ServoStop Servomotor Brakes

servo geared motors

Servo Motor Safety Brake

STOBER’s servo gear units can be paired with our ServoStop, an integrated safety brake. It’s ideal for vertical applications and provides redundant braking. It prevents slipping or falls, even when the motor is removed.

As the manufacturer of the world’s toughest gear boxes, you can count on us to equip servo motors with brakes that deliver the highest levels of performance and reliability. Units featuring this servo safety brake perform critical functions across a number of industries, including automotive manufacturing and aerospace. Our in-house expertise and history of innovation mean we can design fully customized solutions for your particular applications, as well.

The ServoStop external servo motor brake provides dynamic braking during power failures or emergencies, helping your operations achieve maximum safety conditions. It fits all standard servo motors and allows for dismounting of the motor even while it is engaged, meaning installation and maintenance is as simple and convenient as it can be. Our servo motor holding brake meets the EN ISO 13849 safety standard, so you can feel secure about adding it to your equipment. This unit also is available with manual hand release.

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The C series can be integrated with a ServoStop safety brake. This series utilizes helical gearing for up to 97% efficiency.

Choose the housing style that fits your application – round or square flanges, tapped holes, or foot mounting.

inline servo with MB brake

C Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 47 – 4,800 Nm
  • Nominal Brake Torque: 8 – 160 Nm
  • Ratio: 2 – 70
  • Backlash: 10 – 20 arcmin
  • Efficiency: 97%

Find your right fit!

inline servo with servostop brake

C Series: FEATURES

  • Housing Styles:
    • Round output flange
    • Pitch circle diameter tapped holes
    • Foot mounting
    • Square output flange
  • Package Options: options for different environments. A package includes coating, lubrication, and output material
    • Standard Duty - RAL-9005 black paint, Synthetic Exxon Mobil SHC 629, carbon steel output
    • Corrosion Resistant Duty - 316 stainless steel epoxy paint, Exxon Mobil SHC 630 or 600XP220 Mineral, and stainless steel output
    • Food Duty - 316 stainless steel epoxy food duty paint with anti-microbial clear coat, Exxon Mobil SHC CIBUS 220, and stainless steel output
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

K features

C Series with MB Brake by STOBER Drives Click play to begin and ? icon for controls and navigation assistance

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The F series can be integrated with a ServoStop safety brake. This series offers compact size and flexibility, as well as optimal efficiency due to the helical bevel gearing. Choose from a variety of housing styles and output options.

offset gearbox with MB brake

F Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 100 – 1,100 Nm
  • Nominal Brake Torque: 8 – 160 Nm
  • Ratio: 4.3 – 140
  • Backlash: 5 – 11 arcmin
  • Efficiency: 97%

Find your right fit!

Planetary series with servostop brake

F Series: FEATURES

  • Outputs:
    • Hollow bore
    • Shaft
    • Shrink ring
    • Single or double wobble free bushing
  • Housing Styles:
    • Output flange
    • Pitch circle diameter tapped holes
    • Foot mounting
  • Package Options: options for different environments. A package includes coating, lubrication, and output material
    • Standard Duty - RAL-9005 black paint, Synthetic Exxon Mobil SHC 629, carbon steel output
    • Corrosion Resistant Duty - 316 stainless steel epoxy paint, Exxon Mobil SHC 630 or 600XP220 Mineral, and stainless steel output
    • Food Duty - 316 stainless steel epoxy food duty paint with anti-microbial clear coat, Exxon Mobil SHC CIBUS 220, and stainless steel output
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

F features
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The K series can be integrated with a ServoStop safety brake. This series is unparalleled when it comes to right angle options. Its unique design allows you to use a variety of outputs, including shaft, hollow bore, shrink rings, and bushings.

Housing options include flange, feet, and torque arm

The K unit features helical bevel gearing, providing smooth motion and optimal efficiency.

helical bevel gearbox with MB brake

K/KL Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 93 – 7,700 Nm
  • Nominal Brake Torque: 8 – 160 Nm
  • Ratio: 4 – 99
  • Backlash: 1.5 – 12 arcmin
  • Efficiency: 96 – 97%

Find your right fit!

