STÖBER»Products and Solutions»Helical bevel servo geared motors
Helical bevel servo geared motors

Designed to be absolutely practical: Helical bevel servo geared motors.

In this series, helical bevel gearboxes and synchronous servo motors form a compact unit featuring very convenient installation dimensions and a high power density.

The result is an extremely wide range of efficient design options for the packaging and machine tool industries as well as for automation and robotics. STOBER is an experienced manufacturer for helical bevel servo geared motors and supplies a large number of customers from different industries.

BENEFITS

This coupling-free combination of a K series gear unit and EZ series synchronous servo motor reduces the space requirements and rotating masses, thereby lowering the total weight.

This increases the dynamics and saves costs.

All geared motors in this series of helical bevel servo geared motors feature high-quality helical gearing that guarantees unsurpassed smooth operation and backlash stability.

K gear units paired with EZ motors are a winning combination, especially due to the extremely low weight, a high volume performance and high torque.

Do you design gravity-loaded axes? Learn more about our helical bevel geared motors with redundant brake.

The jointless, torsion-resistant block design and the directly attached EZ motor combine to form a highly rigid drive unit.

The motor shaft and gear unit output are on the same level, which makes the design of your machine or system so much simpler.

Helical bevel servo geared motors: The geared motors of this series of helical bevel servo geared motors are used primarily when applications call for high dynamics, low weight and, above all, a small installation space.

Thanks to the technology that provides robust bearings and high-quality gearing, the gear units of the KS series are extremely durable and tip-resistant.

They can be used in continuous operation without any problems – even at high speed levels.

Extended gear ratio range for a wide range of applications. STOBER has further developed its KS right-angle servo gearbox. In keeping with the motto „Power without Compromise“, it is now offered not only in two- and three-stage versions, but also in a one-stage version.

The advantage of direct attachment: the bevel gear stage, planetary gear unit and EZ motor form a compact unit featuring extremely convenient installation dimensions. Complemented by the square mounting flange, the geared motors can be mounted close together.

TECHNICAL DATA
Power density
Price category
 € € € € €
  • Total ratio: 4 – 381
  • Allowed acceleration torque: 23 – 13200 Nm
  • Backlash: 1.5 – 12 arcmin
  • Efficiency: 94 – 97%

Find your right fit!
Power density
Price category
 € € € € €
  • Total ratio: 4 – 32
  • Allowed acceleration torque: 11 – 65 Nm
  • Backlash: 16 – 25 arcmin
  • Efficiency: 97%

Find your right fit!
Power density
Price category
 € € € € €
  • Total ratio: 2 – 100
  • Allowed acceleration torque: 9,7 – 400 Nm
  • Backlash: 3 – 7 arcmin
  • Efficiency: 93 – 97 %

Find your right fit!
FEATURES
K gearbox feat. EZ motor …  
KL gearbox feat. EZ motor …  
KS gearbox feat. EZ motor …  
APPLICATIONS
Industries and Applications

We get your visions moving – in various industries and markets worldwide.

Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.

Learn more
Industries and Applications

We get your visions moving – in various industries and markets worldwide.

Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.

Learn more
Industries and Applications

We get your visions moving – in various industries and markets worldwide.

Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.

Learn more
Industries and Applications

We get your visions moving – in various industries and markets worldwide.

Using a holistic approach for your specific task, we support you with precisely tailored solutions for drives and automation.

