Right-angle planetary gear units
Planetary gear units paired with highly efficient helical bevel gear units.

When the motor gets in your way: Right-angle planetary gear units.

Our premium planetary gear units paired with our high efficiency helical bevel gear units. The result: STOBER right-angle planetary gear units!

BENEFITS
The motor as a disturbance contour

If the motor in coaxial design represents an interference contour, the combination of a STOBER planetary gear unit with a bevel gear unit is the best choice for the highest demands on dynamics, backlash stability and robustness.

Performat. Precise. Precise fit. Around the corner!

PK: For high precision

PK gear units are available either as compact servo planetary angular gearmotors for direct mounting or can be attached to all common synchronous servomotors via corresponding adapters.

PKX: High precision for small installation spaces

The PKX series is the compact variant of the PK series: equally precise, also with high-quality helical gearing, exceptionally stable and perfect for tight installation situations.

PKX gears are available as either compact servo or direct-mount lean planetary angle gearmotors.

Maximum flexibility: The gear units can be attached to all common synchronous servomotors via corresponding adapters.

PHK: For high performance

PHK series features a high-performance right-angle servo drive unit with high-quality helical gearing and very high torsional and tilting rigidity.

Compared to the PHKX series, the PHK drives are ideal for larger gear ratios.

PHK drives are available either as compact servo planetary angular drives for direct mounting or can be attached to all common synchronous servomotors via corresponding adapters.

PHKX: Hohe Performance für kleine Einbauräume

The PHKX series is the compact version of the PHK series: also very torsionally and tilt-resistant, absolutely high-performance, with high-quality helical gearing and perfect for confined installation situations.

PHKX drives are available either as compact servo planetary angular gearmotors for direct mounting or can be attached to all common synchronous servomotors via corresponding adapters.

PHQK: Quattro Power for highest power density

Our innovative 4-planet servo right-angle gearbox with high-quality helical gearing and very high torsional and tilting rigidity.

The same applies to the Quattro Power transmission – it is ideal for large gear ratios.

PHQK drives are available either as compact servo planetary angular drive motors for direct mounting or can be attached to all common synchronous servo motors via corresponding adapters.

TECHNICAL DATA
PK SERIES
Power density:
Price category:
  • Total ratio: 12 – 561
  • Allowed acceleration torque: 200 – 3105 Nm
  • Backlash: 1.5 – 5 arcmin
  • Efficiency: 94%

Find your right fit!
PKX SERIES
Power density:
Price category:
  • Total ratio: 3 – 300
  • Allowed acceleration torque: 21 – 3300 Nm
  • Backlash: 2 – 8.5 arcmin
  • Efficiency: 94 – 96%

Find your right fit!
PHK SERIES
Power density:
Price category:
  • Total ratio: 16 – 561
  • Allowed acceleration torque: 277 – 7500 Nm
  • Backlash: 1.5 – 4.5 arcmin
  • Efficiency: 92 – 93%

Find your right fit!
PHKX SERIES
Power density:
Price category:
  • Total ratio: 4 – 300
  • Allowed acceleration torque: 60 – 2300 Nm
  • Backlash: 1 – 6 arcmin
  • Efficiency: 92 – 95%

Find your right fit!
PHQK SERIES
Power density:
Price category:
  • Total ratio: 22 – 2242
  • Allowed acceleration torque: 316 – 43000 Nm
  • Backlash: 1.5 – 4 arcmin
  • Efficiency: 90 – 93%

