ECOSTEP 34S503-0700, high torque NEMA 34 servo motor
Technical specifications
| Flange | 86 mm |
| Max. DC link voltage | 325 VDC |
| Maximum speed | 2000 rpm |
| Peak torque | 10 Nm |
| Stall torque | 8 Nm |
Overview
The ECOSTEP 34S503-0700 is a high-performance rotary servo motor in the ECOSTEP 34S50x series, designed for demanding axes that require very high torque in a compact NEMA 34 (86 mm) flange. The motor has a housing length of approximately 190 mm, a 14 mm shaft, and a mass of around 5.5 kg, providing significant drive capacity in a still compact form factor.
At a 325 V DC link, the 34S503-0700 reaches approximately 3.7 Nm rated torque at 500 min⁻¹ and roughly 200 W rated power, with up to 10 Nm peak torque available for short-term loads. Rated values are defined for mounting on a 200 × 240 × 20 mm flange. The motor targets applications that combine high torque, dynamic servo behavior, and a standard NEMA 34 interface on higher DC link voltages. Standard protection is IP40, with an IP65 option for more demanding environments (shaft gland remains IP40). The ECOSTEP 34S series offers extensive mechanical and encoder options so that the motor can be configured for specific machine interfaces and environmental requirements.
Advantages
The ECOSTEP 34S503-0700 is the highest torque NEMA 34 servo motor in the ECOSTEP 34S50x range and supports powerful, precise motion in compact machines.
- When high torque at low speed and precise control are required, ECOSTEP motors provide a cost-efficient alternative to traditional servo motors.
- Compact and powerful: Up to 10 Nm peak and 8 Nm stall torque in a NEMA 34 frame enable high-torque axes where installation space is limited.
- Direct drive capable: The available torque can allow direct drive concepts without a gearbox in many applications. This reduces external gear components and simplifies mechanics.
- High dynamic servo operation: Genuine servo behavior supports rapid acceleration, precise speed control, and repeatable positioning on demanding axes.
- Flexible configuration: Mechanical options, encoder choices, and protection upgrades let you adapt the motor to the operating point and environment instead of redesigning the mechanics around a fixed motor.
Where it fits
Use this high-torque NEMA 34 servo motor when you need compact but powerful axes with precise positioning.
- High-torque rotary or linear axes in assembly and handling systems
- Packaging, indexing, and format adjustment axes that move heavier loads or higher inertia tooling
- Direct drive rotary positioning units or actuators in special machinery
- Vertical or inclined axes that benefit from high torque and an optional holding brake
- Upgrades of existing NEMA 34 driven machines where more torque and servo dynamics are required on higher DC link voltages
These are application examples and do not represent specific approvals.
Interfaces
The ECOSTEP 34S503-0700 is designed for DC link voltages up to 370 V DC (rated at 325 V DC) and is optimized for use with the ECOVARIO 414 servo amplifier.
- Encoder options:
- Incremental: Standard resolutions from 8,000 to 160,000 increments per revolution
- SinCos: 1000 periods per revolution with programmable resolution
- Absolute: BiSS-B interface up to 17-bit single-turn and 12-bit multi-turn (single-turn resolutions up to 19-bit and individual resolutions up to 256,000 inc/rev possible on request)
- Mechanical and protection options:
Optional 5 Nm holding brake, shaft with key or long shaft, bearing flange variants, and IP65 housing option (shaft gland remains IP40) to match mechanical interface and environmental requirements. - Connection and cabling:
Mating connector set 70.070 with M17 motor and encoder connectors and brake connector 70.014. Pre-assembled motor, brake, and encoder cable assemblies support reliable wiring and help shorten commissioning in the drive system.
