Angular servo gearmotor KS-EZ
Angular gear unit KS with synchronous electric motor, EZ servo motor. Angular servo gearmotors with a power range of 0.29 – 31.0 kW. Gear ratios from 2:1 to 400:1. Maximum torque: 27 – 400 Nm. Backlash: 5.0 – 6.0 arcmin. Efficiency: 93 – 95%. Optional features include resolver, brake, fan, single-cable servo motor with EnDat 3.0 encoder, clamping ring, rotating flange with through bushing, and rack-and-pinion drive ZV-KS-EZ. Supplied complete with SB6, SD6, SC6, and SI6 servo drives.
Angular Servo Gearmotor KS-EZ
Features of KS-EZ Angular Servo Gearmotors
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Compact and highly dynamic thanks to the direct mounting of the gearbox on the servo motor without adapter and coupling.
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Quiet operation – achieved through helical gearing.
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High precision with low backlash.
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No positioning errors – fractional gear ratios available.
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Maintenance-free – no oil change required.
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Reinforced output shaft bearing – available on request.
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Ambient temperature range: 0 °C to 40 °C (other ranges available upon request).
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Filled with synthetic grease CLP HC ISO VG 150.
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Maximum permissible gearbox surface temperature ≤ +90 °C.
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Protection class IP65, optionally IP66.
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Standard output shaft seal made of NBR; optional FKM.
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For duty cycles > 60% and higher ambient temperatures, FKM radial shaft seals on the output are recommended.
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Cast iron housing.
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Oil quantity depends on mounting position.
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Oil expansion tank for vertical downward mounting position EL5.
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Standard paint: black RAL9005 (other colors and painting methods available on request).
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Optional with Mobil CIBUS 150/220 oil for food industry applications (NSF H1 approved).
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Optional with LM servo motor or with ME/MEL adapter and coupling for market-available servo motors.
Output Shaft Types for KS-EZ Angular Servo Gearmotors
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F – rotating flange shaft with through bushing
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S – hollow smooth shaft with clamping ring (optional with cover)
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G – full smooth shaft
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P – full shaft with keyway
Features of EZ Servo Motors
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Permanent magnet synchronous electric motors.
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Rotary plug connectors with quick-lock mechanism.
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Operating temperature range: -15°C to +40°C.
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Standard protection class IP56, optionally IP66.
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Thermal class F (155°C).
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Electronic nameplate for quick identification of servo motor parameters.
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Lifetime-lubricated rolling bearings with non-contact sealing.
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Radial shaft seals made of FKM VITON.
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Standard radial and axial runout tolerances according to IEC 60072-1.
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Permissible noise levels according to EN 60034-9.
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Not suitable for use in explosive atmospheres.
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Certificates: CE, UKCA, optionally cURus.
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Integrated PTC thermistor; optional PT1000 temperature sensor.
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Black color RAL9005, other RAL colors available on request.
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Optional reference elimination for multiturn absolute encoders.
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With external fan for higher ambient temperature, increased continuous power, or 30% higher torque.
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With 24VDC electromagnetic safety brake.
Encoders in KS-EZ Angular Servo Gearmotors
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Resolver
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Absolute encoder EnDAT 2.1/2.2, inductive / optical, Multiturn / Singleturn
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Optional single-cable OCS solution with EnDat 3.0 absolute encoder (EQI 1131) for cable lengths up to 100 m
Compatibility of KS-EZ Angular Servo Gearmotors with Servo Drives:
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Acopos drives by B&R
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AX5000 drives by Beckhoff
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AKD, S300, S400, S600 drives by KOLLMORGEN
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Sinamics S120 drives by SIEMENS
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Bosch Rexroth drives
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Allen-Bradley drives
Catalogs
442437_en_15_KAT_Servogetriebemotoren.pdf – Stober servo gearmotor catalog in English
serwomotoreduktory_STOBER_26082024.pdf – Inquiry form for Stober servo gearmotors in Polish, German, and English
