HP8 Miniature Planetary Gearhead for Small Servomotors
Ultra-compact 25mm square miniature planetary gearhead for small servomotors 5W to 20W with CP removable hub pinion or HP standalone pinion ratios 5 16 and 25 for semiconductor and medical applications
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Product Overview
The HP8 miniature gearhead connects to small servomotors 5W-20W to create ultra-compact high performance servo actuators. Available in CP version with removable input hub pinion assembly or HP version with standalone pinion with precision through bore. Size 25mm square ratios 5 16 and 25. Backlash less than 30 arc-min. Rated torque 0.4 to 1.57 Nm. Quick delivery. Ideal for semiconductor and medical applications.
The HP8 is a fully integrated rotary actuator combining servo motor, harmonic gear reducer, encoders, servo electronics, and compact mechanical packaging in a single assembly.
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 HP8 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
Technical Specifications
Overview
Ratio 5 Performance
Ratio 16 Performance
Ratio 25 Performance
Product Attributes
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.
Packaging & Converting
Supports motion axes in packaging, labelling, and converting systems where compact drivetrains and stable positioning are essential.
Robot Peripheral Axes
Used on auxiliary axes, end-of-arm devices, and support mechanisms that need precise servo-driven output motion.
Index Tables & Feed Systems
Works well in indexing mechanisms, feeders, and transfer systems where repeatable angular motion is important.
OEM Motion Modules
Simplifies motion subsystem design for OEMs needing a packaged reducer with predictable motor-mount integration.
Precision Equipment
Supports analytical, optical, and specialty machinery requiring compact servo-ready reduction stages.
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
Frequently Asked Questions
Technical answers sourced from engineering specifications and integration guides.
The HP8 connects to small servomotors of 5W to 20W creating ultra-compact servo actuators. Available in CP removable hub and HP standalone pinion versions in a 25 mm square housing.
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