Screwdriver Motor Gear (13-Tooth, D10.5*d3)

Spur Steel Gear 13 Teeth, Module 0.7M (OD 10.3–10.5 mm, H 5 mm, Bore 3/4/5 mm)

Cylindrical spur gear (drive pinion) made of high-strength carbon steel with a 0.7M tooth module and 13 teeth is designed for torque transmission in small-sized gearboxes, electric drives, servomechanisms, and precision mechanics. The standard involute tooth profile with a 20° pressure angle ensures smooth engagement with mating gears of module 0.7 without jamming or excessive backlash. Due to the high hardness of carbon steel, this gear significantly exceeds the service life of standard plastic or brass counterparts when operating under load and at high speeds.

Key Advantages and Features:

• High-Strength Carbon Steel: Resistant to abrasion, impact loads, chipping, and tooth stripping during sudden starts or gearbox output shaft locking.
• Precise Tooth Geometry (Module 0.7 / 13T): Machining of the gear rim with a 20° profile angle guarantees minimal radial runout and quiet operation.
• Universal Bore Options: Available with internal diameters of 3 mm, 4 mm, or 5 mm for press-fit mounting onto micro-motor shafts.
• Compact Dimensions: Outer diameter of 10.3–10.5 mm and height of 5 mm allow installation in enclosed gearbox units with limited internal space.

Compatibility and Applications:

Used for replacing worn gears and designing mechanical transmissions with module 0.7:

• Household Appliances and Electronics: Gearboxes for food processors, meat grinders, bread makers, coffee machines, automatic dispensers, CD/DVD tray drives, and office equipment.
• Power Tools and Garden Equipment: Small cordless screwdrivers, engravers, electric pruners, and auxiliary drives.
• Radio-Controlled (RC) Models and Robotics: Motor pinions for 1:18 / 1:16 / 1:14 scale RC cars, servos, stepper motors, and actuators.
• DIY Projects and 3D Printing: Extruder feeding mechanisms, entry-level CNC machines, and engineering prototypes.

Technical Specifications:

Package Contents:

1. Spur Steel Gear 13T 0.7M — 1 pc.

Pro Tip: To ensure your old gear's module matches, use the formula: Module (M) = Outer Diameter (OD) / (Number of Teeth + 2). For this part: 10.5 / (13 + 2) = 0.7. Before press-fitting the gear onto the motor shaft, be sure to provide support on the opposite side of the armature axis to avoid damaging the motor's internal bearings or brush holder. If the shaft fit has a n