Flexible Couplings
ZLD Taper-Bore Flexible Pin Gear Coupling
ZLD Taper-Bore Flexible Pin Gear Coupling with model-specific technical data, engineering context and assembly drawing for preliminary selection.
Product Overview
ZLD is the taper-bore flexible pin gear coupling. The taper-bore interface changes the shaft fit and keying requirements, while the gear-and-pin arrangement carries the flexible torque path. Its table provides torque, speed, bore, D/D1/B/S, inertia and mass for matching the taper shaft and the surrounding guard. The published model tables contain 35 size rows and provide torque values spanning 0.112–100 N·m, permissible-speed values spanning 1500–5000 r/min, bore values spanning 16–220 mm. Use those values for preliminary comparison only; final materials, current standards, manufacturing details and operating suitability require confirmation from RONGXING DRIVE.
Key Features
- Taper-bore flexible pin gear coupling
- Resilient pins combined with gear-tooth torque transmission
- Taper fit, key and bore dimensions are drawing-controlled
- The model data provides torque values spanning 0.112–100 N·m, permissible-speed values spanning 1500–5000 r/min, bore values spanning 16–220 mm for a traceable preliminary comparison.
Typical Selection Context
- Gear-unit connections using a specified taper-bore shaft
- Heavy industrial drives where taper mounting and flexible pins are required
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, dz | Bore length Y type J₁ type Z₁ L | D | D₁ | B | S | Mass moment of inertia kg·m² | Mass kg |
|---|---|---|---|---|---|---|---|---|---|---|
| ZLD1 | 0.112 | 5000 | 16～19 | 30～42 | 76 | 40 | 65 | 14.5 | 0.002 | 2.30 |
| 20～24 | 38～52 | 70 | 16.5 | |||||||
| 25～28 | 44～62 | 75 | 20.5 | |||||||
| ZLD2 | 0.25 | 5000 | 25～28 | 44～62 | 92 | 50 | 88 | 20.5 | 0.004 | 3.98 |
| 30～32 | 60～82 | 92 | 24.5 | |||||||
| ZLD3 | 0.63 | 4500 | 30～38 | 60～82 | 118 | 65 | 115 | 25 | 0.016 | 10.30 |
| 40～42 | 84～112 | 125 | 31 | |||||||
| ZLD4 | 1.8 | 4200 | 40～56 | 84～112 | 158 | 90 | 145 | 32 | 0.061 | 22.46 |
| 60 | 107～142 | 152 | 39 | |||||||
| ZLD5 | 4.5 | 4000 | 50～56 | 84～112 | 192 | 120 | 145 | 32 | 0.143 | 31.71 |
| 60～75 | 107～142 | 152 | 39 | |||||||
| 80 | 132～172 | 158 | 44 | |||||||
| ZLD6 | 8 | 3300 | 60～75 | 107～142 | 230 | 130 | 175 | 40 | 0.312 | 48.16 |
| 80～95 | 132～172 | 178 | 45 | |||||||
| ZLD7 | 11.2 | 2900 | 70～75 | 107～142 | 260 | 160 | 178 | 40 | 0.570 | 69.42 |
| 80～95 | 132～172 | 182 | 45 | |||||||
| 100～110 | 167～212 | 188 | 50 | |||||||
| ZLD8 | 18 | 2500 | 80～95 | 132～172 | 300 | 190 | 202 | 46 | 1.105 | 108.8 |
| 100～125 | 167～212 | 208 | 51 | |||||||
| 130 | 202～252 | 212 | 56 | |||||||
| ZLD9 | 25 | 2300 | 90～95 | 132～172 | 335 | 220 | 232 | 47 | 2.157 | 157.5 |
| 100～125 | 167～212 | 238 | 52 | |||||||
| 130～150 | 202～252 | 242 | 57 | |||||||
| ZLD10 | 31.5 | 2100 | 100～125 | 167～212 | 355 | 245 | 240 | 53 | 2.926 | 188.5 |
| 130～150 | 202～252 | 245 | 58 | |||||||
| 160～170 | 242～302 | 255 | 68 | |||||||
| ZLD11 | 40 | 2000 | 110～125 | 167～212 | 380 | 260 | 260 | 53 | 4.021 | 225.0 |
| 130～150 | 202～252 | 265 | 58 | |||||||
| 160～180 | 242～302 | 275 | 68 | |||||||
| ZLD12 | 63 | 1700 | 130～150 | 202～252 | 445 | 290 | 282 | 58 | 8.051 | 335.2 |
| 160～180 | 242～302 | 292 | 68 | |||||||
| 190～200 | 282～352 | 302 | 78 | |||||||
| ZLD13 | 100 | 1500 | 150 | 202～252 | 515 | 345 | 313 | 58 | 16.514 | 524.5 |
| 160～180 | 242～302 | 323 | 68 | |||||||
| 190～220 | 282～352 | 332 | 78 |
Engineering Context
This model is best understood from its own construction: Taper-bore flexible pin gear coupling; Resilient pins combined with gear-tooth torque transmission; Taper fit, key and bore dimensions are drawing-controlled 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 taper angle/fit, key, bore length and shaft-end details
- Check torque, speed, pin access, lubrication, inertia and guard clearance
- Send the exact model row, assembly drawing and actual duty data with the inquiry.
Product FAQ
What is special about ZLD installation?
The taper-bore fit and keying must match the shaft before the flexible pin gear assembly is mounted.
Can a straight-bore ZL hub replace ZLD?
No. The bore interface and mounting method are different.
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.
