Model Range
Full Model Range
All five WHS series — 53 model codes across frame sizes 14 to 40. Prices and lead times on request.
This page lists every orderable code for quotation. For choosing a size, each series page carries a compact matrix of frame size against structure / ratio.
Nomenclature
How to Read a Model Code
Every order is placed by a single code, e.g. WHS-HCS-20-100-U-I.
WHSBrand prefix — Wanheshun harmonic reducer
HCSSeries — cup, ultra-short cup, integrated or hat
20Frame size — circular spline outside diameter (mm)
100Reduction ratio 100 : 1; XX = ratio confirmed at order
U-IStructure code — see the table below
Structure Codes
| Code | Structure | Used On |
|---|---|---|
| U-I | Simple connection — standard flange, keyed or direct bore | HCS · HCD · HYT · HST · HSD |
| U-III | Vacuum-rated — low outgassing, for clean and vacuum environments | HST |
| U-IV | Solid output shaft — for pulleys, gears and couplings | HST |
Pricing and lead time are quoted per project. Send the model code, ratio and annual quantity for a formal quotation.
WHS-HCS — Standard Cup-Type
Cup-shaped flexspline, compact body. Circular spline fixed, flexspline as output.
| Model Code | Frame Size | Reduction Ratio | Structure / Notes |
|---|---|---|---|
| WHS-HCS-14-XX-U-I | 14 | 50 : 1 – 160 : 1 | 6 fixed-hole groups |
| WHS-HCS-17-XX-U-I | 17 | 50 : 1 – 160 : 1 | 6 fixed-hole groups |
| WHS-HCS-20-XX-U-I | 20 | 50 : 1 – 160 : 1 | 6 fixed-hole groups |
| WHS-HCS-25-XX-U-I | 25 | 50 : 1 – 160 : 1 | 8 fixed-hole groups |
| WHS-HCS-32-XX-U-I | 32 | 50 : 1 – 160 : 1 | 10 fixed-hole groups |
| WHS-HCS-40-XX-U-I | 40 | 50 : 1 – 160 : 1 | 16 fixed-hole groups |
WHS-HCD — Ultra-Short Cup-Type
Shortened cup structure with keyway — for axial-space-limited axes.
| Model Code | Frame Size | Reduction Ratio | Structure / Notes |
|---|---|---|---|
| WHS-HCD-14-XX-U-I | 14 | 50 : 1 – 160 : 1 | Ultra-short cup, with keyway |
| WHS-HCD-17-XX-U-I | 17 | 50 : 1 – 160 : 1 | Ultra-short cup, with keyway |
| WHS-HCD-20-XX-U-I | 20 | 50 : 1 – 160 : 1 | Ultra-short cup, with keyway |
| WHS-HCD-32-XX-U-I | 32 | 50 : 1 – 160 : 1 | Ultra-short cup, with keyway |
WHS-HYT — Integrated Harmonic Actuator
Flange-bearing integrated unit with output plate — motor mounts directly.
