FA-1715RD Two-Pole Coreless Brushless DC Motor

FA-1715RD is a compact 7W two-pole miniature coreless brushless DC motor with Φ17mm outer diameter and 15mm short body length. Adopting two-pole magnetic structure delivers ultra-low rotor inertia and rapid start-stop response. It is equipped with durable sleeve oil bearings and built-in 3-channel hall sensor to maintain stable closed-loop speed regulation under light loads. Four winding versions cover mainstream 7.4V lithium and 12V low industrial voltages, including multiple high-speed variants. Custom micro planetary gearbox and miniature encoders are available for ultra-compact handheld devices.

• Dimension: Φ17mm × Length 15mm
• Max Transmission Power: 7W
• Voltage Options: 7.4V(02A/03A/04A) / 12V(01A)
• Two-pole magnetic structure + sleeve oil bearings + integrated 3CH hall sensor
• Standard 8Pin pin header wiring; Optional micro gearbox & miniature encoders

FA-1715RD Φ17×15mm two-pole coreless brushless DC motor dimension diagram

Mechanical Dimensions

FA-1715RD Φ17×15mm two-pole coreless brushless DC motor dimension diagram

Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.

Performance Parameters

Motor specifications 02A 03A 04A 01A
Nominal voltage  V 7.4 7.4 7.4 12
No load speed rpm 29200 26300 27650 28300
No load current mA 220 200 200 140
Nominal speed rpm 26280 23670 24885 25470
Nominal torque mNm 2.52 2.03 2.1 2.43
Nominal current A 1.24 0.94 1.0 0.73
Stall torque mNm 25.2 20.3 21.0 24.3
Stall current A 10.42 7.55 8.22 6.0
Terminal resistance Ω 0.71 0.98 0.9 2.0
Torque constant mNm/A 2.4 2.68 2.55 4.05
Speed constant rpm/V 3945.9 3554.0 3736.5 2358.3
Mechanical time constant ms 6.03 6.76 6.86 6.07
Rotor inertia gcm² 0.52 0.52 0.52 0.52

Optical Gearbox

N/A

Optional encoder

N/A

Terminal data

Terminal data
Teminal model :

Other Specifications

Other specifications
Operating temperature range -20…+80℃ Bearing type Sleeve bearings
Number of pole pairs 2 Weight of motor
Number of phases 3

Engineering Overview

FA-1715RD two-pole coreless BLDC eliminates iron cogging torque, delivering ultra-silent, smooth high-speed rotation. Two-pole slotless design features tiny rotor inertia, enabling ultra-fast acceleration and deceleration response. Compact Φ17×15mm slim body fits narrow internal space of handheld mini devices. Sleeve oil bearings provide stable long-term low-load operation. Multiple 7.4V lithium and 12V industrial winding versions match mainstream portable consumer electronics. Optional micro gearbox converts high-speed output to low-speed high-torque drive for tiny precision modules.
Typical Applications:
• Mini nail polishers, facial massage & handheld beauty care instruments
• Portable miniature medical sampling and testing equipment
• Tiny optical focusing and micro camera gimbal adjustment modules
• Small rechargeable personal care household appliances

Need ultra-small two-pole motor parameter customization?

FA-1715RD supports 7.4V/12V multiple high-speed winding variants with standard 8Pin pin header. We customize coil parameters, shaft size and pin wire length for mini portable devices.