Harmonic Drive HPN Right-Angle Planetary Gearheads
Harmonic Drive HPN Right-Angle Planetary Gearheads
Harmonic Drive HPN-RA combines a spiral-bevel right-angle stage with a helical planetary output stage. The five-size family offers a space-saving alternative to an inline servo gearbox, with finite backlash and a motor-specific Quick Connect adaptation. It is a mechanical gearhead, not an integrated actuator or a zero-backlash strain-wave reducer.
Review Summary
Consider HPN-RA when a servo axis needs a right-angle input and its output load can tolerate the exact model’s backlash and compliance. Check the detailed rating row, particularly size 11, rather than applying the family headline to every ratio. Rated, repeated-peak and momentary torque are different limits, and motor compatibility depends on the selected adaptation.
Architecture Spiral-bevel input stage plus helical planetary output; right-angle layout Frame families 11 / 14 / 20 / 32 / 40; exact ratios vary with size Ratio scope Family 3:1–50:1; size 11 listed at 4 / 5 / 7 / 10 in the cited tables Size 11 backlash exceptions Ratio 4: <9 arcmin; 5: <8 arcmin; 7 and 10: <7 arcmin in the detailed table Other headline backlash classes Generally <6 arcmin for listed one-stage models and <9 for two-stage models; use the exact rating row Size 14 ratio 5 example General-catalog table: 29 Nm rated; 35 Nm repeated peak; 107 Nm momentary Size 40 ratio 30 example General-catalog table: 650 Nm rated; 752 Nm repeated peak; 1265 Nm momentary Maximum input speed examples Size 11: 10000 rpm; compared size 14–40 tables: 6000 rpm; average/rated duty still applies Output choices Shaft with key and center tapped hole, or selected smooth-shaft/tapped arrangement Motor adaptation Quick Connect coupling and piloted mounting arrangement selected for the actual motor Control scope External servo motor, feedback, amplifier and controller Price Request a quote for the exact gearhead, ratio, output and motor adaptation Applications and Industries
Consider HPN-RA for OEM servo-driven handling, indexing or machine mechanisms where a right-angle layout fits the installation and the selected model meets the output load and reversal requirements. Suitability depends on the exact motor, adapter, gear ratio and machine duty.
Manufacturing and automation
Request a quote for the exact configuration,quantity and delivery schedule.
| Architecture | Spiral-bevel input stage plus helical planetary output; right-angle layout |
| Frame families | 11 / 14 / 20 / 32 / 40; exact ratios vary with size |
| Ratio scope | Family 3:1–50:1; size 11 listed at 4 / 5 / 7 / 10 in the cited tables |
| Size 11 backlash exceptions | Ratio 4: <9 arcmin; 5: <8 arcmin; 7 and 10: <7 arcmin in the detailed table |
| Other headline backlash classes | Generally <6 arcmin for listed one-stage models and <9 for two-stage models; use the exact rating row |
| Size 14 ratio 5 example | General-catalog table: 29 Nm rated; 35 Nm repeated peak; 107 Nm momentary |
| Size 40 ratio 30 example | General-catalog table: 650 Nm rated; 752 Nm repeated peak; 1265 Nm momentary |
| Maximum input speed examples | Size 11: 10000 rpm; compared size 14–40 tables: 6000 rpm; average/rated duty still applies |
| Output choices | Shaft with key and center tapped hole, or selected smooth-shaft/tapped arrangement |
| Motor adaptation | Quick Connect coupling and piloted mounting arrangement selected for the actual motor |
| Control scope | External servo motor, feedback, amplifier and controller |
| Price | Request a quote for the exact gearhead, ratio, output and motor adaptation |
