Braked Stepper Motor Nema 34 8.5 Nm

Key Advantages

• Integrated Electromagnetic Brake: Ensures secure load stabilization during power loss or stops, preventing load slippage in vertical axis applications and enhancing operational safety.
• High Torque (8.5 Nm): Delivers superior performance in challenging and dynamic applications by enabling precise movement of heavy industrial loads and offering high acceleration capabilities.
• NEMA 34 Standard: Provides broad compatibility in industrial automation systems, allowing for easy and quick integration into existing or new mechanical designs.
• Wide Driver Compatibility: Seamless operation with drivers rated for 4 Amps and above (+24V – +50V) offers flexibility in system design and optimal performance tuning.

CNC Routers and Machining Centers

This braked stepper motor plays a critical role in applications requiring vertical movement, such as the Z-axis of CNC routers. Its high torque allows for precise lifting and lowering of heavy cutting tools or workpieces, while the integrated brake system prevents the Z-axis from dropping under load during power outages or machine stops, maximizing both machining quality and operator safety.

Automated Assembly and Conveying Systems

In automated assembly and conveying systems like robotic arms, conveyor lines, and pick-and-place machines, securely holding loads in designated positions is vital. This motor, with its high-precision stopping and braking capabilities, ensures accurate positioning and transfer of products. The brake mechanism prevents unwanted load movement, especially on inclined conveyors or precise assembly stations.

High Efficiency

Minimizes downtime and reduces error rates in production processes through precise step control and instant braking. Its high torque capacity offers faster and more dynamic movement capabilities, significantly increasing overall system efficiency.

Long Service Life

Built with industrial-grade materials, robust construction, high-quality bearings, and a durable integrated brake system, it ensures long-term, reliable performance even under heavy operating conditions. This reduces maintenance costs and increases return on investment.

Easy Integration

Offers quick and flexible adaptation to existing automation systems thanks to NEMA 34 standard compliant flange dimensions and 8-wire connection options. Wide driver compatibility provides maximum flexibility for system designers.

Compatible Products

Stepper Motor Gearboxes

Precise Torque Increase and Space Saving:
1/5 Nema 34 Right Angle Planetary Gearbox

Its right-angle design saves mounting space and increases the performance of your Nema 34 motor with a high 1/5 torque transmission ratio.
General Purpose Torque Increase (1/5 Ratio):
80PLF5 Planetary Gearbox 1/5

Suitable for Nema 34 motors, it provides a 1/5 torque increase and precision, making it ideal for general industrial applications.
High Torque and Fine Step Resolution (1/10 Ratio):
80PLF10 Planetary Gearbox 1/10

With a higher 1/10 reduction ratio, it allows you to achieve more torque and finer step resolution from your Nema 34 motor.
For Different Reduction Ratio Needs (1/3 Ratio):
Stepper Motor Planetary Gearbox 1/3

Suitable for applications requiring a lower reduction ratio (1/3), it increases torque while reducing motor speed less.
High Performance and Low Backlash:
Nema 34 Servo and Stepper Planetary Gearbox 1/5 FALCON

With its low backlash feature, it offers superior performance for critical applications requiring high precision and repeatability.

Stepper Motor Power Supplies

For Single Nema 34 Motor (48V DC):
48 Volt 12.5 Amp Power Supply Ms-600-48 600 Watt

Provides compact, high-efficiency, and stable 48V DC output, sufficient and reliable power for a single Nema 34 motor. Can be connected directly to drivers, requiring no additional components.
For Single Nema 34 Motor (60V DC):
60 Volt 10 Amp Power Supply Ms-600-60 600 Watt

Allows your Nema 34 motor to reach higher speeds with its higher 60V DC output, offering stable and efficient power. Can be connected directly to drivers, requiring no additional components.
For Two Nema 34 Motors (48V DC):
48 Volt 12.5 Amp Power Supply Ms-600-48 600 Watt

Can provide sufficient power for two Nema 34 motors, but a higher current capacity source may be preferred at full load. It is a compact and regulated DC solution.
For Two Nema 34 Motors (60V AC Transformer):
60 Volt 18 Amp Transformer Power Supply (AC)

Offers ample current capacity for two Nema 34 motors, it is a robust and reliable AC power supply. Requires an external bridge rectifier and capacitor bank to obtain DC output, which provides a more stable supply.
For Three Nema 34 Motors (60V AC Transformer):
60 Volt 24 Amp Transformer Power Supply (AC)

Provides abundant power and current reserve for three Nema 34 motors, ideal for industrial and heavy-duty applications. Requires an external bridge rectifier and capacitor bank to obtain DC output.
For Three or More Nema 34 Motors (60V AC Transformer):
60 Volt 30 Amp Transformer Power Supply (AC)

With the highest current capacity, it offers maximum performance and reliability for three or more Nema 34 motors. Requires an external bridge rectifier and capacitor bank to obtain DC output.

