CNBTR 5PCS Brass Worm Wheels | 40 Teeth | Gear Module: 0.5 | 5mm Bore Diameter | 21mm OD | 12mm Width | Speed Ratio 40: 1

Worm Wheel Model: 10930916 Material: Brass Number of Starts: 1 Speed Ratio: 40 Number of Teeth: 40 Helix Direction: Right Hand Pressure Angle: 2.36° Metric Module Pitch: 0.5 Outside Diameter: 21 mm Overall Thickness: 12 mm Bore Diameter: 5 mm Hub Diameter: 12 mm Hub Projection: 7 mm Bore Type: Plain Gear Type: Worm Set Screw: M4

• 【Brass Gears】Brass gears have low friction and dissipate heat better than cast iron gears to provide a long service life for both the gear and the worm. They’re also more corrosion resistant than cast iron gears
• 【Pitch Module 0.5】 This worm gear pack comes with a wheel and a worm of the same pitch module 0.5. Gears with a module of 0.5 have small, closely spaced teeth that run smoothly and quietly at high speeds
• 【5MM Bore】The worm gears have a 5mm diameter bore to insert a shaft of 5mm diameter
• 【21MM OD/12mm Width】 These worm wheels have a 21mm outside diameter and 12mm width to work with worm gears
• 【Applications】Worms are used with worm wheels to reduce speeds or increase torque in mechanical applications that operate in confined spaces, such as power steering, machine tools, elevators, and chain blocks