Constar 12V DC Inner Rotor Slotless Brushless Motor BS2838NB2B

Product catalog summary

Overview: This document provides technical specifications for the CONSTAR brushless DC motor model BS2838NB2B, designed for precision drives in medical equipment and industrial automation.

Specifications:

Voltage Options: 12.0V, 24.0V, 16.0V
Terminal Resistance: 2.3Ω, 12.7Ω, 14Ω
No-load Speed: 6600 rpm, 4500 rpm
No-load Current: 0.25A, 0.1A
Stall Torque: 83 mNm, 58 mNm, 32 mNm
Stall Current: 5A, 1.9A, 1.1A
Nominal Torque: 10.0 mNm
Nominal Speed: 5550 rpm, 5400 rpm, 3000 rpm
Nominal Current: 0.9A, 0.4A, 0.5A
Max. Output Power: 14W, 10.0W, 3.8W
Max. Efficiency: 61%, 59%, 50%
Back-EMF Constant: 1.7 mV/rpm, 3.4 mV/rpm, 3 mV/rpm
Torque Constant: 16.5 mNm/A, 32.8 mNm/A, 30.9 mNm/A
KV Value: 550 rpm/V, 275 rpm/V, 281 rpm/V
Speed/Torque Gradient: 80 rpm/mNm, 112 rpm/mNm, 139 rpm/mNm
Rotor Inertia: 13 gcm²
Weight: 80g
Thermal Resistance (Housing-Ambient): 17.3 K/W
Thermal Resistance (Winding-Housing): 4 K/W
Thermal Time Constant (Motor): 600s
Thermal Time Constant (Winding): 3s
Operating Temperature Range: -40°C to +100°C
Thermal Class of Winding: 155°C
Axial Play: 0.012 mm
Radial Play: 0.008 mm
Axial Load Dynamic: 5N
Axial Load Static: 80N
Radial Load at 3mm from Mounting Face: 29N
No. of Pole Pairs: 2
Bearings: 2 ball bearings
Commutation: Sensorless
Protection Class: IP 30

Options: Customizable parameters include lead wire length, shaft length, special coils, gearheads, bearing type, Hall sensor, encoder, and driver.

Catalog excerpts

Constar 12V DC Inner Rotor Slotless Brushless Motor BS2838NB2B-1

BS2838NB2B 内转子有槽无传感器 Inner Rotor, Slotted, Sensorless 应用领域 : 医疗器械、工业设备等精密驱动领域。 Applications: precision drives in medical equipment, industrial automation fields. Terminal resistance No-load speed No-load current Stall current Stall torque Nominal torque Nominal speed Nominal current Back-EMF constant Torque constant 最大输出功率最大效率 Speed/torque gradient Rotor inertia Thermal resistance housing-ambient Thermal resistance winding-housing Thermal time constant motor Thermal time constant winding 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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