Stepper Motor Drivers

General Nema 34 Motor Control:
Stepper Motor Driver JSS556

Suitable for Nema 34 motors, it provides smooth and quiet operation with advanced micro-stepping technology. Ideal for Nema 34 motors requiring lower current.
High Torque Nema 34 Motor Control:
Stepper Motor Driver JSS860H

Specifically designed for high-torque Nema 34 motors like the 8.5 Nm model, it offers superior performance and precision with its high current (8.2A) and voltage capacity.
High Torque Nema 34 Motor Control (Alternative):
Stepper Motor Driver Cwd860h

Similar to the JSS860H, it offers a reliable and cost-effective solution for high-torque Nema 34 motors, with a wide range of applications (max 7.2A).

This motor draws 4.9 Amps of current and operates smoothly with a DC supply voltage ranging from +24V to +50V. It is important that your driver also supports this current and voltage range.

Since your motor has a rated current of 4.9 Amps, you should use a stepper motor driver capable of delivering at least 4 Amps and above. Drivers supporting the +24V to +50V range for supply voltage are preferred.

Your motor has 8 wires, and the coil connection diagram is as follows:
A+ Blue-Red
A- Yellow-Black
B+ Orange-Green
B- Brown-White
This wiring diagram ensures that you connect the motor’s coil phases correctly to the driver.

Yes, you can easily use your motor with any controller that can generate pulse/direction signals, such as a Pulse Generator Card, Arduino Card, Mach3 Control Card, PLC Card, or similar. The important thing is that the controller can send the appropriate signals to your driver.

It is normal for stepper motors to heat up to a certain level when producing full torque. However, in cases of excessive heat (too hot to touch), it is recommended to check your driver’s current settings, review the motor’s duty cycle or mechanical load, and consider adding cooling measures (e.g., a fan) if necessary.

Yes, the brake mechanism in these types of braked stepper motors is typically a “power-off brake” type. This means that when the power to the motor is cut, the brake automatically engages to prevent unwanted movement of the load and locks the shaft. Power must be supplied to the brake coil for the brake to be released while the motor is running.

An 8.5 Nm (Newton meter) torque value means the motor can turn a 1-meter lever arm at its shaft with a force of 8.5 Newtons. This torque value is quite powerful and suitable for CNC routers, automation machines, conveyor systems, or other precise positioning applications requiring medium-to-heavy load handling.

There is a link on our product page that says “Click for Compatible Planetary Gearboxes.” You should choose planetary gearboxes with a Nema 34 flange size (86×86 mm) and appropriate ratios for your motor’s torque and speed requirements. Connection dimensions and torque capacity are important for correct gearbox selection.

8-wire stepper motors offer the flexibility to connect the coils in different configurations (series, parallel, or unipolar). This gives you more control, especially when you want to optimize for torque at high speeds or precision at low speeds. Parallel connection is often preferred for high-speed performance.

Since your motor draws 4.9 Amps, it is important to use thicker gauge cables for long distances to prevent voltage drop and overheating. Typically, cross-sections like 0.75 mm² or 1.0 mm² may be sufficient for distances up to 5-10 meters. For longer distances, cross-sections of 1.5 mm² or higher should be preferred.

At Mermak CNC Automation, our standard warranty conditions apply to our products. You can review our warranty policy on our website or contact our customer representatives for detailed information and warranty periods.

Yes, as Mermak CNC Automation, we provide assistance with after-sales technical support and spare parts supply for all products we sell. In case of a malfunction, you can contact our technical service for detailed information and support.

Yes, special discounts are applied for bulk purchases of our Braked Stepper Motor Nema 34 8.5 Nm product. You can contact our customer representatives for your bulk purchase requests to receive a detailed price quote.

You can contact the Mermak CNC Automation technical support team for any technical questions or issues you may encounter during installation or use. Our expert team will provide you with solution-oriented support.