Flexible Couplings
XLL Star Elastomer Coupling with Brake Drum
XLL Star Elastomer Coupling with Brake Drum with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
XLL is the star elastomer coupling with a brake-drum interface. The jaw-and-spider connection must be selected together with drum diameter, brake clearance and rotating mass. Use the XLL drawing for bore, hub and drum details, then confirm the elastomer environment and braking duty before ordering. The published model tables contain 33 size rows and provide the model-specific dimensional fields requiring confirmation. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- Star elastomer coupling with brake drum
- Jaw, spider and drum share one installation envelope
- Brake clearance and elastomer temperature are both selection inputs
- The model table provides the model-specific dimensional fields requiring confirmation for a traceable preliminary comparison.
Typical Selection Context
- Compact brake-equipped motor and conveyor drives
- Machines requiring a resilient jaw coupling with a drum interface
Technical Specification
The following model tables are provided for preliminary comparison. Keep the relevant assembly drawing with the selected row.
| Size | B₁ | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| XLL3 | 30 | 35 | 38 | ||||||
| XLL4 | 31 | 36 | 39 | ||||||
| XLL5 | 38 | 45 | 50 | ||||||
| XLL6 | 40 | 48 | 52 | ||||||
| XLL7 | 50 | 50 | 58 | 62 | |||||
| XLL8 | 58 | 72 | 82 | ||||||
| XLL9 | 50 | 58 | 73 | 83 | |||||
| XLL10 | 64 | 75 | 84 | 107 | 110 | ||||
| XLL11 | 78 | 92 | 112 | 115 | |||||
| XLL12 | 80 | 95 | 112 | 125 | |||||
| XLL13 | 100 | 115 | 130 | 132 | |||||
| XLL14 | 102 | 125 | 130 | 132 | |||||
| XLL15 | 126 | 132 | 150 | ||||||
| XLL16 | 130 | 140 | 155 | ||||||
| D₀ | 160 | 200 | 250 | 315 | 400 | 500 | 630 | 710 | 800 |
| B | 70 | 85 | 105 | 135 | 170 | 210 | 265 | 300 | 340 |
| Permissible speed [n]r/min | 3550 | 2800 | 2240 | 1800 | 1400 | 1120 | 900 | 800 | 710 |
| Mass moment of inertia (kg/m²) | 0.012 | 0.035 | 0.1 | 0.35 | 1.01 | 2.9 | 8.72 | 15.9 | 30.08 |
| Mass (kg) | 2.4 | 3.92 | 8.2 | 17.8 | 34.2 | 63.2 | 119 | 169 | 221 |
| Size | Nominal torque Tn N·m | Bore diameter d₁ | Bore diameter d₂ | Bore length L | D | D₁ | D₂ | E | S | Mass moment of inertia (kg·m²) | Mass (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| XLL3 | 190 | 10～28 | 10～24 | 35 | 65 | 48 | 36 | 20 | 2.5 | 0.0004 | 0.90 |
| XLL4 | 380 | 12～38 | 12～32 | 45 | 80 | 66 | 48 | 24 | 3 | 0.0016 | 1.84 |
| XLL5 | 530 | 14～42 | 14～35 | 50 | 95 | 75 | 53 | 26 | 3 | 0.0033 | 2.84 |
| XLL6 | 620 | 15～48 | 15～42 | 56 | 105 | 85 | 63 | 28 | 3.5 | 0.0052 | 3.95 |
| XLL7 | 750 | 20～55 | 20～50 | 65 | 120 | 98 | 76 | 30 | 4 | 0.0103 | 6.02 |
| XLL8 | 850 | 22～65 | 22～55 | 75 | 135 | 115 | 82 | 35 | 4.5 | 0.021 | 8.81 |
| XLL9 | 1950 | 30～75 | 30～66 | 85 | 160 | 135 | 101 | 40 | 5 | 0.045 | 14.13 |
| XLL10 | 4800 | 40～90 | 40～88 | 100 | 200 | 160 | 132 | 45 | 5.5 | 0.122 | 25.4 |
| XLL11 | 6600 | 50～100 | 50～96 | 110 | 225 | 180 | 145 | 50 | 6 | 0.213 | 35.3 |
| XLL12 | 8000 | 60～110 | 60～110 | 120 | 255 | 200 | 167 | 55 | 6.5 | 0.387 | 49.9 |
| XLL13 | 10000 | 60～125 | 60～125 | 140 | 290 | 230 | 190 | 60 | 7 | 0.750 | 74.8 |
| XLL14 | 14600 | 60～140 | 60～140 | 155 | 320 | 255 | 210 | 65 | 7.5 | 1.232 | 100.7 |
| XLL15 | 20000 | 80～160 | 60～160 | 175 | 370 | 290 | 248 | 75 | 9 | 2.44 | 150.9 |
| XLL16 | 23500 | 100～180 | 60～180 | 195 | 420 | 325 | 285 | 85 | 10.5 | 4.54 | 218.4 |
Engineering Context
This model is best understood from its own construction: Star elastomer coupling with brake drum; Jaw, spider and drum share one installation envelope; Brake clearance and elastomer temperature are both selection inputs 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
- Provide coupling torque, brake torque, drum dimensions and speed
- Match bore, spider, jaw clearance, temperature, guard and maintenance access
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
What changes from XL to XLL?
XLL adds a brake drum, so braking torque, drum clearance and inertia must be reviewed.
Does the drum affect the elastomer?
The shared envelope and heat/clearance conditions must be checked for the selected spider.
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.