Learn more
DOCUMENTS
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Catalog STOBER compactCatalog STOBER compact074426552025 06EN8.44 MB
Catalog Synchronous servo geared motors EZCatalog Synchronous servo geared motors EZ154424372025 05EN25.03 MB
Catalog Synchronous servo geared motors with redundant brakeCatalog Synchronous servo geared motors with redundant brake024433112024 09EN17.32 MB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Operating manual KS31 - KS71 gearboxes and geared motorsOperating manual KS31 - KS71 gearboxes and geared motors004435062025 05EN2.99 MB
Operating manual KL10 - KL20 gear units and geared motorsOperating manual KL10 - KL20 gear units and geared motors004433632023 07EN1.74 MB
Operating manual K1 - K10 gear units and geared motorsOperating manual K1 - K10 gear units and geared motors004433642023 07EN3.06 MB
Safety instructions for synchronous servo motors synchronous servo geared motorsSafety instructions for synchronous servo motors synchronous servo geared motors004431042018 07EN74.66 KB
Operating manual EZ EZHD EZHP EZS EZM synchronous servo motorsOperating manual EZ EZHD EZHP EZS EZM synchronous servo motors014430322019 05EN441.75 KB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Connection plan EZ_AC on MDS 5000_ SDS 5000 Sin-CosConnection plan EZ_AC on MDS 5000_ SDS 5000 Sin-Cos024423072017 07EN76.48 KB
Connection plan EZ_FA on SDS 4000 compatibleConnection plan EZ_FA on SDS 4000 compatible044423082019 02EN143.66 KB
Connection plan EZ_FG on B&R ACOPOSConnection plan EZ_FG on B&R ACOPOS044423132019 02EN157.61 KB
Connection plan EZ_FM on Beckhoff AX5000Connection plan EZ_FM on Beckhoff AX5000034423182020 02EN197.08 KB
Connection plan EZ_BA on SC6 EnDat 3 OCSConnection plan EZ_BA on SC6 EnDat 3 OCS014431742021 01EN172.22 KB
Connection plan EZ_FR on MDS _ SDS 5000 compatibleConnection plan EZ_FR on MDS _ SDS 5000 compatible044423222017 11EN114.86 KB
Connection plan EZ_FV on B&R ACOPOSMultiConnection plan EZ_FV on B&R ACOPOSMulti024424442019 02EN158.02 KB
Connection plan EZ_FW on Bosch Rexroth IndraDrive CConnection plan EZ_FW on Bosch Rexroth IndraDrive C044424452017 06EN73.02 KB
Connection plan EZ_GB on MDS 5000 SDS 5000 Sin-Cos compatibleConnection plan EZ_GB on MDS 5000 SDS 5000 Sin-Cos compatible014424472017 11EN106.64 KB
Connection plan EZ_BB on SI6 EnDat 3 OCSConnection plan EZ_BB on SI6 EnDat 3 OCS014431752021 01EN172.06 KB
Connection plan EZ_AE on SD6 Sin-CosConnection plan EZ_AE on SD6 Sin-Cos024424512019 02EN166.02 KB
Connection plan EZ_AK on SDS 5007 Sin-CosConnection plan EZ_AK on SDS 5007 Sin-Cos014426702017 07EN61.55 KB
Connection plan EZ_AM on SD6 Sin-CosConnection plan EZ_AM on SD6 Sin-Cos024426742019 02EN152.12 KB
Connection plan EZ_GG on B&R Acopos EnDat 2.2 (Standard)Connection plan EZ_GG on B&R Acopos EnDat 2.2 (Standard)024426772018 06EN128.06 KB
Connection plan EZ_GP on B&R P3 EnDat 2.2 (Standard)Connection plan EZ_GP on B&R P3 EnDat 2.2 (Standard)014430222018 06EN120.97 KB
Connection plan EZ_GV on B&R ACOPOSMulti EnDat 2.2 OCS (Standard)Connection plan EZ_GV on B&R ACOPOSMulti EnDat 2.2 OCS (Standard)004430922018 06EN121.54 KB
Connection plan EZ_GE on CT Unidrive SP (standard)Connection plan EZ_GE on CT Unidrive SP (standard)024425552019 02EN143.52 KB
Connection plan EZ to Allen-Bradley Kinetix 5300 (EZ_HT)Connection plan EZ to Allen-Bradley Kinetix 5300 (EZ_HT)004434762025 07EN170.46 KB
Connection plan EZ to SB6 digital (EZ_BC)Connection plan EZ to SB6 digital (EZ_BC)004433762025 04EN206.91 KB
Connection plan EZ to SDS 5000 (EZ_AA)Connection plan EZ to SDS 5000 (EZ_AA)054423052025 05EN239.57 KB
Connection plan EZ to MDS/SDS 5000 compatible (EZ_FP)Connection plan EZ to MDS/SDS 5000 compatible (EZ_FP)054423212025 05EN202.98 KB
Connection plan EZ to SD6 (EZ_AD)Connection plan EZ to SD6 (EZ_AD)024424502025 05EN231.92 KB
Connection plan EZ to Beckhoff AX8000 9-p (EZ_HO)Connection plan EZ to Beckhoff AX8000 9-p (EZ_HO)004434522024 11EN165.88 KB
Connection plan EZ to Beckhoff AX5000 9-p (EZ_HN)Connection plan EZ to Beckhoff AX5000 9-p (EZ_HN)004434512024 11EN171.06 KB
