General Specification
- Winding type: YWE
- Hall effect angle: 120 Degree electrical angle
- Radial play: 0.02mm / 460g
- End play: 0.08mm / 450g
- Max. radial force: 220N @ 20mm from the flange
- Max. axial force: 60N
- Insulation class: B
- Dielectric strength: 500VDC for one minute
- Insulation resistance: 100MΩ min., 500VDC
Defination of Part number
90 | ZW | 3 | S | 68 | A | 40 | X |
Frame size | Brushless dc motor | Phase | Squared * | Length | Voltage ** | Speed | External code |
*: This code shows the sharp of the motor. S = Square; Y =Round.
**: This code shows the voltage of the motor, the detail code defination is: A=24V; B=36V; C=48V; D=170V; E=310V; F=325V; 12=12V; 15=15V
Specifications
| Model | Units | 90ZW3S 68A40 | 90ZW3S 75C40 | 90ZW3S 88C20 | 90ZW3S 88C60 | 90ZW3S 108C20 | 90ZW3S 108C40 | 90ZW3S 136E20 | 90ZW3S 136E60 |
|---|---|---|---|---|---|---|---|---|---|
| Number of poles | 4 | ||||||||
| Number of phase | 3 | ||||||||
| Rated voltage | VDC | 24 | 48 | 48 | 48 | 48 | 48 | 310 | 310 |
| Rated speed | RPM | 4000 | 4000 | 2000 | 6000 | 2000 | 4000 | 2000 | 6000 |
| Continuous stall torque | N.m | 0.6 | 0.8 | 1.2 | 1.2 | 1.7 | 1.7 | 2.8 | 2.2 |
| Rated torque | N.m | 0.5 | 0.7 | 1 | 1 | 1.6 | 1.5 | 2.5 | 2 |
| Rated power | W | 209 | 293 | 209 | 628 | 335 | 628 | 524 | 1256 |
| Peak torque | N.m | 1.5 | 2.1 | 3 | 3 | 4.8 | 4.5 | 7.5 | 6 |
| Peak current | A | 17.3 | 24.2 | 17.4 | 35 | 27.8 | 51.8 | 6.6 | 14.7 |
| Torque constant | Nm/A | 0.087 | 0.087 | 0.172 | 0.086 | 0.172 | 0.087 | 1.137 | 0.409 |
| Back E.M.F | V/KRPM | 9.2 | 9.2 | 18.24 | 9.06 | 18.24 | 9.2 | 120.3 | 43.3 |
| Rotor inertia | kg.c㎡ | 0.45 | 0.6 | 0.9 | 0.9 | 2.1 | 2.1 | 2.95 | 2.95 |
| Body length | mm | 68 | 75 | 88 | 88 | 108 | 108 | 136 | 136 |
| Voltage range | VDC | 12~170 | 12~170 | 24~310 | 24~310 | 24~310 | 24~310 | 24~310 | 24~310 |
| Speed Range | RPM | 2000~6000 | |||||||
| Weight | Kg | 1.4 | 1.7 | 2.1 | 2.1 | 2.6 | 2.6 | 4.1 | 4.1 |
| Model | Units | 90ZW3S 681230 | 90ZW3S 75A30 | 90ZW3S 88C10 | 90ZW3S 88C30 | 90ZW3S 108C10 | 90ZW3S 108C30 | 90ZW3S 136E10 | 90ZW3S 136E30 |
|---|---|---|---|---|---|---|---|---|---|
| Number of poles | 8 | ||||||||
| Number of phase | 3 | ||||||||
| Rated voltage | VDC | 12 | 24 | 48 | 48 | 48 | 48 | 310 | |
| Rated speed | RPM | 3000 | 3000 | 1000 | 3000 | 1000 | 3000 | 1000 | 3000 |
| Continuous stall torque | N.m | 0.6 | 0.8 | 1 | 1 | 1.9 | 1.9 | 3 | 3 |
| Rated torque | N.m | 0.5 | 0.7 | 0.85 | 0.85 | 1.7 | 1.7 | 2.5 | 2.5 |
| Rated power | W | 157 | 220 | 89 | 267 | 178 | 534 | 262 | 785 |
| Peak torque | N.m | 1.5 | 2.1 | 2.55 | 2.55 | 5.1 | 5.1 | 7.5 | 7.5 |
| Peak current | A | 50.4 | 70.5 | 7.9 | 21.4 | 16.9 | 42.8 | 4 | 9.7 |
| Torque constant | Nm/A | 0.03 | 0.03 | 0.324 | 0.119 | 0.302 | 0.119 | 1.89 | 0.77 |
| Back E.M.F | V/KRPM | 3.15 | 3.15 | 34.3 | 12.6 | 32 | 12.6 | 200 | 81.5 |
| Rotor inertia | Kg.c㎡ | 0.6 | 0.8 | 1.2 | 1.2 | 1.8 | 1.8 | 2.65 | 2.65 |
| Body length | mm | 68 | 75 | 88 | 88 | 108 | 108 | 136 | 136 |
