775 DC Spindle Motor 12V High Torque Ball Bearing for Mini CNC

The 775-12V is a 775 DC spindle motor built for mini CNC routers, engraving machines, and DIY power-tool projects. It runs on a 12V DC supply and draws about 1.5A with no load, while the 42 mm diameter body and 5 mm output shaft fit standard spindle mounts and collet adapters. The motor uses dual ball bearings and an integrated cooling fan, which supports high-speed operation and helps keep the windings within a safe temperature range during longer cutting or milling sessions. Its high torque output makes it suitable for light machining of wood, acrylic, and soft metals, and the 775 spindle motor format is one of the most widely supported sizes in the DIY CNC community. The front shaft measures 17 mm in length, the motor body is 67 mm long without the shaft, and the overall length with the shaft is about 88.5 mm. Mounting is by M4 screws on a 29 mm hole pitch, and the motor weighs approximately 350 g. Because output speed depends on input voltage, a 12V supply produces a lower speed than a 24V supply, so the same high torque DC motor can be tuned to the material and bit being used. This 12V DC spindle is a practical choice for small CNC builds, PCB drilling, and workshop DIY equipment.

1. Mini CNC routers and engraving machines for wood, acrylic, and PCB work.
2. DIY drilling and milling setups that use a 775 spindle motor mount.
3. Small lathe and rotary-tool conversions requiring a high torque DC motor.
4. Model-making, carving, and workshop projects with variable-voltage speed control.
5. Educational and hobbyist CNC builds that need a 12V DC spindle.
6. Light-duty cutting and grinding attachments where a ball bearing DC motor is preferred.

1. Model: 775-12V.
2. Motor type: brushed DC spindle motor.
3. Rated voltage: 12V DC (the 775 platform is also commonly run at 24V; source page lists 12V).
4. No-load current: 1.5A.
5. No-load speed: 12V 10000 RPM (source page also states a 3000–7600 RPM range in the English description; the two figures are not consistent).
6. Bearing type: dual ball bearing.
7. Cooling: built-in cooling fan.
8. Body diameter: 42 mm.
9. Motor length without shaft: 67 mm.
10. Overall length with shaft: 88.5 mm.
11. Output shaft length: 17 mm.
12. Shaft diameter: 5 mm.
13. Motor step height: 4.5 mm.
14. Motor step diameter: 17.5 mm.
15. Motor tail height: about 5 mm.
16. Motor tail out-of-shaft length: about 5–6 mm.
17. Mounting hole pitch: about 29 mm.
18. Mounting screw: M4.
19. Weight: 350 g.