FA-2835RD Two-Pole Coreless Brushless DC Motor
FA-2835RD is a dependable 26W two-pole coreless brushless DC motor with 28mm outer diameter and 35mm housing length. It adopts reinforced dual ball bearings to resist vibration in handheld operating scenarios. The two‑pole slotless rotor achieves minimal inertia for snappy dynamic response and zero cogging torque. A built‑in 3‑channel hall sensor delivers reliable closed‑loop speed regulation. Four winding specifications cover mainstream 8.4V lithium battery, 12V and 24V power supply standards. Matching planetary gearboxes and EM22 encoders are available to build low‑speed high‑torque precision drive assemblies.
• Dimension: Φ28mm × Length 35mm
• Max Transmission Power: 26W
• Voltage Options: 8.4V(05A) / 12V(03A/02A) / 24V(01A)
• Two‑pole magnetic layout + precision dual ball bearings + integrated 3CH hall sensor
• Standard multi‑color split wiring; Optional planetary gearbox & EM22 series encoders
Mechanical Dimensions
Dimensions are in mm. Please refer to the datasheet for tolerances and mounting details.
Performance Parameters
| Motor specifications | 05A | 03A | 02A | 01A | |
|---|---|---|---|---|---|
| Nominal voltage | V | 8.4 | 12 | 12 | 24 |
| No load speed | rpm | 12900 | 8500 | 13700 | 13700 |
| No load current | mA | 150 | 130 | 150 | 200 |
| Nominal speed | rpm | 11610 | 7650 | 12330 | 12330 |
| Nominal torque | mNm | 13.39 | 21.57 | 20.08 | 20.59 |
| Nominal current | A | 2.29 | 1.72 | 2.54 | 1.41 |
| Stall torque | mNm | 133.9 | 215.7 | 200.8 | 205.9 |
| Stall current | A | 21.54 | 16 | 24 | 12.31 |
| Terminal resistance | Ω | 0.39 | 0.75 | 0.5 | 1.95 |
| Torque constant | mNm/A | 6.22 | 13.48 | 8.36 | 16.73 |
| Speed constant | rpm/V | 1535.7 | 708.3 | 1141.7 | 570.83 |
| Mechanical time constant | ms | 11.52 | 1.35 | 8.16 | 7.96 |
| Rotor inertia | gcm² | 11.96 | 11.96 | 11.96 | 11.96 |
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 | Ball bearings |
| Number of pole pairs | 2 | Weight of motor | |
| Number of phases | 3 |
Engineering Overview
FA-2835RD two‑pole coreless BLDC eliminates cogging torque to deliver quiet, low‑vibration rotary performance. Upgraded ball bearings outperform sleeve bearings on shock tolerance and working lifespan, fitting scenarios with recurring mechanical vibration. Low rotor inertia grants responsive acceleration and braking during variable‑load operation. The wide voltage lineup adapts lithium‑powered handheld tools, portable beauty apparatus and compact automated mechanisms. Assembling an external gearbox multiplies output torque for fine grinding and light carving assignments, while encoders enable closed‑loop position control.
Typical Applications:
• Compact cordless nail drills & mini jade engraving handheld power tools
• Mid‑grade portable facial skincare & salon beauty instruments
• Small bench deburring equipment and miniature automated adjustment modules
• Light‑load joint actuators for desktop small robotic assemblies