Planetary series with MB

K/KL Series: FEATURES

  • Outputs:
    • Hollow bore
    • Shaft output
    • Single or double wobble free bushing
  • Housing Styles:
    • Round Output flange
    • Pitch circle diameter tapped holes
    • Foot mounting
    • Torque arm bracket
  • Package Options: options for different environments. A package includes coating, lubrication, and output material
    • Standard Duty - RAL-9005 black paint, Synthetic Exxon Mobil SHC 629, carbon steel output
    • Corrosion Resistant Duty - 316 stainless steel epoxy paint, Exxon Mobil SHC 630 or 600XP220 Mineral, and stainless steel output
    • Food Duty - 316 stainless steel epoxy food duty paint with anti-microbial clear coat, Exxon Mobil SHC CIBUS 220, and stainless steel output
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

K features
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The P series can be integrated with a ServoStop safety brake. This series features planetary gearing, providing unsurpassed smoothness and precision.

It is incredibly efficient, has low backlash, and runs quiet.

Plus, you can choose from several bearing options to handle radial or axial loads, optimizing your machine design.

Planetary gearbox with MB brake

P Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 109 – 3,000 Nm
  • Nominal Brake Torque: 8 – 300 Nm
  • Ratio: 3 – 80
  • Backlash: 3 – 4 arcmin
  • Efficiency: 95 – 97%

Find your right fit!

Planetary series with servostop brake

P Series: FEATURES

  • Output Shaft:
    • Plain shaft
    • Feather key
  • Bearings: Options for axial or radial loads
    • Standard – ball bearing ideal for some axial and radial load capacity
    • Double row angular contact bearing – ideal for high axial loads
    • Cylindrical roller bearing – ideal for radial loads
  • Backlash:
    • Standard
    • Reduced - optimized gear hardening ensures smoothness of motion and minimizes velocity ripple
  • Package Options: options for different environments. A package includes coating, lubrication, and output material
    • Standard Duty - RAL-9005 black paint, Synthetic Exxon Mobil SHC 629, carbon steel output
    • Food Duty - 316 stainless steel epoxy paint with anti-microbial clear coat, Exxon Mobil SHC CIBUS 220, and stainless steel output
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

K features
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The PH series can be integrated with a ServoStop safety brake. This series offers superior stiffness and accuracy.

It offers a reinforced bearing option for applications with higher axial loads.

Planetary gearbox with servostop brake

PH Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 144 – 7,500 Nm
  • Nominal Brake Torque: 8 – 300 Nm
  • Ratio: 4 – 121
  • Backlash: 3 arcmin
  • Efficiency: 90 – 96%

Find your right fit!

Planetary series with MB brake

PH Series: FEATURES

  • Bearings: Options for axial or radial loads
    • Standard – ball bearing ideal for some axial and radial load capacity
    • Reinforced bearing – ideal for high axial loads
  • Backlash:
    • Standard
    • Reduced - optimized gear hardening ensures smoothness of motion and minimizes velocity ripple
  • Coating Options: options for different environments.
    • Standard Duty - RAL-9005 black paint
    • Washdown Duty - 316 stainless steel epoxy paint
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

K features
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The PHK series can be integrated with a ServoStop safety brake. This series combines our planetary PH series with a K series input.

This gear unit features quiet operation, higher ratios, and higher input speeds compared to a KX series unit.

servo gearbox with MB brake

PHK Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 320 – 7,500 Nm
  • Nominal Brake Torque: 8 – 160 Nm
  • Ratio: 16 – 466
  • Backlash: 3.5 – 4.5 arcmin
  • Efficiency: 92 – 93%

Find your right fit!

Planetary series with servostop brake

PHK Series: FEATURES

  • Bearings: Options for axial or radial loads
    • Standard – ball bearing ideal for some axial and radial load capacity
    • Reinforced bearing – ideal for high axial loads
  • Coating Options: options for different environments.
    • Standard Duty - RAL-9005 black paint
    • Washdown Duty - 316 stainless steel epoxy paint
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

PHK features
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The PHQ can be integrated with a ServoStop safety brake. The PHQ series features four planetary gears, making it the most powerful gearbox on the market.

It provides smooth operation while producing huge amounts of torque.

Planetary gearbox series with MB brake

PHQ Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 767 – 22,000 Nm
  • Nominal Brake Torque: 8 – 300 Nm
  • Ratio: 18 – 420
  • Backlash: 3 arcmin
  • Efficiency: 90 -93%

Find your right fit!

