Custom High Performance Nema 34 Stepper Motor 86mm Factory, Manufacturers- Suzhou Retek Electric Technology Co., Ltd

High Performance NEMA 34: Unrivaled Torque and Speed in Steppers

The High Performance NEMA 34 Stepper Motor (86mm frame) represents the pinnacle of stepper technology, delivering immense holding torque (up to 15 Nm or more) while maintaining superior dynamic torque at medium speeds (up to 1000 RPM).

These motors are significantly longer than standard NEMA 34s and are built with ultra-low inductance windings and the highest energy product NdFeB magnets. They are specifically designed for operation with high-voltage (80V to 150V DC Bus) servo-stepper drives, which is essential to overcome the winding inductance and achieve rapid current changes, thereby maximizing the usable power at high mechanical speeds.

Introduction

Detailed Parameters and Performance Data

RETEK: Peak Power for Heavy Industrial Motion

Suzhou Retek Electric Technology Co., Ltd. provides this high-performance series for demanding applications in large-scale machine tools and industrial automation. We engineer the magnetic circuit and cooling paths to manage the high currents and thermal loads associated with maximum torque delivery. This series offers a compelling alternative to expensive, large-frame AC servo systems, providing robust, high-torque positioning power at a much lower system cost and simpler control interface.

Applications

Advanced Technology Highlights

Extreme Torque Applications for High Performance NEMA 34

Large Gantry CNC Mills and Plasma Cutters: Driving heavy axes requiring sustained high force during acceleration and cutting. Challenge: Handling high inertia and maintaining position against cutting forces.
Industrial Rotary Tables: High-precision indexing of large, heavy fixtures (e.g., welding positioners).
Automated Warehouse Equipment: Actuators for heavy lifting and positioning in Automated Storage and Retrieval Systems (AS/RS).
Film Extrusion and Winding: Tension control and material feed requiring very high, precise holding torque.

Technical Specifications

Industrial & Commercial Usage

Technical Parameters (High Performance NEMA 34)

Parameter	Range / Typical Value	Unit
Frame Size (NEMA)	34 (86mm), Long Stack	Standard
Holding Torque	6.0 to 15.0+	Nm
Inductance per Phase	$ < 6$	mH (Ultra-Low)
Recommended Voltage	80 to 150	VDC Bus
Phase Current (Rated)	4.0 to 8.0	A

Additional Information

Supplementary Details & Notes

Integrated Production and Customization Workflow

Production includes advanced automated winding and impregnation techniques to enhance thermal transfer and stability. We perform vibration analysis on all units to ensure smooth, quiet operation at high speed.

Shaft/Flange Customization: Providing custom flange interfaces and shafts (e.g., metric sizes, spline, keyways) for precise coupling to industrial gearboxes or direct drives.
Brake & Encoder Package: Offering the motor pre-assembled with a high-resolution encoder and a matching electromagnetic brake for plug-and-play servo-stepper integration.
IP Rating Upgrade: Enhancing the enclosure with heavy-duty seals to achieve an IP65 rating, necessary for dirty or wet industrial environments.
Integrated Temperature Sensor: Embedding a PT100 or thermistor into the winding for precise thermal monitoring by the drive controller.

Service & Support

Technical Advantages and Core Design Features

Superior Dynamic Torque: Optimized windings and high drive voltage capability ensure excellent torque preservation at speeds up to 1000 RPM.
Maximum Torque Density: Achieved through longer magnetic stacks and premium NdFeB magnets, resulting in industry-leading static holding torque.
Reduced Heat Profile: Despite high power, the efficient material utilization and low-inductance design minimize I2R losses, improving thermal stability.
Closed-Loop Compatibility: Available with a pre-mounted high-resolution encoder and matched with a powerful servo-stepper drive for stall-free operation.
Robust Bearings: Heavy-duty, deep-groove ball bearings are used to support significant radial and axial loads from large pulleys or direct drives.

Frequently Asked Questions

Common Inquiries Regarding High Performance NEMA 34

Q: What is the highest recommended drive voltage for this series?
A: We typically recommend operation between 80V and 110V DC bus. While some drivers support up to 150V, the voltage should be carefully matched to the motor's winding insulation class and the safety standards of the application. Higher voltage directly correlates to better high-speed torque.

Q: Does the use of a high-power stepper require forced-air cooling?
A: For applications where the motor operates near its maximum continuous torque rating for extended periods, or in high-ambient temperature environments, forced-air cooling (fan) is mandatory to prevent exceeding the winding insulation temperature limit and maximize motor life.

Q: Why is an 8-wire connection often available for this motor?
A: The 8-wire configuration provides the most flexibility, allowing the user to connect the motor in Series (highest torque at low speed) or Parallel (best high-speed performance) to match the drive current limit and application requirement.

Resources

Advanced Material Selection Guide

Magnets: Use of proprietary high-coercivity NdFeB magnets to prevent demagnetization under high temperature or extreme current peaks.

Laminations: Thin, grain-oriented silicon steel laminations to ensure minimal core losses at the high switching frequencies utilized by advanced drivers.

Shaft: Precision-ground, hardened, and balanced steel shaft (typically 14mm) to withstand the torsional stress of high torque and high-speed operation.

About Jiangsu Retek Motion Co., Ltd.

Unlike other motor suppliers, Retek engineering system prevents the selling of our motors and components by catalogue as every model is customized for our customers. The customers are assured that every component they receive from Retek is designed with their exact specifications in mind. Our total solutions are a combination of our innovation and a close working partnership with our customers and suppliers.

As China High Performance Nema 34 Stepper Motor 86mm Manufacturers and Wholesale High Performance Nema 34 Stepper Motor 86mm OEM/ODM Suppliers, Retek business consists of three platforms: Motors, Die-Casting and CNC manufacturing and wire harness. Retek products are widely supplied for residential fans, vents, boats, airplanes, medical facilities, laboratory facilities, trucks and other automotive machines.

Welcome to send us an RFQ, it is believed you will get the best cost-effective products and services here!

Customized Solutions

Quality Assurance

Global Export

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