Hebei Z8 Type Expansion Coupling Sleeve

The Z8 type expansion coupling sleeve is suitable for coupling the shaft and the parts on the shaft to transmit torque and axial force.
The Z8 type expansion coupling sleeve transmits large torque for a long time during work, which is easy to cause fatigue deformation of the metal, causing fatigue and wear between the expansion sleeve and the fastener. At the same time, the sintering machine is generally large, which causes difficulty.In response to such problems, polymer composite materials can be used in the field, and the matching relationship between parts, and the operating state and wear of the equipment generally have the corresponding relationship between the parts and the mold technology.
When the Z8 type expansion coupling sleeve is overloaded, the coupling effect will be lost, which can protect the equipment from damage.
Z8 type swelling coupling sleeve has good interchangeability.Since the expansion sleeve can combine the shaft hub with a larger matching gap, the bolts are loosened when disassembling, and the connected parts can be easily disassembled.When swelling, the contact surface is tightly fitted and not rusted, and it is also easy to disassemble.
Features of Z8 type expansion coupling sleeve: Z8 type locking coupling disc Z8 type expansion sleeve is suitable for coupling the shaft and the parts on the shaft to transmit torque and axial force.
Torque moment and axial moment of expansion sleeve
1 Torque Mt refers to the theoretical torque when transmitting pure torque, and the axial force Ft refers to the axial force that can be transmitted when there is no transmission torque.If not only transmitting torque but also transmitting axial force, the synthetic torque Mt1 should be calculated as follows:
Where:
Mt1—synthetic torque, KN.m
Mt —theoretical torque, KN.m
d —Shaft diameter, m
p —the axial force to be transmitted,
KN
2 Bolt tightening torque MA°
The torque Mt and axial force Ft specified in the standard are calculated according to the corresponding screw tension, and the tightening torque of the screw should reach the required rated value in the technical parameter table.
Installation reference example

Parameters of Z8 Type Expansion Coupling Sleeve
| basic size | Socket head cap screws | Rated load | Pressure on joint surface between expansion sleeve and shaft Pf N/mm2 | The pressure on the joint surface between the expansion sleeve and the hub Pf′ N/mm 2 | Screw tightening torque MA N·m | weight kg | |||||||
| d | D | L1 | L2 | L3 | L4 | d 1 | n | Axial force F1 KN | Torque M1 KN·m | ||||
| mm | |||||||||||||
| 20 | 47 | 17 | 22 | 28 | 34 | M6 × 20 | 5 | 30 | 0.29 | 220 | 95 | 17 | 0.25 |
| 22 | 47 | 17 | 22 | 28 | 34 | M6 × 20 | 5 | 30 | 0.32 | 200 | 95 | 0.25 | |
| 24 | 50 | 17 | 22 | 28 | 34 | M6 × 20 | 5 | 30 | 0.37 | 200 | 95 | 0.27 | |
| 25 | 50 | 17 | 22 | 28 | 34 | M6 × 20 | 6 | 36 | 0.45 | 215 | 110 | 0.27 | |
| 28 | 55 | 17 | 22 | 28 | 34 | M6 × 20 | 6 | 36 | 0.50 | 200 | 100 | 0.32 | |
| 30 | 55 | 17 | 22 | 28 | 34 | M6 × 20 | 6 | 36 | 0.54 | 190 | 100 | 0.35 | |
| 32 | 60 | 17 | 22 | 28 | 34 | M6 × 20 | 8 | 48 | 0.77 | 215 | 115 | 0.37 | |