| Model Code | Frame Size | Reduction Ratio | Structure / Notes |
|---|---|---|---|
| WHS-HYT-14-30-U-I | 14 | 30 : 1 | Flange + output plate |
| WHS-HYT-14-50-U-I | 14 | 50 : 1 | Flange + output plate |
| WHS-HYT-14-80-U-I | 14 | 80 : 1 | Flange + output plate |
| WHS-HYT-14-100-U-I | 14 | 100 : 1 | Flange + output plate |
| WHS-HYT-17-30-U-I | 17 | 30 : 1 | Flange + output plate |
| WHS-HYT-17-50-U-I | 17 | 50 : 1 | Flange + output plate |
| WHS-HYT-17-80-U-I | 17 | 80 : 1 | Flange + output plate |
| WHS-HYT-17-100-U-I | 17 | 100 : 1 | Flange + output plate |
| WHS-HYT-20-30-U-I | 20 | 30 : 1 | Flange + output plate |
| WHS-HYT-20-50-U-I | 20 | 50 : 1 | Flange + output plate |
| WHS-HYT-20-80-U-I | 20 | 80 : 1 | Flange + output plate |
| WHS-HYT-20-100-U-I | 20 | 100 : 1 | Flange + output plate |
| WHS-HYT-25-30-U-I | 25 | 30 : 1 | Flange + output plate |
| WHS-HYT-25-50-U-I | 25 | 50 : 1 | Flange + output plate |
| WHS-HYT-25-80-U-I | 25 | 80 : 1 | Flange + output plate |
| WHS-HYT-25-100-U-I | 25 | 100 : 1 | Flange + output plate |
| WHS-HYT-32-30-U-I | 32 | 30 : 1 | Flange + output plate |
| WHS-HYT-32-50-U-I | 32 | 50 : 1 | Flange + output plate |
| WHS-HYT-32-80-U-I | 32 | 80 : 1 | Flange + output plate |
| WHS-HYT-32-100-U-I | 32 | 100 : 1 | Flange + output plate |
| WHS-HYT-40-50-U-I | 40 | 50 : 1 | Flange + output plate |
| WHS-HYT-40-80-U-I | 40 | 80 : 1 | Flange + output plate |
| WHS-HYT-40-100-U-I | 40 | 100 : 1 | Flange + output plate |
WHS-HST — Standard Hat-Type
Hollow-flange hat flexspline in three variants: simple, vacuum-rated and solid shaft.
| Model Code | Frame Size | Reduction Ratio | Structure / Notes |
|---|---|---|---|
| WHS-HST-14-XX-U-I | 14 | 50 : 1 – 160 : 1 | Simple connection |
| WHS-HST-17-XX-U-I | 17 | 50 : 1 – 160 : 1 | Simple connection |
| WHS-HST-20-XX-U-I | 20 | 50 : 1 – 160 : 1 | Simple connection |
| WHS-HST-25-XX-U-I | 25 | 50 : 1 – 160 : 1 | Simple connection |
| WHS-HST-32-XX-U-I | 32 | 50 : 1 – 160 : 1 | Simple connection |
| WHS-HST-40-XX-U-I | 40 | 50 : 1 – 160 : 1 | Simple connection |
| WHS-HST-14-XX-U-III | 14 | 50 : 1 – 160 : 1 | Vacuum-rated |
| WHS-HST-17-XX-U-III | 17 | 50 : 1 – 160 : 1 | Vacuum-rated |
| WHS-HST-20-XX-U-III | 20 | 50 : 1 – 160 : 1 | Vacuum-rated |
| WHS-HST-25-XX-U-III | 25 | 50 : 1 – 160 : 1 | Vacuum-rated |
| WHS-HST-32-XX-U-III | 32 | 50 : 1 – 160 : 1 | Vacuum-rated |
| WHS-HST-40-XX-U-III | 40 | 50 : 1 – 160 : 1 | Vacuum-rated |
| WHS-HST-14-XX-U-IV | 14 | 50 : 1 – 160 : 1 | Solid output shaft |
| WHS-HST-17-XX-U-IV | 17 | 50 : 1 – 160 : 1 | Solid output shaft |
| WHS-HST-20-XX-U-IV | 20 | 50 : 1 – 160 : 1 | Solid output shaft |
| WHS-HST-25-XX-U-IV | 25 | 50 : 1 – 160 : 1 | Solid output shaft |
| WHS-HST-32-XX-U-IV | 32 | 50 : 1 – 160 : 1 | Solid output shaft |
WHS-HSD — Ultra-Short Hat-Type
Axially shortened hat structure with keyway and internal support bearing.
| Model Code | Frame Size | Reduction Ratio | Structure / Notes |
|---|---|---|---|
| WHS-HSD-14-XX-U-I | 14 | 50 : 1 – 160 : 1 | Ultra-short hat, with keyway |
| WHS-HSD-17-XX-U-I | 17 | 50 : 1 – 160 : 1 | Ultra-short hat, with keyway |
| WHS-HSD-20-XX-U-I | 20 | 50 : 1 – 160 : 1 | Ultra-short hat, with keyway |
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