Find your right fit!
FEATURES
PK SERIES
  • Shaft: Solid shaft with or without feather key
  • Bearing: Standard, axial or radial reinforced
  • Backlash: Standard or reduced
  • Mounting position: Any
  • Lubricants and maintenance:
    • Synthetic lubricant CLP HC ISO VG 150
    • Lubricated for life and maintenance-free
  • Paint: RAL 9005 Jet black
  • Recommended motor for direct attachment: Particularly efficient in combination with a STOBER EZ series motor
PKX SERIES
  • Shaft: Solid shaft with or without feather key
  • Bearing: Standard, axial or radial reinforced
  • Backlash: Standard or reduced
  • Mounting position: Any
  • Lubricants and maintenance:
    • Synthetic lubricant CLP HC ISO VG 150
    • Lubricated for life and maintenance-free
  • Paint: RAL 9005 Jet black
  • Motor adapter:
    • FlexiAdapt (MF) with bellow coupling and integrated thermal length compensation
  • Recommended motors for direct attachment: Particularly efficient in combination with STOBER EZ or LM series motors
PHK SERIES
  • Shaft: Flange shaft
  • Bearing: Standard or reinforced (PH3K – PH5K)
  • Backlash: Standard or reduced
  • Mounting position: Any
  • Lubricants and maintenance:
    • Synthetic lubricant CLP HC ISO VG 150
    • Lubricated for life and maintenance-free
  • Paint: RAL 9005 Jet black
  • Recommended motor for direct attachment: Particularly efficient in combination with a STOBER EZ series motor
PHKX SERIES
  • Shaft: Flange shaft
  • Bearing: Standard or reinforced (PH3K – PH5K)
  • Backlash: Standard or reduced
  • Mounting position: Any
  • Lubricants and maintenance:
    • Synthetic lubricant CLP HC ISO VG 150
    • Lubricated for life and maintenance-free
  • Paint: RAL 9005 Jet black
  • Motor adapter:
    • FlexiAdapt (MF) with bellow coupling and integrated thermal length compensation
  • Recommended motor for direct attachment: Particularly efficient in combination with a STOBER EZ series motor
PHQK SERIES
  • Shaft: Flange shaft
  • Bearing: Standard or reinforced (PHQ4K – PHQ5K)
  • Backlash: Standard or reduced
  • Mounting position: Any
  • Lubricants and maintenance:
    • Synthetic lubricant CLP HC ISO VG 150
    • Lubricated for life and maintenance-free
  • Paint: RAL 9005 Jet black
  • Recommended motor for direct attachment: Particularly efficient in combination with a STOBER EZ series motor
APPLICATIONS
Horizontal machining units
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.

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Portal milling
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.

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Welding robots
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.

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DOCUMENTS
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Catalog STOBER compactCatalog STOBER compact 044426552022 10EN10.24 MB
Catalog ServoStop servo gear units with brakeCatalog ServoStop servo gear units with brake 014432342022 03EN12.67 MB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Safety instructions for gear unitsSafety instructions for gear units 004431082018 07EN70.76 KB
Safety instructions for explosion-proof gear unitsSafety instructions for explosion-proof gear units 004431092018 07EN69.50 KB
Operating manual PK PKX PHK PHKX PHQK KS KL gear units and geared motorsOperating manual PK PKX PHK PHKX PHQK KS KL gear units and geared motors 004431502019 10EN1.69 MB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
Lubricant fill volumeLubricant fill volume 164418712021 08EN1.23 MB
The document you are looking for is not listed? Hint: Select "all languages".
TitleVersionIDDateLanguageSize / Type
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
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 EZ 014430892020 11EN37.12 KB
EU Declaration of conformity synchron motors LMEU Declaration of conformity synchron motors LM 024430822020 11EN39.12 KB
UK declaration of incorporation gear unitsUK declaration of incorporation gear units 004432992021 10EN74.12 KB
Declaration of Incorporation gear unitsDeclaration of Incorporation gear units 004427182015 04EN48.83 KB
SERVICES
Consulting & support
Technology Consulting

Take advantage of the expertise of our application engineers in the Sales Centers or contact our first level support.

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Tools & software
SERVOsoft®

With SERVOsoft®, you have a tool at your fingertips that lets you design your drive systems with precise scaling in just a few steps. Electrical as well as mechanical design, and simple and fast at the same time.

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STOBER Configurator

With the intuitive STOBER product configurator, you can filter, compare, save and share the right drive solutions with ease.

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STOBER CAD

Are you looking for CAD data? With the STOBER CAD tool, the drawings you need are ready for download in just a few clicks.

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Service, replacement & repair
Service Network

STOBER is present in over 40 countries worldwide with 10 subsidiaries and 80 service partners. No matter where, no matter when, we’re always at your service and on the move!

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Replacement & Repair

Do you need competent help with replacement parts, replacement drives, repairs and retrofitting? Feel free to contact us! We also offer a 24-hour hotline for urgent cases.

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24-hour emergency number for urgent cases.
We are here for you.

Planetary gear units for highly dynamic applications.

“We work with STOBER because the wide selection of planetary gear units always gives us the right solution for all kinds of different servo tasks. We also appreciate the good advice and support and especially how quick it is. Working together with STOBER is always very enjoyable and productive.”

– Uwe Biermann, Mechanical Design Feed Technology, Schuler Pressen GmbH

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.

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