Flexible Couplings
ZL Flexible Pin Gear Coupling
ZL Flexible Pin Gear Coupling with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
ZL is a flexible pin gear coupling combining crowned-tooth geometry with resilient pin elements. Its table lists nominal torque, speed, bore, bore length, D/D1/B/S dimensions, inertia and mass. Selection should consider the gear-tooth envelope, pin replacement access, lubrication and shaft displacement together. The published model tables contain 23 size rows and provide torque values spanning 0.112–2800 N·m, permissible-speed values spanning 460–5000 r/min, bore values spanning 12–850 mm. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- Flexible pin gear-coupling arrangement
- Crowned gear and resilient-pin functions in one model
- Bore, D/D1/B/S, inertia and mass by size
- The model data provides torque values spanning 0.112–2800 N·m, permissible-speed values spanning 460–5000 r/min, bore values spanning 12–850 mm for a traceable preliminary comparison.
Typical Selection Context
- Gear-unit and heavy industrial drives needing pin flexibility
- Shaft lines where a gear-coupling envelope and resilient pins are specified
Product Gallery
Technical Specification
The following model tables are provided for preliminary comparison. Keep the relevant assembly drawing with the selected row.
| Model | Nominal torque Tn kN·m | Permissible speed [n] r/min | Bore diameter d | Bore length Y type J type L | D | D₁ | B | S | Mass moment of inertia kg·m² | Mass kg |
|---|---|---|---|---|---|---|---|---|---|---|
| ZL1 | 0.112 | 5000 | 12～24 | 27～52 | 76 | 40 | 42 | 2.5 | 0.001 | 1.67 |
| ZL2 | 0.25 | 5000 | 16～32 | 44～82 | 90 | 50 | 50 | 2.5 | 0.003 | 3.00 |
| ZL3 | 0.63 | 4500 | 25～42 | 44～112 | 118 | 65 | 70 | 3.0 | 0.012 | 7.31 |
| ZL4 | 1.8 | 4200 | 40～60 | 84～142 | 158 | 90 | 90 | 4 | 0.045 | 16.20 |
| ZL5 | 4.5 | 4000 | 50～80 | 84～172 | 192 | 120 | 90 | 4 | 0.108 | 27.02 |
| ZL6 | 8 | 3300 | 60～95 | 107～172 | 230 | 130 | 112 | 5 | 0.242 | 40.89 |
| ZL7 | 11.2 | 2900 | 70～110 | 107～212 | 260 | 160 | 112 | 5 | 0.443 | 59.60 |
| ZL8 | 18 | 2500 | 80～130 | 132～252 | 300 | 190 | 128 | 6 | 0.908 | 94.67 |
| ZL9 | 25 | 2300 | 90～150 | 132～252 | 335 | 220 | 150 | 7 | 1.733 | 138.1 |
| ZL10 | 31.5 | 2100 | 100～170 | 167～302 | 355 | 245 | 152 | 8 | 2.422 | 169.3 |
| ZL11 | 40 | 2000 | 110～180 | 167～302 | 380 | 260 | 172 | 8 | 3.369 | 203.1 |
| ZL12 | 63 | 1700 | 130～200 | 202～352 | 445 | 290 | 182 | 8 | 6.524 | 296.6 |
| ZL13 | 100 | 1500 | 150～240 | 202～410 | 515 | 345 | 218 | 8 | 14.19 | 469.2 |
| ZL14 | 125 | 1400 | 170～260 | 242～410 | 560 | 390 | 218 | 8 | 21.67 | 621.7 |
| ZL15 | 160 | 1300 | 190～300 | 282～470 | 590 | 420 | 240 | 10 | 29.52 | 730.5 |
| ZL16 | 250 | 1000 | 220～340 | 282～550 | 695 | 490 | 265 | 10 | 62.47 | 1144 |
| ZL17 | 355 | 950 | 240～380 | 330～550 | 770 | 550 | 285 | 10 | 106.0 | 1557 |
| ZL18 | 450 | 850 | 250～420 | 330～650 | 860 | 605 | 300 | 13 | 175.4 | 2062 |
| ZL19 | 630 | 750 | 280～450 | 380～650 | 970 | 695 | 322 | 14 | 323.2 | 3068 |
| ZL20 | 1120 | 650 | 320～500 | 380～650 | 1160 | 800 | 355 | 15 | 699.4 | 4715 |
| ZL21 | 1800 | 530 | 380～630 | 450～800 | 1440 | 1020 | 360 | 18 | 1880 | 8699 |
| ZL22 | 2240 | 500 | 420～750 | 540～800 | 1520 | 1100 | 405 | 19 | 2596 | 9473 |
| ZL23 | 2800 | 460 | 480～850 | 540～880 | 1640 | 1240 | 440 | 20 | 3982 | 12095 |
Engineering Context
This model is best understood from its own construction: Flexible pin gear-coupling arrangement; Crowned gear and resilient-pin functions in one model; Bore, D/D1/B/S, inertia and mass by size 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 bore and length to both shafts and confirm gear/pin access
- Check torque, speed, displacement, lubrication, inertia and guarding
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
What does the pin add to a gear coupling?
The resilient pins provide the flexible interface while the gear geometry transmits torque.
Why are lubrication and pin access both needed?
The tooth space needs lubrication and the pins need practical inspection or replacement access.
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.
