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Constar Motion Co., LTD
Constar High power 12v24v Coreless Dc Motor 3257N9C2B

Constar High power 12v24v Coreless Dc Motor 3257N9C2B

Product catalog summary

Overview: The document provides technical specifications for the Precision DC Coreless Motor, model 3257N9C2B with a graphite brush. It is designed for use in precision drive applications across various sectors including medical, healthcare, automotive, robotics, and industrial automation.

Specifications:

Voltage: Available in 12.0V and 24.0V options.
Rotor Resistance: Ranges from 0.44Ω to 2.3Ω depending on the model.
No-load Speed: Varies from 5440 rpm to 7400 rpm.
No-load Current: 100 mA to 150 mA.
Stall Torque: Between 366.4 mNm and 568.1 mNm.
Stall Current: Ranges from 10430 mA to 27270 mA.
Nominal Torque: 31.8 mNm to 45.5 mNm.
Nominal Speed: 5000 rpm to 6810 rpm.
Nominal Current: 1130 mA to 2320 mA.
Max. Output Power: 61 W to 81 W.
Max. Efficiency: 81% to 86%.
Back-EMF Constant: 2.2 mV/rpm to 3.7 mV/rpm.
Torque Constant: 20.9 mNm/A to 35.5 mNm/A.
Speed/Torque Gradient: 9.6 rpm/mNm to 18.6 rpm/mNm.
Rotor Inertia: 42 gcm².
Weight: 230 g.
Thermal Resistance: Housing-ambient is 7.57 K/W, winding-housing is 4.05 K/W.
Thermal Time Constant: Motor is 725 s, winding is 540 s.
Operating Temperature Range: -20°C to +120°C.
Thermal Class of Winding: 155°C.
Axial Play: 0.02 mm to 0.15 mm.
Radial Play: 0.025 mm.
Axial Load: Dynamic is 5.6 N, static is 110 N.
Radial Load: 30 N at 3 mm from mounting face.
No. of Pole Pairs: 1.
Bearings: 2 ball bearings.
Commutator: Metal with 9 segments.
Protection Class: IP 20.

Options: Customizable lead wire length, shaft length, special coils, gearheads, and encoders.

Catalog excerpts

Constar High power 12v24v Coreless Dc Motor 3257N9C2B-1

PRECISION DC CORELESS MOTOR 3257N9C2B 碳刷 Graphite Brush 应用领域 : 医疗、保健、汽车、机器人、工业自动化等精密驱动领域。 Applications: precision drives in medical equipment and devices, healthcare products, automotive, robotics, and industrial automation. Rotor Resistance No-load speed No-load current Nominal current Stall torque Nominal torque Nominal speed Stall current 最大输出功率最大效率 Back-EMF constant Torque constant Rotor inertia Speed/torque gradient Thermal resistance housing-ambient Thermal time constant winding Thermal time constant motor Thermal resistance winding-housing Operating temperature range Thermal class of winding Radial play Axial play Axial load dynamic Axial load static Radial load at 3 mm from mounting face

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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