Gear Couplings
WGII Crowned Gear Coupling
WGII Crowned Gear Coupling with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
WGII is a crowned gear coupling with a simplified table of bore, bore length, D/B/C dimensions, mass and inertia. This concise data set still requires a complete machine-interface check: a suitable torque row can be rejected by bore length, shaft spacing, sealing access or guard clearance. The published model tables contain 15 size rows and provide torque values spanning 710–160000 N·m, permissible-speed values spanning 2300–6700 r/min, bore values spanning 12–260 mm. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- WGII crowned-tooth arrangement
- Compact bore and D/B/C dimensional table
- Mass and inertia listed for the coupling assembly
- The model data provides torque values spanning 710–160000 N·m, permissible-speed values spanning 2300–6700 r/min, bore values spanning 12–260 mm for a traceable preliminary comparison.
Typical Selection Context
- General industrial shaft lines with a WGII interface
- Compact gear-coupling installations with known shaft spacing
Technical Specification
The following model tables are provided for preliminary comparison. Keep the relevant assembly drawing with the selected row.
| Model | Nominal torque Tn N·m | Permissible speed [n] r/min | Bore diameter | Bore length L | D | D₁ | D₂ | B | C | Mass kg | Mass moment of inertia kg·m² |
|---|---|---|---|---|---|---|---|---|---|---|---|
| d | Y J₁ | ||||||||||
| WG1 | 710 | 6300 | 12~42 | 32~112 | 115 | 88 | 60 | 100 | 3/14 | 4.86 | 0.0063 |
| WG2 | 1250 | 6700 | 22~56 | 52~112 | 145 | 108 | 77 | 104 | 4 | 7.48 | 0.016 |
| WG3 | 2500 | 6300 | 22~63 | 52~142 | 165 | 125 | 90 | 108 | 3/7 | 12.2 | 0.033 |
| WG4 | 4500 | 5600 | 30~80 | 82~172 | 195 | 145 | 112 | 116 | 3 | 19.6 | 0.073 |
| WG5 | 7100 | 5300 | 30~90 | 82~172 | 215 | 168 | 128 | 126 | 3 | 26.1 | 0.126 |
| WG6 | 10000 | 5000 | 32~100 | 82~212 | 230 | 185 | 145 | 134 | 3 | 38.0 | 0.213 |
| WG7 | 14000 | 4500 | 32~110 | 82~212 | 265 | 210 | 160 | 148 | 5 | 45.0 | 0.35 |
| WG8 | 20000 | 4250 | 55~125 | 107~212 | 272 | 225 | 176 | 162 | 5 | 55.8 | 0.46 |
| WG9 | 25000 | 4000 | 65~140 | 107~252 | 305 | 245 | 190 | 176 | 5 | 80.5 | 0.77 |
| WG10 | 40000 | 3550 | 75~160 | 132~302 | 340 | 280 | 220 | 196 | 5 | 121.8 | 1.54 |
| WG11 | 56000 | 3000 | 85~180 | 167~302 | 385 | 325 | 256 | 224 | 8 | 167 | 2.77 |
| WG12 | 80000 | 2800 | 120~200 | 167~352 | 435 | 360 | 288 | 250 | 8 | 242 | 4.75 |
| WG13 | 112000 | 2500 | 140~220 | 202~352 | 480 | 400 | 320 | 272 | 8 | 309 | 7.76 |
| WG14 | 160000 | 2300 | 160~260 | 242~410 | 540 | 440 | 362 | 316 | 10 | 423 | 13.52 |
Engineering Context
This model is best understood from its own construction: WGII crowned-tooth arrangement; Compact bore and D/B/C dimensional table; Mass and inertia listed for the coupling assembly Industry selection practice checks torque and speed together with the movement, shaft interface, installation envelope and maintenance conditions allowed by that construction.
Technical Notes
- Model symbols, units and empty or placeholder cells are shown as published.
- Dimension letters must be interpreted with the relevant assembly drawing.
- Published values support preliminary review and do not replace final engineering confirmation.
Assembly Drawing

Information Required for Selection
- Start with torque and speed, then match bore length and D/B/C envelope
- Confirm lubrication, seal access, displacement and guard clearance
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
Is the smaller table easier to select from?
It is concise, but the drawing remains necessary to interpret every dimension and clearance.
What can invalidate a torque match?
Insufficient bore length, shaft spacing, sealing access or speed can invalidate an otherwise suitable torque row.
Are the published values final ordering values?
No. They are preliminary engineering data; confirm the selected model, drawing, dimensions, materials, standard and suitability with RONGXING DRIVE.
Technical data is provided for preliminary selection. Confirm the final model, dimensions, materials, applicable standard and operating suitability with RONGXING DRIVE before quotation, manufacture or installation.