response
✅ Size variants: Nylon 38.5x10mm; Steel 38x11mm (Hole Dia 8mm); Steel+Plastic 38.5x11mm; Copper+Plastic 38.5x11mm
💡 What is a sealed bearing planetary gear set used for in e-bike hub drives?
In plain terms, it helps transfer power smoothly while keeping gears aligned under load.
- Improved torque transfer and reduced drivetrain vibration
- Ensure proper seating for commonly used 608 bearings
- Designed for lightweight performance with low rotating mass
- Works with nylon, steel, copper-plastic variants for hub compatibility