Flexible Couplings
XLS Double-Flange Star Elastomer Coupling
XLS Double-Flange Star Elastomer Coupling with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
XLS is the double-flange star elastomer coupling. Its two flange interfaces make pilot, bolt-circle and axial alignment as important as torque and speed. The elastomeric star element provides the flexible link, while the drawing establishes the double-flange spacing and service access. The published model tables contain 16 size rows and provide torque values spanning 20–23500 N·m, permissible-speed values spanning 1800–19000 r/min, bore values spanning 6–180 mm. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- Double-flange star elastomer arrangement
- Two flange pilots and bolt patterns require matching
- Replaceable elastomer element with model-specific clearance
- The model data provides torque values spanning 20–23500 N·m, permissible-speed values spanning 1800–19000 r/min, bore values spanning 6–180 mm for a traceable preliminary comparison.
Typical Selection Context
- Double-flange motor, gearbox and machine interfaces
- Compact drive lines where both connected machines present flange faces
Technical Specification
The following model tables are provided for preliminary comparison. Keep the relevant assembly drawing with the selected row.
| Size | Nominal torque Tn N·m | Permissible speed [n] r/min | Bore diameter d | Bore length L | D | E | D₁ | S | Mass moment of inertia (kg·m²) | Mass (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| XLS1 | 20 | 19000 | 6～9 | 25 | 65 | 32 | 32 | 2 | 0.0004 | 0.905 |
| XLS2 | 70 | 14000 | 8～24 | 30 | 80 | 34 | 40 | 2 | 0.001 | 1.44 |
| XLS3 | 190 | 11800 | 10～28 | 35 | 100 | 40 | 48 | 2.5 | 0.003 | 2.79 |
| XLS4 | 380 | 9500 | 12～38 | 45 | 115 | 44 | 66 | 3 | 0.006 | 4.32 |
| XLS5 | 530 | 8000 | 14～42 | 50 | 140 | 50 | 75 | 3 | 0.016 | 7.41 |
| XLS6 | 620 | 7100 | 15～48 | 50 | 150 | 52 | 85 | 3.5 | 0.023 | 9.03 |
| XLS7 | 750 | 6300 | 20～55 | 65 | 175 | 62 | 98 | 4 | 0.052 | 14.86 |
| XLS8 | 850 | 5600 | 22～65 | 75 | 190 | 67 | 115 | 4.5 | 0.081 | 19.41 |
| XLS9 | 1950 | 4750 | 30～75 | 85 | 215 | 78 | 135 | 5 | 0.155 | 29.49 |
| XLS10 | 4800 | 3750 | 40～90 | 100 | 260 | 85 | 160 | 5.5 | 0.35 | 46.90 |
| XLS11 | 6600 | 3350 | 50～100 | 110 | 285 | 100 | 180 | 6 | 0.58 | 64.10 |
| XLS12 | 8000 | 3000 | 60～110 | 120 | 330 | 107 | 200 | 6.5 | 1.15 | 94.10 |
| XLS13 | 10000 | 2650 | 60～125 | 140 | 370 | 120 | 230 | 7 | 2.06 | 135.70 |
| XLS14 | 14600 | 2360 | 60～140 | 155 | 410 | 133 | 255 | 7.5 | 3.46 | 184.90 |
| XLS15 | 20000 | 2000 | 80～160 | 175 | 460 | 151 | 290 | 9 | 5.70 | 263.90 |
| XLS16 | 23500 | 1800 | 85～180 | 190 | 520 | 165 | 320 | 10.5 | 10.89 | 364.50 |
Engineering Context
This model is best understood from its own construction: Double-flange star elastomer arrangement; Two flange pilots and bolt patterns require matching; Replaceable elastomer element with model-specific clearance 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
- Send both flange pilots, bolt circles, bore and installed length
- Check torque, speed, spider material, misalignment and service access
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
Why must both flange faces be measured?
The XLS connection is governed by two interfaces; a mismatch at either end prevents correct installation.
What is the main flexible element?
The star-shaped elastomer transmits torque and provides the specified compliance.
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.
