Large misalignments can be absorbed at high transmission torques by using an element (polyurethane elastomer) with a hardness of 97 JIS A, a shape that has a loose-fit construction, and giving the torque transmission surface of the element a crowning shape.
Features
Specifications
Structure and Materials
Downloads
Optimal design thanks to 3D-CAD and FEM analysis
The latest CAE system was used from the initial stages of design.These models were designed using 3D-CAD. Shape and hardness was designed using the support of the latest finite element method (FEM) analysis software for optimal designs.
High transmission torque achieved and mounting error reaction force reduced by optimal design of element shape
They achieve more than double the transmission torque of older jaw couplings for the same outer diameter thanks to improved torque transmission component shapes and rigorous selection of materials.
Can be freely combined
Select from among three types of hubs: pilot-bore types that can be freely drilled with bores, key/set screw types, and clamp types.Key/set screw types and clamp types can also be combined.
ALS B Types (key/set screw type)
[Specifications]
| Model | Torque | Misalignment | Max. rotation speed ［min-1］ | Static torsional stiffness ［N・m/rad］ | Radial stiffness ［N/mm］ | Moment of inertia ［kg・m2］ | Mass ［kg］ | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal ［N・m］ | Max. ［N・m］ | Parallel ［mm］ | Angular ［°］ | Axial ［mm］ | ||||||
| ALS-030-B | 12.5 | 25 | 0.17 | 1 | －0.2 to ＋1.0 | 15900 | 90 | 460 | 6.13×10-6 | 0.045 |
| ALS-040-B | 17 | 34 | 0.20 | 1 | －0.5 to ＋1.2 | 11900 | 400 | 640 | 3.86×10-5 | 0.15 |
| ALS-055-B | 60 | 120 | 0.22 | 1 | －0.2 to ＋1.4 | 8700 | 1150 | 400 | 1.66×10-4 | 0.35 |
| ALS-065-B | 160 | 320 | 0.25 | 1 | －0.6 to ＋1.5 | 7400 | 2000 | 800 | 3.57×10-4 | 0.51 |
| ALS-080-B | 325 | 650 | 0.28 | 1 | －0.9 to ＋1.8 | 6000 | 4550 | 600 | 1.06×10-3 | 1.01 |
| ALS-095-B | 450 | 900 | 0.32 | 1 | －0.5 to ＋2.0 | 5000 | 12000 | 800 | 2.22×10-3 | 1.48 |
| ALS-105-B | 525 | 1050 | 0.36 | 1 | －0.9 to ＋2.0 | 4500 | 15000 | 2000 | 3.70×10-3 | 2.02 |
*Max. rotation speed does not take into account dynamic balance.
*Stiffness values given are from measurements taken at 20℃.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
| Model | d1, d2 | D | L | L1, L2 | E | S | C | ||
|---|---|---|---|---|---|---|---|---|---|
| Pilot bore | Min. | Max. | |||||||
| ALS-030-B | 5 | 6 | 14 | 30 | 35 | 11 | 13 | 1.5 | 5.5 |
| ALS-040-B | 5 | 8 | 22 | 40 | 66 | 25 | 16 | 2 | 12.5 |
| ALS-055-B | 5 | 10 | 28 | 55 | 78 | 30 | 18 | 2 | 15 |
| ALS-065-B | 5 | 14 | 38 | 65 | 90 | 35 | 20 | 2.5 | 17.5 |
| ALS-080-B | 10 | 19 | 45 | 80 | 114 | 45 | 24 | 3 | 22.5 |
| ALS-095-B | 8 | 19 | 55 | 95 | 126 | 50 | 26 | 3 | 25 |
| ALS-105-B | 10 | 19 | 60 | 105 | 140 | 56 | 28 | 3.5 | 28 |
*"Pilot bore" refers to center processing.
[Standard bore diameter]
| Model | Standard bore diameter d1, d2 ［mm］ | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 6.35 | 7 | 8 | 9 | 9.525 | 10 | 11 | 12 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 55 | 56 | 60 | |
| ALS-030-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||||||||
| ALS-040-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||||
| ALS-055-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||||
| ALS-065-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||||||
| ALS-080-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||||||||||||||||
| ALS-095-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||||
| ALS-105-B | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||||||||
*The bore diameters marked with ● are supported as standard bore diameter.
*ø11 and below have no keyway; ø12 and above can be processed for old JIS standards, new JIS standards, and new standard motors.
