ECOSTEP 34T90-0950, high torque NEMA 34 servo motor
Technical specifications
| Certificates | UL |
| Flange | 86 mm |
| Max. DC link voltage | 150 VDC |
| Maximum speed | 2000 rpm |
| Peak torque | 10.56 Nm |
| Stall torque | 7.3 Nm |
Overview
The ECOSTEP 34T90-0950 is a compact rotary servo motor in the ECOSTEP 34T series. It combines a standard 86 mm NEMA 34 flange with a long housing and a mass of approximately 5.5 kg, placing high torque directly into space-critical machine layouts. Rated torque is 3.76 Nm at 500 rpm, with a maximum speed of 2000 rpm at a 150 V DC link.
The motor runs in genuine servo operation and is designed for dynamic start-stop motion and precise positioning on high-load axes. Standard protection is IP40, with an IP65 option available for harsher environments (shaft gland remains IP40). The 34T90-0950 is UL certified according to JAT technical data. Options include a 5 Nm holding brake, encoder variants, shaft/flange versions, and connector sets that support clean integration into JAT drive systems.
Advantages
The ECOSTEP 34T90-0950 provides high-torque servo performance in a NEMA 34 footprint.
- When high torque at low speed and precise control are required, ECOSTEP motors provide a cost-efficient alternative to traditional servo motors.
- High torque in compact format: Supports direct drive concepts where a gearbox can often be avoided. This simplifies mechanics and reduces external components.
- Dynamic servo behavior: Enables rapid acceleration, braking, and repeatable positioning on demanding motion profiles.
- Flexible configuration: Mechanical and electrical options allow you to adapt the shaft, flange, encoder, and brake configuration to the application without upsizing the axis.
Where it fits
Use this high-torque NEMA 34 servo motor where loads are high but installation space is limited.
- Packaging and forming axes with high forces and short indexing cycles
- Vertical and rotary axes in handling, assembly, or robotics that benefit from a direct drive servo motor
- Conveyor, feed, and format adjustment drives in machine tools or process equipment
- Positioning tasks in printing, converting, or material processing requiring stable torque at low speed
Interfaces
The ECOSTEP 34T90-0950 is designed for 150 V DC link systems and integrates into JAT drive solutions as a high-torque NEMA 34 servo motor.
- Electrical interface:
- DC link up to 150 V DC
- Rated current approximately 3.8 A per phase (peak currents for dynamic moves specified in datasheet)
- Feedback options:
- Incremental: ABN encoders with resolutions from 8,000 to 160,000 inc/rev (higher on request)
- Absolute: BiSS B with single-turn and multi-turn position (optional combination with SinCos output for advanced control)
- System integration:
- Optimized for operation with ECOVARIO 214 servo amplifiers
- Optional 5 Nm holding brake and pre-assembled motor, brake, and encoder cable assemblies simplify wiring and commissioning.
