Flexible Couplings
UL Tire Coupling
UL Tire Coupling with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
UL is a tire coupling with its own model geometry and assembly drawing. The descriptive wording is incomplete, so this page focuses on the checked bore, torque, speed and dimensional rows. The resilient tire and its environment remain central to final selection. The published model tables contain 18 size rows and provide torque values spanning 10–25000 N·m, permissible-speed values spanning 800–5000 r/min, bore values spanning 10–180 mm. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- UL-specific resilient tire interface
- Model data and drawing govern bore, length and envelope
- Incomplete descriptive wording is not converted into a new claim
- The model data provides torque values spanning 10–25000 N·m, permissible-speed values spanning 800–5000 r/min, bore values spanning 10–180 mm for a traceable preliminary comparison.
Typical Selection Context
- Industrial drives where a resilient tire element is specified
- Motor and process equipment requiring damping and accessible tire inspection
Technical Specification
The following model tables are provided for preliminary comparison. Keep the relevant assembly drawing with the selected row.
| Size | Main dimensions D | Main dimensions H | Main dimensions D₁ | Number of screws Md×L | Permissible bore d dz | Bore length L Y J₁ Z₁ | Nominal torque Tn N·m | Permissible speed [n] r/min | Mass moment of inertia kg·m² | Mass kg |
|---|---|---|---|---|---|---|---|---|---|---|
| UL1 | 80 | 20 | 29 | 12-M5×12 | 10~18 | 22~42 | 10 | 5000 | 0.0003 | 0.7 |
| UL2 | 100 | 26 | 36 | 12-M6×14 | 12~22 | 27~52 | 25 | 5000 | 0.0008 | 1.2 |
| UL3 | 120 | 32 | 40 | 12-M8×15 | 18~25 | 30~62 | 63 | 4800 | 0.0022 | 1.8 |
| UL4 | 140 | 38 | 48 | 12-M8×18 | 20~30 | 38~82 | 100 | 4500 | 0.0044 | 3 |
| UL5 | 160 | 45 | 56 | 12-M10×20 | 24~35 | 38~82 | 160 | 4000 | 0.0084 | 4.6 |
| UL6 | 180 | 50 | 65 | 12-M10×22 | 25~40 | 44~112 | 250 | 3600 | 0.0164 | 7.1 |
| UL7 | 200 | 56 | 78 | 12-M10×25 | 32~48 | 60~112 | 315 | 3200 | 0.029 | 10.9 |
| UL8 | 220 | 63 | 80 | 12-M12×28 | 38~50 | 60~112 | 400 | 3000 | 0.045 | 13 |
| UL9 | 250 | 71 | 100 | 16-M12×30 | 42~60 | 84~142 | 630 | 2800 | 0.089 | 20 |
| UL10 | 280 | 80 | 120 | 16-M12×35 | 45~70 | 84~142 | 800 | 2400 | 0.159 | 30.6 |
| UL11 | 320 | 90 | 125 | 12-M16×40 | 50~75 | 84~142 | 1000 | 2100 | 0.279 | 39 |
| UL12 | 360 | 100 | 150 | 12-M16×45 | 55~85 | 84~172 | 1600 | 2000 | 0.535 | 59 |
| UL13 | 400 | 110 | 170 | 16-M16×50 | 63~95 | 107~172 | 2500 | 1800 | 0.896 | 81 |
| UL14 | 480 | 130 | 210 | 16-M20×56 | 75~110 | 107~212 | 4000 | 1600 | 2.261 | 145 |
| UL15 | 560 | 150 | 255 | 24-M20×60 | 85~125 | 132~212 | 6300 | 1200 | 4.645 | 222 |
| UL16 | 630 | 180 | 280 | 16-M24×68 | 100~140 | 167~252 | 10000 | 1000 | 8.092 | 302 |
| UL17 | 750 | 210 | 350 | 24-M24×76 | 120~160 | 167~302 | 16000 | 900 | 20.017 | 561 |
| UL18 | 900 | 250 | 420 | 24-M30×86 | 140~180 | 202~302 | 25000 | 800 | 43.053 | 818 |
Engineering Context
This model is best understood from its own construction: UL-specific resilient tire interface; Model data and drawing govern bore, length and envelope; Incomplete descriptive wording is not converted into a new claim 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
- Confirm UL bore, shaft span, tire seat, speed and torque from the table
- Review temperature, oil, dust, ozone, misalignment and maintenance access
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
Why does the UL page avoid a longer product claim?
The descriptive information is incomplete; only the checked model and dimensional information is stated.
What environmental data is important?
Temperature, oil exposure, dust, ozone and access to inspect the tire should be supplied.
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.