Helical Inline Gearbox | Inline Servo Gearbox

inline servo640

Inline Servo Gear Units

STOBER servo inline gear units are unrivaled in their precision and options. Choose from planetary gearing or take advantage of helical gearing. Servo doesn’t have to mean planetary!

These helical inline gearboxes and inline planetary gearboxes can be mounted to any motor with our toleranced motor adapters, or you can add a STOBER motor to them to make a geared motor. These units are assembled in our Maysville, Kentucky facility, shipped in one day, and come with a five-year warranty.

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The P 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.

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

Planetary gearbox

P Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 3 – 100
  • Acceleration torque: 11 – 3,450 Nm
  • Nominal torque: 16 – 2,483 Nm
  • Continuous Input Speed: Up to 6,000 RPM
  • Cyclic Input Speed: Up to 8,000 RPM
  • Torsional Stiffness: Up to 407 Nm/arcmin

Find your right fit!

Planetary series

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
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
    • MEL - clamp coupling that can accommodate larger diameter motor shaft without upsizing to larger gearbox
    • MF - flexible coupling, ideal for thermal length compensation
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Available as a geared motor!
  • Available as a rack and pinion system
K features

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

P Series: PART NUMBER EXAMPLE:

P series part number

P 4 3 1
S G S S
0030
ME
L
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The C 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.

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

inline servo

C Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 2 – 276
  • Acceleration torque: 36 – 8,000 Nm
  • Nominal torque: 35 – 7,000 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 7,000 RPM
  • Torsional Stiffness: Up to 393 Nm/arcmin

Find your right fit!

inline servo

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
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
    • 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!
K features

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

C Series: PART NUMBER EXAMPLE:

C series part number

C 0 0 2
F
0020
ME10
B
EL1
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The PH series offers superior stiffness and accuracy
It offers a reinforced bearing option for applications with higher axial loads.

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

Planetary gearbox

PH Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 4 – 121
  • Acceleration torque: 60 – 7,500 Nm
  • Nominal torque: 36 – 5,000 Nm
  • Continuous Input Speed: Up to 6,000 RPM
  • Cyclic Input Speed: Up to 8,000 RPM
  • Torsional Stiffness: Up to 1,743 Nm/arcmin

Find your right fit!

Planetary series

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 - RAL-9005 black paint
    • Washdown - 316 stainless steel epoxy paint
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
    • MF - flexible coupling, ideal for thermal length compensation
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Available as a geared motor!
  • Available as a rack and pinion system
K features

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

PH Series: PART NUMBER EXAMPLE:

PH series part number

PH 3 3 1
S F S S
0040
ME
L
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The PE series is an attractive option for applications that don’t require the highest precision or smoothness.

Its unique for an economy option because it utilizes helical gearing.

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

Economic Planetary

PE Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 3 – 100
  • Acceleration torque: 13 – 310 Nm
  • Nominal torque: 7 – 160 Nm
  • Continuous Input Speed: Up to 4,000 RPM
  • Cyclic Input Speed: Up to 8,000 RPM
  • Torsional Stiffness: Up to 35 Nm/arcmin

Find your right fit!

Economic Planetary

PE Series: FEATURES

  • Coating Options: options for different environments.
    • Standard - RAL-9005 black paint
    • Washdown - 316 stainless steel epoxy paint
  • Motor Adapter:
    • ME – standard clamp coupling
    • MEL - clamp coupling that can accommodate larger diameter motor shaft without upsizing to larger gearbox
  • Available as a geared motor!
  • Available as a rack and pinion system
K features

PE Series: PART NUMBER EXAMPLE:

PE series part number

PE 3 2 1
S P S S
S 0030
ME
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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.

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

Planetary gearbox series

PHQ Series: TECHNICAL DATA

Power Density:
Price Range:
$ $ $ $ $
  • Total gear ratio range: 5.5 – 600
  • Acceleration torque: 200 – 43,000 Nm
  • Nominal torque: 100 – 25,000 Nm
  • Continuous Input Speed: Up to 4,500 RPM
  • Cyclic Input Speed: Up to 8,000 RPM
  • Torsional Stiffness: Up to 6,269Nm/arcmin

Find your right fit!

