Stoeber PH-EZ planetary servo gearmotor

Planetary gearbox with flanged, rotating shaft 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 3:1 – 120:1. Max. torques 24 – 7500 Nm. Backlash 1 – 4 arcmin. Servo geared motor optionally with reduced backlash, resolver, fan, up to 2 brakes, and ZTR-PH-EZ rack and pinion drive. Complete with Stober servo drive, cables, and resistor.

PH-EZ planetary servo gearmotor

Features of PH-EZ planetary servo gearmotor

• High-performance and precise servo motors with planetary gearbox in direct mounting, without adapter or coupling.
• High-performance servo gearboxes with increased torsional and radial stiffness.
• Output shaft: rotating flanged shaft.
• High precision – standard or reduced backlash.
• Fractional gear ratio ensures no positioning errors.
• Maintenance-free – no oil changes or servicing required.
• Low-noise operation with helical gears, max. 59–64 dB.
• Radial shaft seals: FKM on input / NBR on output.
• Low moments of inertia.
• Rigid output bearing due to preload.
• Continuous operation without additional cooling.
• Ambient temperature from 0°C to 40°C (other temperature ranges on request).
• Maximum gearbox housing temperature ≤ 90°C.
• Protection class IP65.
• Any mounting position.
• Synthetic gear oil CLP HC ISO VG 150.
• One primer paint coat in RAL 7001 or RAL 9005.

Optional versions of PH-EZ planetary servo gearmotor

• Reinforced axial and radial bearing of the output shaft for sizes PH3–PH5.
• Double sealing of the servo motor adapter.
• FKM VITON seals for high-temperature applications.
• With modular helical gear.
• Special oils for the food industry on request.
• Two or more paint layers in any RAL color.
• Corrosion-resistant Washdown version.
• Protection class IP66.
• Modified oil quantity for bidirectional operation within a movement range of ±20° to ±90°.
• Cyclic reversing operation ≤ ±20° available on request.
• Without adapter – direct mounting with EZ/LM servo motors.
• With safety brake integrated in the gearbox adapter.

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 PH-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 PH-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