Spur Gear (3mm) 8 Teeth

The Spur Gear (3mm) 8 Teeth is a small spur gear with 8 straight-cut teeth, listed in the 3 mm size. With so few teeth it works well as a pinion, the small driving gear fitted to a motor shaft, which meshes with a larger gear to reduce speed and increase torque in robots, models and DIY mechanisms.

Spur Gear (3mm) 8 Teeth Specifications

• Gear type: spur gear with straight teeth
• Number of teeth: 8
• Listed size: 3 mm
• Typical role: pinion (driving gear) on a motor shaft
• Quantity: 1 gear

Spur Gear (3mm) 8 Teeth Applications

• Motor pinions for speed-reduction gear trains
• Small robot drives and moving mechanisms
• Repairing gears in toys, models and small devices
• STEM lessons on gear ratios and mechanics

What's in the Box

• 1 × 8-tooth spur gear

Tip: Gears only mesh smoothly when they share the same module (tooth size), so check this before pairing them. The gear ratio is the driven gear's teeth divided by the driving gear's teeth: this 8-tooth pinion driving an 18-tooth gear gives a 2.25:1 reduction, so the output turns slower but with more torque.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.