RcThjia 0.8M Hardened Steel Pinion Gear Set 14T-22T with Hex Key for RC Motors

The RcThjia 0.8M Hardened Steel Pinion Gear Set includes five pinion gears with 14, 16, 18, 20, and 22 teeth, plus a hardened hex key. Designed for RC brushless and brushed motors with a 1/8 inch (3.175mm) shaft, these gears are made from hardened steel for long-lasting performance. The set is compatible with 0.8 metric pitch spur gears, making it suitable for a wide range of RC cars.

What's in the Box

• 5 pinion gears: 14T, 16T, 18T, 20T, 22T
• 1 hardened hex key

Gear Teeth and Pitch Compatibility

All gears in this set have a 0.8 module (0.8M) pitch. The pitch must match your spur gear's pitch for proper meshing. The number of teeth (14T to 22T) lets you adjust gear ratios for different speeds and torque levels. A lower tooth count (14T) gives more torque but less top speed, while a higher count (22T) increases speed but reduces torque.

Motor Shaft Requirements

These pinion gears fit motor shafts with a diameter of 1/8 inch (3.175mm). Before installing, measure your motor shaft to ensure it matches this size. The gears have a set screw for secure attachment; use the included hex key to tighten them.

Specifications at a Glance

Common Questions About This Pinion Gear Set

Are these pinion gears compatible with 0.8M spur gears?

Yes, they are designed for 0.8 metric pitch spur gears. Always verify that the spur gear also uses 0.8M pitch to avoid mismatched teeth.

What motor shaft size do they fit?

The gears have a 1/8 inch (3.175mm) hole, so they fit motors with that shaft diameter. Do not use them on larger or smaller shafts.

How do I choose the right gear ratio?

Combine one of the pinion gears with your spur gear. The ratio is spur gear teeth divided by pinion gear teeth. A lower ratio (e.g., 4:1) gives higher speed, while a higher ratio (e.g., 8:1) gives more torque. Experiment with the five options to suit your driving style.