To drive the rotating threaded spindle – at the highest volume performance by means of a new winding technique. The motor shaft is constructed as a blind hole hollow shaft. The threaded spindle and the motor shaft are connected by a clamping assembly.

Bearing design

Axial angular ball bearing acting on two sides for direct absorption of the threaded spindle forces.
Bearing design
Motor Brake

Optionally the motor b-side can be equipped with a permanent magnet holding brake.
EZ Brake
Power and Encoder Interface

- Rotating plug connectors with quick lock.
- Option: Supplied with mating connectors.
EZ Connection Method
Encoder

- Optical or inductive measuring principle
- High system accuracy with up to 23 bits resolution 
- Up to 4096 recordable resolutions in multiturn version
- Electronic nameplate ensures fast and easy commissioning
- Compatible with STOBER drive controllers and drive controllers of many third-party manufacturers
Resolver
- High temperature resistance
- High vibration strength and shock resistance
Power and Encoder Interface One Cable Solution (OCS)

- Rotating plug connector with quick lock (connection lines between the encoder and drive controller are routed along in the motor's power cable).
- Option: Supplied with mating connector.
EZ Connection Method (OCS)
Encoder One Cable Solution (OCS)

HIPERFACE DSL One Cable Solution (OCS)
- Significantly reduced wiring effort by eliminating the encoder cable
- Significantly reduced space requirements by eliminating the encoder plug connector
- High system accuracy with up to 20 bits resolution 
- Up to 4096 recordable resolutions in multiturn version
- Electronic nameplate ensures fast and easy commissioning
- Additional information transferred with the position value
Winding Protection

PTC thermistors are installed in STOBER synchronous servo motors as a configuration feature to implement thermal winding protection. This makes it possible for the motor to exceed the maximum permitted winding temperature with the appropriate devices turned off.
Paint Finish

- Housing and connector black RAL 9005
- Motor cover b-side magenta RAL 4010
Drive Controller Recommendation

- POSIDRIVE MDS 5000 with power range 0.75 to 45 kW
- POSIDYN SDS 5000 with power range 0.75 to 45 kW
- SD6 with power range 0.75 kW to 45 kW
- SI6 with power range 0.75 kW to 25.9 kW
For further information see Drive Controllers

Type	Nominal speed [1/min]	Nominal torque [Nm]	Nominal current [A]	Stall torque [Nm]	Nominal power [kW]	Maximum torque [Nm]	Mass moment of inertia dynamic [kgcm²]
EZS501	3000	3,85 – 5,1	3,65 – 4,7	4,3 – 5,45	1,2 – 1,6	16	6,5
EZS502	3000	6,9 – 10	5,3 – 7,8	7,55 – 10,9	2,2 – 3,1	31	8,8
EZS503	3000	9,1 – 14,1	6,7 – 10,9	10,7 – 15,6	2,9 – 4,4	43	11,1
EZS701	3000	6,65 – 9,35	6,8 – 9,5	7,65 – 10,2	2,1 – 2,9	20	20,3
EZS702	3000	11 – 16,3	7,75 – 11,8	13,5 – 19	3,5 – 5,1	41	25,6
EZS703	3000	15,3 – 23,7	10,8 – 18,2	19,7 – 27,7	4,8 – 7,4	65	30,8