Gear Couplings
TGL Crowned Gear Coupling
TGL Crowned Gear Coupling with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
TGL is a crowned gear coupling for torque transmission through a compact model-specific tooth and sleeve arrangement. Its table should be read for the exact bore, torque, speed and dimensional row; the drawing controls the tooth-space clearance and installation envelope. As with other gear couplings, alignment, lubrication and sealing are part of the engineering decision. The published model tables contain 14 size rows and provide torque values spanning 10–2500 N·m, permissible-speed values spanning 2120–14000 r/min, bore values spanning -125–50 mm. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- TGL crowned-tooth coupling geometry
- Model-specific torque, speed, bore and sleeve dimensions
- Lubrication and sealing access are part of installation
- The model data provides torque values spanning 10–2500 N·m, permissible-speed values spanning 2120–14000 r/min, bore values spanning -125–50 mm for a traceable preliminary comparison.
Typical Selection Context
- General industrial and gear-unit shaft connections
- Compact torque-transmission layouts where tooth-coupling clearance is available
Technical Specification
The following model tables are provided for preliminary comparison. Keep the relevant assembly drawing with the selected row.
| Size | Previous size | Nominal torque Tn N·m | Permissible speed [n] r/min | Main dimensions | Bore diameter d | Bore length L J₁ type | Mass moment of inertia (kg·m²) | Mass (kg) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | D₁ | B | S | ||||||||||
| Type I | IType I | Type I | IType I | ||||||||||
| TGL1 | M14 | 10 | 14000 | 40 | - | 25 | 38 | - | 4 | 6-14 | 16-27 | 0.264 | 0.2 |
| TGL2 | M19 | 16 | 11800 | 48 | - | 32 | 38 | - | 4 | 8-19 | 20-30 | 0.640 | 0.278 |
| TGL3 | M24 | 31.5 | 10600 | 52 | 58 | 36 | 42 | 52 | 4 | 10-24 | 22-38 | 1.541 | 0.533 |
| TGL4 | M28 | 45 | 8500 | 66 | 70 | 45 | 46 | 56 | 4 | 12-28 | 27-44 | 3.98 | 0.869 |
| TGL5 | M32 | 63 | 7500 | 75 | 85 | 50 | 48 | 58 | 4 | 14-32 | 27-60 | 8.80 | 1.52 |
| TGL6 | M38 | 80 | 6700 | 82 | 90 | 58 | 48 | 58 | 4 | 16-38 | 30-60 | 14.64 | 2.15 |
| TGL7 | M42 | 100 | 6000 | 92 | 100 | 65 | 50 | 60 | 4 | 20-42 | 38-84 | 27.24 | 3.14 |
| TGL8 | M48 | 140 | 5600 | 100 | 100 | 68 | 50 | 60 | 4 | 22-48 | 38-84 | 38.64 | 4.18 |
| TGL9 | M65 | 355 | 4000 | 140 | 140 | 96 | 75 | 85 | 4 | 25-70 | 44-107 | 165.5 | 8.51 |
| TGL10 | M80 | 710 | 3150 | 175 | 175 | 128 | 95 | 95 | 6 | 30-85 | 60-132 | 534.6 | 17.10 |
| TGL11 | M100 | 1250 | 3000 | 210 | 210 | 165 | 102 | 102 | 8 | 40-110 | 84-167 | 1650 | 34.56 |
| TGL12 | M125 | 2500 | 2120 | 270 | 270 | 195 | 135 | 135 | 10 | 50-125 | 84-167 | 4731 | 66.86 |
Engineering Context
This model is best understood from its own construction: TGL crowned-tooth coupling geometry; Model-specific torque, speed, bore and sleeve dimensions; Lubrication and sealing access are part of installation 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
- Match torque, speed, bore and shaft-end spacing to the TGL row
- Confirm lubrication, seal, misalignment and guard requirements
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
What makes TGL a gear coupling?
Torque is transmitted through meshing gear teeth while the coupling accommodates the specified displacement.
Why is alignment still required?
Crowned teeth permit limited movement; they do not replace correct shaft alignment and lubrication.
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.