ECOSTEP 34T80-0850, high torque NEMA 34 servo motor
Technical specifications
| Certificates | UL |
| Flange | 86 mm |
| Max. DC link voltage | 150 VDC |
| Maximum speed | 2500 rpm |
| Peak torque | 7.01 Nm |
| Stall torque | 5.02 Nm |
Overview
The ECOSTEP 34T80-0850 is a high-torque NEMA 34 servo motor in the ECOSTEP 34T series. It is designed for demanding axes requiring strong servo performance in a compact 86 mm flange, specifically where a stepper motor is insufficient but a full AC servo system would be oversized. A rated torque of 2.83 Nm at 500 rpm and 150 W rated power at a 150 V DC link provide a solid basis for dynamic positioning tasks.
With a 150 mm motor length and 4.1 kg mass, the motor supports direct drive concepts on many axes, reducing the need for external gearing. Standard protection is IP40, with an optional IP65 version available for harsher environments (shaft gland remains IP40). Mechanical options such as holding brakes, shaft/flange variants, and a wide encoder range allow precise matching to the mechanics. UL certificates are available for use in corresponding markets.
Advantages
The ECOSTEP 34T80-0850 combines high torque density with servo dynamics in a familiar NEMA 34 format.
- 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 size:Rated 2.83 Nm at 500 rpm in an 86 mm flange allows for a small motor envelope while driving demanding loads.
- Direct drive capable: High stall torque supports direct coupling to the load. This can reduce gearbox use, mechanical complexity, and potential sources of backlash.
- Dynamic servo behavior: Genuine servo operation and the 150 V DC link facilitate rapid acceleration, precise speed control, and repeatable positioning for fast cycle machines.
- Configurable for the application: Encoder variants, an optional 5 Nm holding brake, and mechanical options (shaft with key or long shaft) make it easier to tune the drive to your operating point.
- Economical in its operating range: The motor offers a very good price-to-performance ratio compared to AC servo motors in similar torque classes, especially where 150 V DC systems are already in place.
Where it fits
Use this high-torque NEMA 34 servo motor wherever robust torque and precise positioning are required in limited space.
- Packaging and forming axes in machines needing fast start-stop cycles and accurate motion profiles
- Indexing tables and rotary actuators that benefit from direct drive instead of geared stepper solutions
- Vertical or safety-relevant axes in handling systems when combined with the optional holding brake
- Printing, labeling, and metering equipment where controlled torque and consistent low-speed behavior are important
These are application examples and do not represent specific approvals.
Interfaces
The ECOSTEP 34T80-0850 is designed for 150 V DC link operation and integrates into JAT drive systems as part of a complete servo axis.
- Feedback and encoder options:
- Incremental: Resolutions from 8,000 to 160,000 increments per revolution (up to 256,000 inc/rev on request)
- Absolute: BiSS-B with 17-bit single-turn and 12-bit multi-turn
- SinCos: 1000 periods per revolution for precise position feedback
- Mechanical and protection options: Optional 5 Nm holding brake, shaft with key or long shaft variants, and IP65 housing (shaft gland IP40).
- System integration: Optimized for operation with ECOVARIO 214 servo amplifiers. Matching M23 connector sets and pre-assembled motor, brake, and encoder cables are available to simplify wiring and reduce commissioning effort.
