FA-1725R（2.0 axis） Coreless Brushed DC Motor

The FA-1725R is a 5W high-power coreless brushed DC motor with Φ17mm outer diameter and 25mm body length, featured with 2.0mm output shaft and durable ball bearings. Adopting iron-free coreless rotor and premium precious metal brushes, it delivers outstanding low-speed and high-torque performance, running stably under continuous heavy loads. It comes with multiple voltage grades and supports custom gearbox and encoder assembly.

• Dimension: Φ17mm × Length 25mm
• Rated Power: 5W
• Voltage Options:6.0V / 8.0V / 12.0V / 12.0V
• Precious metal brush & high-performance ball bearings
• Optional customized gearbox and encoder

17×25mm 5W low-speed high-torque coreless brushed motor with 2.0mm shaft and ball bearings

Mechanical Dimensions

FA-1725R Φ17×25mm coreless brushed DC motor mechanical outline drawing

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

Performance Parameters

Motor specifications 104B 04B 95B 65B
Nominal voltage  V 6.0 8.0 12.0 12.0
No load speed rpm 7300 7500 8800 12000
No load current mA 35 25 20 35
Nominal speed rpm 5475 5625 6600 9000
Nominal torque mNm 3.12 3.21 3.13 5.73
Nominal current A 0.42 0.33 0.26 0.64
Stall torque mNm 12.5 12.8 12.5 22.6
Stall current A 1.59 1.26 0.96 2.4
Terminal resistance Ω 3.77 6.35 12.48 5.0
Torque constant mNm/A 7.69 9.98 12.76 9.35
Speed constant rpm/V 1216 937 733 1000
Mechanical time constant ms 8.8 8.4 11.4 8.2
Rotor inertia gcm² 1.5 1.43 1.62 1.57

Optical Gearbox

N/A

Optional encoder

N/A

Other Specifications

Other specifications
Operating temperature range -20…+80℃ Bearing type Ball bearings
Number of pole pairs 1 Brush type Precious metal brushes
Number of phases 5 Weight of motor 26.16g

Engineering Overview

Equipped with sturdy 2.0mm output shaft and wear-resistant ball bearings, FA-1725R greatly enhances structural strength and load capacity. The optimized coreless rotor and 5-segment commutator with precious metal brushes eliminate cogging torque, achieving ultra-smooth operation at low rotating speed. It features large rotor inertia and excellent torque output, especially suitable for scenarios requiring low speed and high thrust. Two different performance versions under 12V provide more selection space. Optional gearboxes and encoders can be equipped to further amplify torque and realize precise position control.

Typical Applications:
• Low-speed high-torque industrial miniature actuators
• Heavy-load precision transmission equipment
• Large-torque portable medical drive devices
• Stable-output micro pump systems

Need low-speed torque optimization or shaft matching solutions?

FA-1725R adopts ball bearings and 2.0mm shaft, featuring remarkable low-speed high-torque performance. We can customize coil parameters and select supporting gearbox & encoder to fit your low-speed heavy-load working conditions.