| 35 | 60 | 17 | 22 | 28 | 34 | M6 × 20 | 8 | 48 | 0.84 | 190 | 110 | 0.34 | |
| 38 | 65 | 17 | 22 | 28 | 34 | M6 × 20 | 8 | 48 | 0.91 | 195 | 115 | 0.40 | |
| 40 | 65 | 17 | 22 | 28 | 34 | M6 × 20 | 8 | 48 | 0.96 | 190 | 105 | 0.38 | |
| 45 | 75 | 20 | 25 | 33 | 41 | M8 × 25 | 7 | 77 | 1.75 | 230 | 135 | 41 | 0.63 |
| 50 | 80 | 20 | 25 | 33 | 41 | M8 × 25 | 7 | 77 | 1.93 | 210 | 130 | 0.68 | |
| 55 | 85 | 20 | 25 | 33 | 41 | M8 × 25 | 8 | 88 | 2.45 | 215 | 135 | 0.73 | |
| 60 | 90 | 20 | 25 | 33 | 41 | M8 × 25 | 8 | 88 | 2.70 | 190 | 125 | 0.78 | |
| 63 | 95 | 20 | 25 | 33 | 41 | M8 × 25 | 9 | 100 | 3.18 | 205 | 140 | 0.89 | |
| 65 | 95 | 20 | 25 | 28 | 41 | M8 × 25 | 9 | 100 | 3.25 | 200 | 135 | 0.83 | |
| 70 | 110 | 24 | 30 | 40 | 50 | M10 × 30 | 8 | 141 | 5.00 | 220 | 140 | 83 | 1.33 |
| 75 | 115 | 24 | 30 | 40 | 50 | M10 × 30 | 8 | 141 | 5.25 | 200 | 130 | 1.40 | |
| 80 | 120 | 24 | 30 | 40 | 50 | M10 × 30 | 8 | 141 | 5.60 | 190 | 125 | 1.48 | |
| 85 | 125 | 24 | 30 | 40 | 50 | M10 × 30 | 9 | 159 | 6.75 | 200 | 135 | 1.55 | |
| 90 | 130 | 24 | 30 | 40 | 50 | M10 × 30 | 9 | 159 | 7.10 | 190 | 130 | 1.63 | |
| 95 | 135 | 24 | 30 | 40 | 50 | M10 × 30 | 10 | 176 | 8.35 | 200 | 140 | 1.70 | |
| 100 | 145 | 26 | 32 | 44 | 56 | M12 × 30 | 8 | 205 | 10.30 | 210 | 145 | 145 | 2.60 |
| 110 | 155 | 26 | 32 | 44 | 56 | M12 × 30 | 8 | 205 | 11.25 | 190 | 135 | 2.80 | |
| 120 | 165 | 26 | 32 | 44 | 56 | M12 × 30 | 9 | 231 | 13.9 | 210 | 145 | 3.00 | |
| 130 | 180 | 34 | 40 | 52 | 64 | M12 × 30 | 12 | 308 | 20.00 | 190 | 140 | 4.60 | |
| 140 | 190 | 34 | 40 | 54 | 68 | M14 × 40 | 9 | 317 | 22.25 | 180 | 130 | 230 | 4.90 |
| 150 | 200 | 34 | 40 | 54 | 68 | M14 × 40 | 10 | 352 | 26.3 | 190 | 140 | 5.20 | |
| 160 | 210 | 34 | 40 | 54 | 68 | M14 × 40 | 11 | 287 | 31.0 | 190 | 145 | 5.50 | |
| 170 | 225 | 44 | 40 | 64 | 78 | M14 × 40 | 12 | 422 | 35.9 | 150 | 115 | 7.75 | |
| 180 | 235 | 44 | 50 | 64 | 78 | M14 × 40 | 12 | 422 | 38.0 | 145 | 110 | 8.15 | |
| 190 | 250 | 44 | 50 | 64 | 78 | M14 × 40 | 15 | 528 | 50.1 | 170 | 130 | 9.50 | |
| 200 | 260 | 44 | 50 | 64 | 78 | M14 × 40 | 15 | 528 | 52.8 | 160 | 125 | 9.90 | |
| 220 | 285 | 50 | 56 | 72 | 88 | M16 × 40 | 12 | 587 | 64.5 | 145 | 110 | 355 | 13.40 |
| 240 | 305 | 50 | 56 | 72 | 88 | M16 × 40 | 15 | 734 | 88 | 165 | 130 | 14.30 | |
| 260 | 325 | 50 | 56 | 72 | 88 | M16 × 40 | 18 | 880 | 114 | 180 | 145 | 15.50 | |
| 280 | 355 | 60 | 66 | 84 | 102 | M18 × 50 | 16 | 948 | 132 | 150 | 120 | 485 | 22.90 |
| 300 | 375 | 60 | 66 | 84 | 102 | M18 × 50 | 18 | 1059 | 159 | 160 | 125 | 24.40 | |
| 320 | 405 | 74 | 81 | 101 | 121 | M20 × 50 | 18 | 1374 | 220 | 150 | 120 | 690 | 36.10 |
| 340 | 425 | 74 | 81 | 101 | 121 | M20 × 50 | 21 | 1603 | 272.5 | 175 | 135 | 38.40 | |
| 360 | 455 | 86 | 94 | 116 | 138 | M22 × 60 | 18 | 1710 | 308 | 140 | 110 | 930 | 46.20 |
| 380 | 475 | 86 | 94 | 116 | 138 | M22 × 60 | 21 | 1995 | 379 | 155 | 125 | 55.00 | |
| 400 | 495 | 86 | 94 | 116 | 138 | M22 × 60 | 21 | 1995 | 399 | 150 | 120 | 61.00 | |
| Note: The mechanical performance level of Z8 type expansion coupling set screws is 12.9. | |||||||||||||
Hebei Z8 Type Expansion Coupling Sleeve Hebei Z8 Type Expansion Coupling Sleeve
