Servo Mount Gearheads

HPG-RA Right Angle Harmonic Planetary Precision Gearbox

High torque right angle Harmonic Planetary precision gearbox with cross roller output bearing continuous backlash compensation in 3 frame sizes with peak torque 150 to 2200 Nm and ratios 5:1 to 50:1

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

The HPG-RA delivers high torque and accuracy in compact right angle design with continuous backlash compensation and large cross roller output bearing for direct load support. Available in 3 frame sizes sizes 32 50 and 65 with ratios 5:1 to 50:1 peak torque 150 to 2200 Nm backlash less than 3 arc-min. Higher torque than HPN-RA value series.

The HPG-RA 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-RA 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

📊
Right angle 90 degree spiral bevel input planetary output
Configuration
📊
3 sizes: 32 50 65 (120-230mm)
Available Frame Sizes
📊
5:1 to 50:1
Gear Ratio Range
📊
150 Nm to 2200 NmNm
Peak Torque Range
📊
Less than 3 arc-minarc-min
Backlash
📊
Large cross roller bearing output flange for direct load support
Output Bearing
📊
HPG-RA precision higher torque 150-2200Nm vs HPN-RA value 9-752Nm
vs HPN-RA
📊
150Nm
Size 32 Min Peak Torque

Technical Specifications

Overview

Configuration
Right angle 90 degree spiral bevel input planetary output
Available Frame Sizes
3 sizes: 32 50 65 (120-230mm)
Gear Ratio Range
5:1 to 50:1
Peak Torque Range
150 Nm to 2200 Nm Nm
Backlash
Less than 3 arc-min arc-min
Output Bearing
Large cross roller bearing output flange for direct load support
vs HPN-RA
HPG-RA precision higher torque 150-2200Nm vs HPN-RA value 9-752Nm

Size 32 Performance

Size 32 Min Peak Torque
150 Nm
Size 32 Max Peak Torque
330 Nm
Size 32 Max Input Speed
6000 rpm

Size 65 Performance

Size 65 Max Peak Torque
2200 Nm
Size 65 Max Momentary Torque
4500 Nm

Product Attributes

Product Type
Right Angle Harmonic Planetary Precision Gearbox
Geometry
Right angle 90 degree spiral bevel input
Backlash
Less than 3 arc-min
Peak Torque Range
150 to 2200 Nm
vs HPN-RA
Precision higher torque vs value series
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-RA delivers high torque in a compact right angle design with continuous backlash compensation and cross roller output bearing. Available in 3 frame sizes: 32, 50, and 65 mm.

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