Stoeber PK-EZ angular servo gearmotor

Planetary gearbox with bevel right angle gear and servo motor in direct mounting without adapter and coupling. Synchronous electric motor with absolute encoder. Power range 0.25 – 19.0 kW. Gear ratios from 12:1 – 486:1. Max. torques 68 – 2,700 Nm. Backlash 3.5 – 5 arcmin. 94% efficiency. Servo geared motor optionally with reduced backlash, resolver, up to 2 brakes, fan, and rack and pinion drive. Includes Stober servo drive with cables and resistor.

PK-EZ angular servo gearmotor

Features of PK-EZ angular servo gearmotor

• Compact and highly dynamic thanks to the direct mounting of the servo motor on the gearbox.
• Quiet operation – achieved through helical gearing.
• High precision – available with standard or reduced backlash.
• No positioning errors – fractional gear ratios available.
• Maintenance-free – no oil change required.
• Mounting position to be specified upon ordering.
• Ambient temperature range: 0 °C to 40 °C (other ranges available on request).
• Filled with synthetic grease CLP HC ISO VG 150.
• Maximum permissible gearbox surface temperature ≤ 80 °C.
• Protection class: IP65.
• Standard output shaft seal made of NBR; optional FKM.
• For duty cycles > 60% and higher ambient temperatures, FKM radial shaft seals on the output are recommended.
• Cast iron housing.
• Painted black RAL9005 (other colors available on request).

Optional Configurations of PK-EZ angular servo gearmotor

• Reduced backlash version.
• Protection class IP66 – splash-proof and dust-tight.
• Reinforced output shaft bearing.
• With 24 VDC brake.
• With external cooling (fan).
• With modular output gear on the gearbox output shaft.
• With Mobil CIBUS 150/220 oil for food industry applications (NSF H1 approved).
• Oil expansion tank for vertical mounting position.
• Angular planetary gearbox PK-ME with adapter, without servo motor.
• Angular servo gearmotor PK-MB-EZ with two ServoSTO safety brakes.

Features of EZ servo motors

• Permanent magnet synchronous electric motors.
• Rotary plug connectors with quick-lock mechanism.
• Operating temperature range: -15°C to +40°C.
• Standard protection class IP56, optionally IP66.
• Thermal class F (155°C).
• Electronic nameplate for quick identification of servo motor parameters.
• Lifetime-lubricated rolling bearings with non-contact sealing.
• Radial shaft seals made of FKM VITON.
• Standard radial and axial run-out tolerances according to IEC 60072-1.
• Permissible noise levels according to EN 60034-9.
• Not suitable for use in explosive atmospheres.
• Certificates: CE, UKCA, optionally cURus.
• Integrated PTC thermistor; optional PT1000 temperature sensor.
• Black color RAL9005, other RAL colors available on request.
• Optional reference elimination for multiturn absolute encoders.
• With external fan for higher ambient temperatures, increased continuous power, or 30% higher torque.
• With 24VDC electromagnetic safety brake.

Encoders in PK-EZ servo gearmotor

• Resolver
• Absolute encoder EnDAT 2.1/2.2, inductive or optical, Multiturn / Singleturn
• Optional single-cable OCS solution with EnDat 3.0 absolute encoder (EQI 1131) for cable lengths up to 100 m

Compatibility of PK-EZ servo gearmotor with servo drives

• Single-axis SB6, dual-axis SC6, multi-axis SI6 and SD6 drives by STOBER
• Acopos drives by B&R
• AX5000 drives by Beckhoff
• AKD, S300, S400, S600 drives by KOLLMORGEN
• Sinamics S120 drives by SIEMENS
• IndraDrive drives by Bosch Rexroth
• Kinetics drives by Allen-Bradley
• UniDrive, Digitax drives by Control Techniques