Brushless motor C12B-02

DCBLDC7.4 V

Overview
The C12B series are brushless DC motors with an outer diameter of φ12 mm, offered in multiple sub-models covering different lengths and voltage options. Models provide a range of no-load speeds, currents, startup currents and torques, efficiencies and output powers. CAD/external-dimension drawings are available for download. Sample supply and customization options are supported for many sub-models.

Product series - specifications (per sub-model)

• C12B-08 — Length 13.5 mm; Voltage 12 V; Terminal resistance 25.9 Ω; No-load speed 23,200 rpm; No-load current 85 mA; Startup current 463 mA; Startup torque 1.53 mN·m; Max efficiency 32.7%; Max output 0.93 W
• C12B-07 — Length 13.5 mm; Voltage 12 V; Terminal resistance 22.0 Ω; No-load speed 26,100 rpm; No-load current 90 mA; Startup current 545 mA; Startup torque 1.67 mN·m; Max efficiency 35.3%; Max output 1.14 W
• C12B-06 — Length 13.5 mm; Voltage 12 V; Terminal resistance 14.5 Ω; No-load speed 29,900 rpm; No-load current 170 mA; Startup current 828 mA; Startup torque 2.00 mN·m; Max efficiency 29.9%; Max output 1.57 W
• C12B-02 — Length 13.5 mm; Voltage 7.4 V; Terminal resistance 4.8 Ω; No-load speed 26,200 rpm; No-load current 130 mA; Startup current 1,555 mA; Startup torque 3.52 mN·m; Max efficiency 50.5%; Max output 2.42 W
• C12B-01 — Length 13.5 mm; Voltage 4.5 V; Terminal resistance 3.7 Ω; No-load speed 23,000 rpm; No-load current 130 mA; Startup current 1,233 mA; Startup torque 1.84 mN·m; Max efficiency 45.6%; Max output 1.11 W
• C12B-11 — Length 17.5 mm; Voltage 12 V; Terminal resistance 24.7 Ω; No-load speed 14,700 rpm; No-load current 77 mA; Startup current 486 mA; Startup torque 2.68 mN·m; Max efficiency 36.2%; Max output 1.03 W
• C12B-10 — Length 17.5 mm; Voltage 12 V; Terminal resistance 11.2 Ω; No-load speed 20,400 rpm; No-load current 97 mA; Startup current 1,071 mA; Startup torque 4.98 mN·m; Max efficiency 48.9%; Max output 2.66 W
• C12B-09 — Length 17.5 mm; Voltage 12 V; Terminal resistance 5.6 Ω; No-load speed 30,000 rpm; No-load current 140 mA; Startup current 2,139 mA; Startup torque 7.14 mN·m; Max efficiency 55.4%; Max output 5.61 W
• C12B-04 — Length 17.5 mm; Voltage 12 V; Terminal resistance 5.6 Ω; No-load speed 30,500 rpm; No-load current 125 mA; Startup current 2,143 mA; Startup torque 7.14 mN·m; Max efficiency 57.5%; Max output 5.70 W
• C12B-03 — Length 17.5 mm; Voltage 12 V; Terminal resistance 2.8 Ω; No-load speed 28,000 rpm; No-load current 190 mA; Startup current 2,857 mA; Startup torque 6.79 mN·m; Max efficiency 55.1%; Max output 4.98 W

Customizable items

• Lead pin — configurable on many sub-models (e.g. C12B-08, -07, -06, -02, -01, -03, -04, -09, -10, -11)
• Grounding terminal — configurable on many sub-models (see examples above)
• Gear head — optional for selected longer variants (examples: C12B-11, C12B-10, C12B-09, C12B-04, C12B-03)
• Ball bearing — offered on certain variants where indicated

Notes
Listed data per sub-model include outer diameter, length, applied voltage, terminal resistance, no-load speed/current, startup current/torque, and maximum efficiency/output. CAD and external-dimension drawings are available for download for each sub-model.

Technical characteristics

• Series: C12B
• Outer diameter: 12 mm (φ12)
• Available lengths (examples): 13.5 mm, 17.5 mm
• Applied voltages in examples: 4.5 V, 7.4 V, 12 V
• Terminal resistance range (examples): ≈3.7 Ω to ≈25.9 Ω
• No-load speed range (examples): ≈14,700 rpm to ≈30,500 rpm
• No-load current range (examples): ≈77 mA to ≈190 mA
• Startup current and torque: specified per model (examples: startup current up to ≈2,857 mA; startup torque examples 1.53–7.14 mN·m)
• Maximum efficiency (examples): ≈29.9% to ≈57.5%
• Maximum output (examples): ≈0.93 W to ≈5.70 W
• Customizable items: lead pin, grounding terminal, gear head (selected models), ball bearing (where indicated)
• Downloads: external-dimension drawings and CAD data available per sub-model