Right-Angle Servo Gearbox Manufacturer

right angle servo640

Right Angle Servo Gearboxes

STOBER’s right angle servo gearbox is unrivaled in its options. Choose from planetary gearing or take advantage of helical gearing. Servo doesn’t have to mean planetary! Our ability to develop customized solutions and our commitment to innovation mean these products can fit into virtually any application across multiple industries. Examples of these right angle geared motors can be found in the food processing, packaging, material handling, automotive manufacturing, printing and beverage industries. Their performance and durability make them ideal across a wide range of situations and tolerances.

If our standard equipment doesn’t fit exactly into a customer’s machines, we also have the expertise and capabilities necessary to create custom components. As the leading right angle gearbox manufacturers, we design and build units that save space and simplify your machinery.

These gear units can be mounted to any motor with our toleranced motor adapters or you can add a STOBER motor on them to make a geared motor. These units are assembled in our Maysville, Kentucky facility, shipped in one day, and come with a 5 year warranty.

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The K/KL series is unparalleled when it comes to right angle options. This servo gear unit’s 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/KL unit features helical bevel gearing, providing smooth motion and optimal efficiency.

K/KL gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

helical bevel gearbox

K/KL Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 4 – 381
  • Acceleration torque: 22 – 13,200 Nm
  • Nominal torque: 15 – 12,000 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 7,000 RPM
  • Torsional Stiffness: Up to 725 Nm/arcmin

Find your right fit!

Planetary series

K/KL Series: FEATURES

  • Outputs:
    • Hollow bore
    • Shaft output (K)
    • Shaft with or without key (KL)
    • Single or double wobble free bushing
  • Housing Styles:
    • Output flange (Round for K, Square for KL)
    • 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
  • Motor Adapter:
    • MQ - standard clamp coupling for KL
    • ME – standard clamp coupling for K
      • Seal option - MSS1 seal for longer life
      • Peak torque booster - pinion securing element for shock loads, increasing peak torque up to 80%
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments for K Series
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
K features

K_EZ Geared Motor by STOBER Drives Click play to begin and ? icon for controls and navigation assistance

K/KL Series: PART NUMBER EXAMPLE:

K series part number

K 1 0 2
V NG
0040
ME10
B
EL1
loader-icon

The PKX series combines our planetary P series with a KX series input.

This servo gear unit features a compact design and has superior stiffness and precision compared to a K series unit.

PKX gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

Servo Planetary gearbox

PKX Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 3 – 300
  • Acceleration torque: 21 – 3,300 Nm
  • Nominal torque: 15 – 2,387 Nm
  • Continuous Input Speed: Up to 3,500 RPM
  • Cyclic Input Speed: Up to 6,000 RPM
  • Torsional Stiffness: Up to 393 Nm/arcmin

Find your right fit!

Planetary series

PKX 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
  • Motor Adapter:
    • MF - flexible coupling, ideal for thermal length compensation
      • Seal option - MSS1 seal for longer life
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
PKX features

PKX Series: PART NUMBER EXAMPLE:

PKX series part number

P 2 3 1
S P S S
0040
MF
F
EL1
KX301VF
0010
loader-icon

The KS series gives the benefits of helical bevel gearing while still having low backlash.

You can choose from three different output options, including shaft, flange, and hollow bore.

KS gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

helical bevel gear reducer

KS Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 6 – 200
  • Acceleration torque: 90 – 400 Nm
  • Nominal torque: 60 – 250 Nm
  • Continuous Input Speed: Up to 4,500 RPM
  • Cyclic Input Speed: Up to 6,000 RPM
  • Torsional Stiffness: Up to 42 Nm/arcmin

Find your right fit!

Planetary series

KS Series: FEATURES

  • Outputs:
    • Plain shaft
    • Shaft with feather key
    • Flanged hollow bore
    • Shrink ring
  • Motor Adapter:
    • ME – standard clamp coupling
    • MEL - clamp coupling that can accommodate larger diameter motor shaft without upsizing to larger gearbox
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
KS features

KS Series: PART NUMBER EXAMPLE:

KS series part number

KS 4 0 2
P F
0060
ME
L
EL1
loader-icon

The F series offers compact size and flexibility.

This servo gear unit uses helical bevel gearing for optimal efficiency.

Choose from a variety of housing styles and output options.

F gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

offset gearbox

F Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 4.3 – 552
  • Acceleration torque: 78 – 1,100 Nm
  • Nominal torque: 69 – 1,100 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 7,000 RPM
  • Torsional Stiffness: Up to 77.4 Nm/arcmin

Find your right fit!

Planetary series

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
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
      • Peak torque booster - pinion securing element for shock loads, increasing peak torque up to 80%
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
F features

F Series: PART NUMBER EXAMPLE:

F series part number

F 1 0 2
V F
0043
ME10
B
EL1
loader-icon

The PHK series combines our planetary PH series with a K series input.

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

PHK gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

servo gearbox

PHK Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 16 – 561
  • Acceleration torque: 277 – 7,207 Nm
  • Nominal torque: 210 – 5,000 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 7,000 RPM
  • Torsional Stiffness: Up to 1,210 Nm/arcmin

Find your right fit!

Planetary series

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 - RAL-9005 black paint
    • Washdown - 316 stainless steel epoxy paint
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
      • Peak torque booster - pinion securing element for shock loads, increasing peak torque up to 80%
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
PHK features

PHK Series: PART NUMBER EXAMPLE:

PHK series part number

PH 5 3 1
S F S S
0040
K102VF
0040
ME10
EL1
loader-icon

The PHKX series combines our planetary PH series with a KX series input.

This servo gear unit features a compact design and has superior stiffness and precision compared to a K series unit.

PHKX gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

Planetary gear uunit

PHKX Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 4 – 300
  • Acceleration torque: 60 – 2,100 Nm
  • Nominal torque: 36 – 1,557 Nm
  • Continuous Input Speed: Up to 3,500 RPM
  • Cyclic Input Speed: Up to 6,000 RPM
  • Torsional Stiffness: Up to 489 Nm/arcmin

Find your right fit!

Planetary series

PHKX 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 - RAL-9005 black paint
    • Washdown - 316 stainless steel epoxy paint
  • Motor Adapter:
    • MF - flexible coupling, ideal for thermal length compensation
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
  • Available as a rack and pinion system
PHKX features

PHKX Series: PART NUMBER EXAMPLE:

PHKX series part number

PH 3 3 1
S F S S
0040
KX301VF
0010
MF
EL1
loader-icon

The PHQK series combines our planetary PHQ series with a K series input.

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

PHQK gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

 right angle servo gear unit

PHQK Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 22 – 2,242
  • Acceleration torque: 316 – 43,000 Nm
  • Nominal torque: 264 – 21,772 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 7,000 RPM
  • Torsional Stiffness: Up to 4,664 Nm/arcmin

Find your right fit!

Planetary series

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 - RAL-9005 black paint
    • Washdown - 316 stainless steel epoxy paint
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
      • Peak torque booster - pinion securing element for shock loads, increasing peak torque up to 80%
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
PHQK features

PHQK Series: PART NUMBER EXAMPLE:

PHQK series part number

PHQ 5 3 1
S F S S
0030
K523VF
0040
ME10
EL1
loader-icon

The PK series combines our planetary P series with a K series input.

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

PK gearboxes are available as compact right angle servo geared motors or they can be mounted to any motor with our toleranced motor adapter.

right angle gearbox

PK Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 12 – 561
  • Acceleration torque: 200 – 3,105 Nm
  • Nominal torque: 120 – 2,100 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 7,000 RPM
  • Torsional Stiffness: Up to 305 Nm/arcmin

Find your right fit!

Planetary series

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
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
      • Peak torque booster - pinion securing element for shock loads, increasing peak torque up to 80%
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Mounting Positions:
    • EL1, 2, 3, 4, 5, or 6
  • Available as a geared motor!
PK features

PK Series: PART NUMBER EXAMPLE:

PK series part number

P 5 3 1
S P S S
0030
K102VF
0040
ME10
F
EL1

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PowerTipsWhite 1

STOBER’s Power Tips video series shares best practices and helpful answers to frequently asked questions. 

helical gearboxes
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stober application requirements

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Why Should You Choose STOBER?

When customers need a 90-degree angle gearbox that can stand up to their heaviest and most demanding applications, they choose STOBER. That’s because we’ve cultivated a reputation over the last 85-plus years as the world’s toughest gearbox manufacturer. Ever since our inception, we have sought to bring the highest levels of quality and innovation to the industry. We’ve never stopped working to improve the offerings we bring to market, never settling for what was good enough at any given time. To learn more about our right angle gearheads or anything else we have to offer, reach out and talk to us today.

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