Planetary gearbox series

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 - RAL-9005 black paint
    • Washdown - 316 stainless steel epoxy paint
  • Motor Adapter:
    • ME – standard clamp coupling
      • Seal option - MSS1 seal for longer life
    • MF - flexible coupling, ideal for thermal length compensation
    • MB – ServoStop with integrated safety brake
  • Environmental Considerations: ATEX Certified Available for explosive environments
  • Available as a geared motor!
  • Available as a rack and pinion system
K features

PHQ Series: PART NUMBER EXAMPLE:

PHQ series part number

PHQ 4 3 1
S F S S
0055
ME
L

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The document you are looking for is not listed? Hint: Select "all languages".
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Servo Gear UnitsServo Gear Units 304429342022 03EN34.53 MB
Servo Gear Units PHQ RatingsServo Gear Units PHQ Ratings 304429342021 09EN1.09 MB
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Lubricant fill volumeLubricant fill volume 174418712023 10EN2.18 MB
Operating manual C0 - C9 gear units and geared motorsOperating manual C0 - C9 gear units and geared motors 004433652023 07EN3.16 MB
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Replacement parts list helical gear units C603 C613 C703 C713 C803 C813 C903 C913 NReplacement parts list helical gear units C603 C613 C703 C713 C803 C813 C903 C913 N 024408242009 11EN83.03 KB
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Replacement parts list helical gear units C603 C613 C703 C713 C803 C813 C903 C913 NG NFReplacement parts list helical gear units C603 C613 C703 C713 C803 C813 C903 C913 NG NF 024408262009 11EN86.95 KB
Replacement parts list helical gear units C603 C613 C703 C713 C803 C813 C903 C913 G FReplacement parts list helical gear units C603 C613 C703 C713 C803 C813 C903 C913 G F 024408252009 11EN86.68 KB
Replacement parts list helical gear units C602 C612 C702 C712 C802 C812 C902 C912 G FReplacement parts list helical gear units C602 C612 C702 C712 C802 C812 C902 C912 G F 024408222009 11EN78.12 KB
Replacement parts list helical gear units C602 C612 C702 C712 C802 C812 C902 C912 NG NFReplacement parts list helical gear units C602 C612 C702 C712 C802 C812 C902 C912 NG NF 024408232009 11EN79.16 KB
Replacement parts list helical gear units C1014 NG NFReplacement parts list helical gear units C1014 NG NF 014415892009 11EN106.69 KB
Replacement parts list helical gear units C602 C612 C702 C712 C802 C812 C902 C912 NReplacement parts list helical gear units C602 C612 C702 C712 C802 C812 C902 C912 N 024408212009 11EN75.77 KB
Replacement parts list helical gear units C103 C203 C303 C403 C503 QReplacement parts list helical gear units C103 C203 C303 C403 C503 Q 024408192009 11EN77.52 KB
Replacement parts list helical gear units C103 C203 C303 C403 C503 G FReplacement parts list helical gear units C103 C203 C303 C403 C503 G F 024408182009 11EN79.63 KB
Replacement parts list helical gear units C103 C203 C303 C403 C503 NReplacement parts list helical gear units C103 C203 C303 C403 C503 N 024408172009 11EN77.80 KB
Replacement parts list helical gear units C002 C102 C202 C302 C402 C502 NG NFReplacement parts list helical gear units C002 C102 C202 C302 C402 C502 NG NF 024408162009 11EN73.14 KB
Replacement parts list helical gear units C002 C102 C202 C302 C402 C502 QReplacement parts list helical gear units C002 C102 C202 C302 C402 C502 Q 024408152009 11EN69.95 KB
Replacement parts list helical gear units C002 C102 C202 C302 C402 C502 G FReplacement parts list helical gear units C002 C102 C202 C302 C402 C502 G F 024408142009 11EN72.75 KB
Replacement parts list helical gear units C002 C102 C202 C302 C402 C502 NReplacement parts list helical gear units C002 C102 C202 C302 C402 C502 N 024408132009 11EN69.74 KB
Replacement parts list helical gear units C103 C203 C303 C403 C503 NG NFReplacement parts list helical gear units C103 C203 C303 C403 C503 NG NF 024408202009 11EN80.38 KB
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PowerTipsWhite 1

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

Eliminate premature failure
selecting a gearbox
stober application requirements

Aftermarket
Service

Software
Tools

Sales Rep
Network

Emergency
Service

Why Choose STOBER?

Everything we do is built upon the three pillars of quality, delivery and service. This means you can expect superior components made in the U.S.A. to the highest standards of performance and durability. As the world’s toughest gearbox manufacturer, our inline geared motors, inline gear reducers and more are built to last even under the harshest conditions.
 
As a third-generation family-owned company, we will stand by your side with a dedicated support team to assist you whenever you need it. Reach out to us today to learn more about what we have to offer.

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K series part number