Harmonic Drive HPG-RA Right-Angle Planetary Gearheads
Harmonic Drive HPG-RA Right-Angle Planetary Gearheads
HPG-RA is a right-angle planetary gearhead with a load-supporting cross-roller output bearing and motor-mounting options. It belongs to Harmonic Drive’s planetary range, rather than its strain-wave component sets. Three frame sizes, configuration-specific reduction ratios and distinct output styles let a designer redirect the motor axis while keeping the load close to a supported output.
Review Summary
Consider HPG-RA for an automation axis that needs a right-angle motor arrangement, low planetary backlash and substantial output-load support. Size it from the full torque-duty and bearing-load requirements. The 150–2200 Nm family headline describes repeated peak torque across different configurations; it does not describe continuous torque or a single gearbox covering the entire range.
Architecture Right-angle planetary gearhead; external motor and drive Frame sizes HPG-32A / HPG-50A / HPG-65A Ratio scope Overall family 5:1 to 50:1; available ratios differ by frame Backlash Manufacturer RA product table: less than 3 arcmin Output support Integrated cross-roller bearing Output choices Flange; smooth shaft; keyed shaft with tapped center hole, subject to configuration HPG-32A-5-RA3 66 Nm L10; 120 Nm L50; 150 Nm repeated peak; 200 Nm momentary peak HPG-32A-5-RA3 additional entries 6000 rpm maximum input; 4 arcmin standard accuracy; 6 kg mass HPG-65A-50-RA5 750 Nm L10; 1650 Nm L50; 2200 Nm repeated peak; 4500 Nm momentary peak HPG-65A-50-RA5 additional entries 3000 rpm maximum input; 3 arcmin standard accuracy; 50 kg mass Motor interface Quick Connect coupling with configuration-specific mounting requirements Price Request a quote for frame, ratio, output and motor adapter Applications and Industries
Right-angle servo axes, rotary tooling and supported positioning mechanisms
Industrial automation
Request a quote for the exact configuration,quantity and delivery schedule.
| Architecture | Right-angle planetary gearhead; external motor and drive |
| Frame sizes | HPG-32A / HPG-50A / HPG-65A |
| Ratio scope | Overall family 5:1 to 50:1; available ratios differ by frame |
| Backlash | Manufacturer RA product table: less than 3 arcmin |
| Output support | Integrated cross-roller bearing |
| Output choices | Flange; smooth shaft; keyed shaft with tapped center hole, subject to configuration |
| HPG-32A-5-RA3 | 66 Nm L10; 120 Nm L50; 150 Nm repeated peak; 200 Nm momentary peak |
| HPG-32A-5-RA3 additional entries | 6000 rpm maximum input; 4 arcmin standard accuracy; 6 kg mass |
| HPG-65A-50-RA5 | 750 Nm L10; 1650 Nm L50; 2200 Nm repeated peak; 4500 Nm momentary peak |
| HPG-65A-50-RA5 additional entries | 3000 rpm maximum input; 3 arcmin standard accuracy; 50 kg mass |
| Motor interface | Quick Connect coupling with configuration-specific mounting requirements |
| Price | Request a quote for frame, ratio, output and motor adapter |






