Planetary gearbox series with servostop brake

PHQ Series: FEATURES

  • Bearings: Options for axial or radial loads
    • Standard – ball bearing ideal for some axial and radial load capacity
    • Reinforced bearing – ideal for high axial loads
  • Backlash:
    • Standard
    • Reduced - optimized gear hardening ensures smoothness of motion and minimizes velocity ripple
  • Coating Options: options for different environments.
    • Standard Duty - RAL-9005 black paint
    • Washdown Duty - 316 stainless steel epoxy paint
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

K features
loader-icon

The PHQK can be integrated with a ServoStop safety brake. This series series combines our planetary PHQ series with a K series input.

This gear unit features the highest acceleration torque and torque density.

 right angle servo gear unit with MB brake

PHQK Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 425 – 43,000 Nm
  • Nominal Brake Torque: 8 – 160 Nm
  • Ratio: 22 – 591
  • Backlash: 3.5 – 4 arcmin
  • Efficiency: 92 – 93%

Find your right fit!

Planetary series with MB brake

PHQK Series: FEATURES

  • Bearings: Options for axial or radial loads
    • Standard – ball bearing ideal for some axial and radial load capacity
    • Reinforced bearing – ideal for high axial loads
  • Coating Options: options for different environments.
    • Standard Duty - RAL-9005 black paint
    • Washdown Duty - 316 stainless steel epoxy paint
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

PHQK features
loader-icon

The PK series can be integrated with a ServoStop safety brake. This series combines our planetary P series with a K series input.

This gear unit offers quieter operation, higher input speeds, and higher ratios compared to a KX unit.

right angle gearbox with MB brake

PK Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Acceleration Torque: 200 – 2,700 Nm
  • Nominal Brake Torque: 8 – 100 Nm
  • Ratio: 12 – 390
  • Backlash: 3.5 – 5 arcmin
  • Efficiency: 94%

Find your right fit!

Planetary series with servostop brake

PK Series: FEATURES

  • Output Shaft:
    • Plain shaft
    • Feather key
  • Bearings: Options for axial or radial loads
    • Standard – ball bearing ideal for some axial and radial load capacity
    • Double row angular contact bearing – ideal for high axial loads
    • Cylindrical roller bearing – ideal for radial loads
  • Package Options: options for different environments. A package includes coating, lubrication, and output material
    • Standard Duty - RAL-9005 black paint, Synthetic Exxon Mobil SHC 629, carbon steel output
    • Food Duty - 316 stainless steel epoxy paint with anti-microbial clear coat, Exxon Mobil SHC CIBUS 220, and stainless steel output
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Input Voltage:
    • 24V
    • 104V
  • Rectifier – convert AC voltage into DC Voltage
    • Only required for 104 Volts
  • Manual Release:
    • Available with manual hand release
  • Connection Type for Power Source:
    • Terminal box – for hard wiring
    • Connector – for cable connection
  • Air Gap Monitoring:
    • With proximity switch IP54
    • With proximity switch IP65

Find your right fit!

PK features

Featured Videos

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The document you are looking for is not there? Tip: Select “All languages”.
TitleVersionIDDateSize
Catalog ServoStop servo gear units with brakeCatalog ServoStop servo gear units with brake024432342023 04EN15.15 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 there? Tip: Select “All languages”.
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Operating manual MB23 - MB53 ServoStop Motor adapter with brakeOperating manual MB23 - MB53 ServoStop Motor adapter with brake034432872024 01EN6.39 MB
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STOBER’s Power Tips video series shares best practices and helpful answers to frequently asked questions. 

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Why You Should Choose STOBER

As a third-generation family-owned business, we understand how critical it is to have the right partners for your operations. Working with us means you will receive superior components precision-engineered to withstand the harshest environments and deliver the longest lifespan.
 
We’re also proud to manufacture all our products right here in the United States, meaning you can enjoy fast turnarounds on special or emergency orders. Our commitment to quality includes rigorous testing on every part using the latest technologies. Fewer than 0.25% of our units need to be returned, which speaks to our dedication.

Choosing our products means you will have a dedicated team focused on your needs, providing all the support and service to help you succeed. With more than 85 years of experience and a reputation as the world’s toughest gearbox manufacturer, there’s no better choice than STOBER. Get in touch with us today to learn more.

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