Connection plan EZ to MDS 5007 (EZ_AF)Connection plan EZ to MDS 5007 (EZ_AF)034426652025 05EN211.87 KB
Connection plan EZ to SDS 5007 (EZ_AJ)Connection plan EZ to SDS 5007 (EZ_AJ)034426682025 05EN213.55 KB
Connection plan EZ to SD6A02 (EZ_AL)Connection plan EZ to SD6A02 (EZ_AL)024426722025 05EN206.73 KB
Connection plan EZ to SD6 compatible (EZ_GR)Connection plan EZ to SD6 compatible (EZ_GR)014430502025 05EN197.75 KB
Connection plan EZ to SI6 compatible (EZ_GS)Connection plan EZ to SI6 compatible (EZ_GS)014430512025 05EN178.94 KB
Connection plan EZ to SC6 (EZ_AU)Connection plan EZ to SC6 (EZ_AU)024430522025 05EN212.73 KB
Connection plan EZ to SC6 compatible (EZ_GT)Connection plan EZ to SC6 compatible (EZ_GT)014430662025 05EN180.46 KB
Connection plan EZ to MDS 5000 (EZ_AB)Connection plan EZ to MDS 5000 (EZ_AB)054423062025 05EN238.47 KB
Connection plan EZ to SB6 OCS (EZ_BD)Connection plan EZ to SB6 OCS (EZ_BD)004433772025 04EN163.78 KB
Connection plan EZ to SB6 Sin/Cos (EZ_BE)Connection plan EZ to SB6 Sin/Cos (EZ_BE)004433782025 04EN237.82 KB
Connection plan motor EZ_AA on SDS5000 Harting specialConnection plan motor EZ_AA on SDS5000 Harting special004434532025 01EN180.03 KB
Connection plan EZ_GY on B&R Acopos P3 EnDat 2.2Connection plan EZ_GY on B&R Acopos P3 EnDat 2.2014430952023 10EN220.08 KB
Connection plan EZ_HH on CT Digitax OCS CustomerConnection plan EZ_HH on CT Digitax OCS Customer004431772023 05EN139.59 KB
Motor Connection Plan EZ_FB to SDS 4000_CompatibleMotor Connection Plan EZ_FB to SDS 4000_Compatible024423092019 02EN139.58 KB
Connection Plan EZ_FJ on Siemens SINAMICS S120Connection Plan EZ_FJ on Siemens SINAMICS S120044423152021 03EN514.12 KB
Connection plan EZ_AH on MDS 5007Connection plan EZ_AH on MDS 5007014426662017 07EN61.80 KB
Connection Plan EZ_GQ on Sinamics S120 EnDat 2.2 (Customer Universal)Connection Plan EZ_GQ on Sinamics S120 EnDat 2.2 (Customer Universal)024430492023 07EN203.49 KB
Connection plan EZ to SI6 digital (EZ_AP)Connection plan EZ to SI6 digital (EZ_AP)034427712025 05EN214.17 KB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Replacement parts list K10 helical bevel gear unitReplacement parts list K10 helical bevel gear unit004434552024 07EN1.33 MB
Replacement parts list MGS gears with pre-stage in mounting position 5Replacement parts list MGS gears with pre-stage in mounting position 5014414912009 11EN50.87 KB
Replacement parts list K9 helical bevel gear unitReplacement parts list K9 helical bevel gear unit014426862018 03EN1.82 MB
Replacement parts list K8 helical bevel gear unitReplacement parts list K8 helical bevel gear unit004426922018 03EN1.86 MB
Replacement parts list K7 helical bevel gear unitReplacement parts list K7 helical bevel gear unit004430642018 03EN1.86 MB
Replacement parts list K6 helical bevel gear unitReplacement parts list K6 helical bevel gear unit004430732018 03EN1.80 MB
Replacement parts list K5 helical bevel gear unitReplacement parts list K5 helical bevel gear unit004431282018 10EN1.73 MB
Replacement parts list K2 K3 K4 helical bevel gear unitReplacement parts list K2 K3 K4 helical bevel gear unit004431312018 10EN1.63 MB
Lubricant fill volumeLubricant fill volume174418712023 10EN2.18 MB
Replacement parts list K1 helical bevel gear unitReplacement parts list K1 helical bevel gear unit004431322018 09EN1.37 MB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Certificate Free of CCCCertificate Free of CCC354420722025 04EN261.03 KB
EU declaration of conformity synchronous servo motors and synchronous geared motors ED EK EZEU declaration of conformity synchronous servo motors and synchronous geared motors ED EK EZ024430892024 03EN73.57 KB
UK declaration of conformity synchronous servo motors and synchronous servo geared motors EZ ED EK LM UK declaration of conformity synchronous servo motors and synchronous servo geared motors EZ ED EK LM 004432972021 10EN71.46 KB
Certificate UL - cURus synchronous servomotors EZ EZS EZM EZHD EZHPCertificate UL - cURus synchronous servomotors EZ EZS EZM EZHD EZHP004430972016 12EN1.44 MB
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