Servo Mount Gearheads

HPG-R Helical Planetary Gearbox High Torque Quiet Operation

Helical gear design Harmonic Planetary gearbox delivering higher torque and quieter operation than standard HPG with cross roller output bearing in 3 frame sizes ratios 3:1 to 10:1 and peak torque 15 to 400 Nm

ModelHPG-R
SeriesHPG-R Helical Series
Global Stock Network Custom Gear Ratios Application Engineering STO Safety Compliant
HPG-R product image 1
HPG-R
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Product Overview

The HPG-R uses helical gearing combining quiet operation with higher torque compared to standard HPG series. Cross roller output bearing provides direct load support. Available in 3 frame sizes 14 20 and 32 with ratios 3:1 to 10:1 peak torque 15 to 400 Nm backlash less than 3 arc-min optional less than 1 arc-min. Low backlash for life through continuous backlash compensation.

The HPG-R is a fully integrated rotary actuator combining servo motor, harmonic gear reducer, encoders, servo electronics, and compact mechanical packaging in a single assembly.

📐
Outer Diameter
⚖️
Weight
🔩
Hollow Shaft
18 mm
💪
Max Torque
🔄
Max Speed
⚙️
Gear Ratios
🎯
Output Type
Integrated robot joint module

Servo Mount Gearhead Architecture

Harmonic Planetary and Harmonic Drive gearheads mount directly to standard servo motors using a flange or shaft input interface. The Quick Connect coupling system allows motor exchange without realignment. The cross roller output bearing provides direct load support.

Quick Connect Motor Mount

Rapid motor exchange without realignment tools, compatible with most servo motor flange standards.

🎯

Low Backlash

Less than 3 arc-min standard. Less than 1 arc-min available as an option on most series.

🔩

Cross Roller Output

Integrated cross roller bearing supports radial, axial, and moment loads without additional bearings.

📡

Continuous Compensation

Continuous backlash compensation maintains low backlash throughout the gear life.

🔄

High Torsional Stiffness

High stiffness minimises compliance in the drive train for precise dynamic positioning.

🔧

Grease Lubricated for Life

No maintenance lubrication required over the operating life of the gearhead.

Typical Applications

The HPG-R suits servo motor driven robot joints, precision index tables, semiconductor wafer stages, laser beam steering, AGV and AMR propulsion drives, and any precision motion application requiring a servo mount gearhead with low backlash and high moment stiffness.

Key Specifications

Critical performance parameters at a glance

📊
Helical gearing quieter and higher torque than standard spur HPG
Gear Technology
📊
3 sizes: 14 20 32 (60-120mm)
Available Frame Sizes
📊
3:1 to 10:1
Gear Ratio Range
📊
15 Nm to 400 NmNm
Peak Torque Range
📊
Less than 3 arc-min standard less than 1 arc-min optionalarc-min
Backlash
📊
HPG-R helical gearing quieter higher torque ratios 3-10 vs HPG ratios 3-50
vs HPG Standard
📊
15Nm
Size 14 Min Peak Torque
📊
6000rpm
Size 14 Max Input Speed

Technical Specifications

Overview

Gear Technology
Helical gearing quieter and higher torque than standard spur HPG
Available Frame Sizes
3 sizes: 14 20 32 (60-120mm)
Gear Ratio Range
3:1 to 10:1
Peak Torque Range
15 Nm to 400 Nm Nm
Backlash
Less than 3 arc-min standard less than 1 arc-min optional arc-min
vs HPG Standard
HPG-R helical gearing quieter higher torque ratios 3-10 vs HPG ratios 3-50

Size 14 Performance

Size 14 Min Peak Torque
15 Nm
Size 14 Max Input Speed
6000 rpm

Size 32 Performance

Size 32 Max Peak Torque
400 Nm
Size 32 Max Momentary Torque
650 Nm
Size 32 Max Rated Torque L50
149 Nm

Product Attributes

Product Type
Helical Planetary Gearbox Quiet High Torque
Gear Type
Helical gearing quieter operation
Ratio Range
3:1 to 10:1 only
Peak Torque
15 to 400 Nm
vs HPG Standard
Helical quieter higher torque narrow ratio range
Manufacturer
Harmonic Drive LLC

Industrial Applications

These servo-mount gearheads are used where motor compatibility, compact packaging, and precision motion transmission are needed in a complete gearbox format.

⚙️

Servo Axis Reduction

Pairs with servo motors in factory automation, robotics, and machinery where reduced speed and increased output torque are required.

Servo motorTorque multiplicationAutomation
🏭

Packaging & Converting

Supports motion axes in packaging, labelling, and converting systems where compact drivetrains and stable positioning are essential.

PackagingConvertingPrecision
🤖

Robot Peripheral Axes

Used on auxiliary axes, end-of-arm devices, and support mechanisms that need precise servo-driven output motion.

RoboticsPeripheral motionCompact
📍

Index Tables & Feed Systems

Works well in indexing mechanisms, feeders, and transfer systems where repeatable angular motion is important.

IndexingFeed systemsRepeatability
🧰

OEM Motion Modules

Simplifies motion subsystem design for OEMs needing a packaged reducer with predictable motor-mount integration.

OEMPackaged reducerMotor mount
🔬

Precision Equipment

Supports analytical, optical, and specialty machinery requiring compact servo-ready reduction stages.

PrecisionOpticsCompact
Customization Available

Factory Modification & Custom Sourcing

This product supports custom configurations and equivalent sourcing

Available Modifications

  • Torque and speed ratio customization
  • Mounting interface modifications
  • Connector and wiring specifications
  • Housing and enclosure options

Sourcing Options

  • Standard product sourcing
  • Equivalent product identification
  • Replacement part sourcing
  • Volume pricing (MOQ may apply)

Request Pricing & Availability

Submit an RFQ for standard products, custom configurations, or equivalent alternatives

Expert Answers

Frequently Asked Questions

Technical answers sourced from engineering specifications and integration guides.

The HPG-R uses helical gearing for quieter operation and higher torque than the standard HPG. Available in 3 frame sizes: 14, 20, and 32 mm with ratios 3 to 10.

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