| Voltage range | VDC | 12~90 | 12~170 | 24~310 | 24~310 | 24~310 | 24~310 | 24~310 | 24~310 |
| Speed Range | RPM | 1000~3000 | |||||||
| Weight | Kg | 1.4 | 1.7 | 2.1 | 2.1 | 2.6 | 2.6 | 4.1 | 4.1 |
In-Depth Applications for the 90mm Brushless DC Motor
The 90ZW3S’s 90x90mm frame and massive torque output make it a powerful solution for heavy-duty automated machinery. Key application areas include:
- Logistics & AGVs: Delivers the high torque required for driving the wheels of heavy-load Automated Guided Vehicles (AGVs) and large-scale sorting systems.
- Industrial Automation: Ideal for driving gantries on large CNC machines, high-load actuators, and industrial pumps that require a powerful 90mm brushless dc motor.
- Robotics & Actuators: Powers large robotic arms and linear actuators where a high-torque 90mm brushless dc motor is essential for heavy lifting and load-bearing tasks.
Outline

Customization
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| Shaft | Encoder | Brake | Connector | Pulley | Gearbox |
| Item | Description |
|---|---|
| Shaft Extensions | Motors can be configured with single or double-ended shafts, manufactured to your specific length. |
| Encoder Options | We offer integration with various encoders to meet specific resolution and application needs. |
| Brake Options | Motors can be equipped with an optional brake, available with or without a manual hand release. |
| Cable Harnesses | Custom cable harnesses, with or without connectors, are available upon request. |
| Pulleys & Pinion Gears | Pulleys or pinion gears can be supplied and mounted to your specifications. |
| Gearbox Integration | Most motors can be paired with various gearbox types, including planetary, worm wheel, and parallel shaft gearboxes. |
Frequently Asked Questions (FAQ)
Q: What is the main advantage of this 90mm bldc motor?
A: The 90ZW3S is designed for high power and torque within a 90mm frame. It is built for high-speed, continuous-run applications where efficiency (less heat) and a long lifespan are required. This contrasts with a stepper motor, which is often selected for low-speed holding torque.
Q: What is the benefit of the high voltage (up to 310V) capability?
A: The high voltage option (like the 310V models) allows this 90mm brushless dc motor to achieve its full power rating (over 1000W) at a lower current. This reduces heat, allows for thinner cables, and makes it compatible with high-voltage industrial AC servo drivers.
Q: What kind of driver does this bldc motor require?
A: This 90ZW3S motor requires a compatible BLDC motor driver. Given its high power, it’s often paired with a high-voltage driver. Our technical team can help you select the precise driver to match your voltage and performance needs.
Q: Is this motor suitable for precision control?
A: Absolutely. When ordered with an optional encoder, this 90mm brushless dc motor becomes a complete high-performance servo motor, perfect for precision positioning and velocity control in demanding applications.