ALS B Types (clamp types)
[Specifications]
| Model | Misalignment | Max. rotation speed ［min-1］ | Static torsional stiffness ［N・m/rad］ | Radial stiffness ［N/mm］ | Moment of inertia ［kg・m2］ | Mass ［kg］ | ||
|---|---|---|---|---|---|---|---|---|
| Parallel ［mm］ | Angular ［°］ | Axial ［mm］ | ||||||
| ALS-030-B | 0.17 | 1 | －0.2 to ＋1.0 | 10000 | 90 | 460 | 6.07×10-6 | 0.043 |
| ALS-040-B | 0.2 | 1 | －0.5 to ＋1.2 | 10000 | 400 | 640 | 4.00×10-5 | 0.16 |
| ALS-055-B | 0.22 | 1 | －0.2 to ＋1.4 | 7000 | 1,150 | 400 | 1.63×10-4 | 0.34 |
| ALS-065-B | 0.25 | 1 | －0.6 to ＋1.5 | 5900 | 2,000 | 800 | 3.69×10-4 | 0.54 |
| ALS-080-B | 0.28 | 1 | －0.9 to ＋1.8 | 4800 | 4,550 | 600 | 1.04×10-3 | 1.00 |
*Max. rotation speed does not take into account dynamic balance.
*Stiffness values given are from measurements taken at 20℃.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
| Model | d1, d2 | D | DB | L | L1, L2 | E | S | B | G | M | Tightening torque ［N・m］ | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. | Max. | |||||||||||
| ALS-030-B | 6 | 14 | 30 | 30 | 35 | 11 | 13 | 1.5 | 5.5 | 10.5 | 1-M3 | 1.5 |
| ALS-040-B | 8 | 20 | 40 | 43.2 | 66 | 25 | 16 | 2 | 12.5 | 15 | 1-M5 | 7 |
| ALS-055-B | 10 | 28 | 55 | 55 | 78 | 30 | 18 | 2 | 10.5 | 20 | 1-M6 | 14 |
| ALS-065-B | 14 | 35 | 65 | 69.8 | 90 | 35 | 20 | 2.5 | 11.5 | 24.5 | 1-M8 | 30 |
| ALS-080-B | 19 | 45 | 80 | 80 | 114 | 45 | 24 | 3 | 11.5 | 30 | 1-M8 | 30 |
*The øDB value is measured assuming that the head of the clamping bolt is larger than the external diameter of the hub.
*The nominal diameter for the clamping bolt M is equal to the quantity minus the nominal diameter of the screw threads, where the quantity is for a hub on one side.
Standard bore diameter and allowable transmission torque
| Model | Standard bore diameters d1, d2 ［mm］ and rated transmission torque ［N・m］ | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 6.35 | 7 | 8 | 9 | 9.525 | 10 | 11 | 12 | 14 | 15 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 38 | 40 | 42 | 45 | |
| ALS-030-B | 2.0 | 2.2 | 2.7 | 3.4 | 4 | 4.4 | 4.7 | 5.4 | 6.0 | 7.4 | ||||||||||||||||
| ALS-040-B | 8 | 12 | 14 | 16 | 19 | 23 | 31 | 34 | 34 | 34 | 34 | 34 | ||||||||||||||
| ALS-055-B | 21 | 25 | 28 | 35 | 38 | 41 | 48 | 51 | 54 | 61 | 67 | 71 | 80 | |||||||||||||
| ALS-065-B | 40 | 44 | 47 | 54 | 58 | 61 | 68 | 75 | 79 | 89 | 96 | 103 | 114 | |||||||||||||
| ALS-080-B | 53 | 59 | 72 | 84 | 90 | 108 | 121 | 133 | 151 | 170 | 182 | 194 | 212 | |||||||||||||
*Bore diameters whose fields contain numbers are supported as the standard bore diameters.
*Bore diameters whose fields contain numbers are restricted in their rated transmission torque by the holding power of the shaft connection component. The numbers indicate the rated transmission torque value [N·m].
*The recommended processing tolerance for paired mounting shafts is the h7 class. However, for a bore diameter of ø35, the shaft tolerance is -0.025 to +0.010.
*Bore diameters between the minimum and maximums shown in the dimensions table are compatible, but bore diameters other than those shown in the above table require other arrangements. Contact Miki Pulley for details.
[Standard bore diameter]
| Model | F | R3 |
|---|---|---|
| ALS-030-B-EL | 10.2 | 10.5 |
| ALS-040-B-EL | 12 | 18.5 |
| ALS-055-B-EL | 14 | 27.5 |
| ALS-065-B-EL | 15 | 32 |
| ALS-080-B-EL | 18 | 41 |
| ALS-095-B-EL | 20 | 47 |
| ALS-105-B-EL | 21 | 50 |
[Standard Hole-drilling Standards]
| Models compliant with the old JIS standards (class 2) | Models compliant with the new JIS standards (H9) | Models compliant with the new JIS standards (JS9) | Models compliant with the new motor standards | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal bore diameter | Bore diameter [d1・d2] | Keyway width [W1・W2] | Keyway height [T1・T2] | Set screw hole [M] | Nominal bore diameter | Bore diameter [d1・d2] | Keyway width [W1・W2] | Keyway height [T1・T2] | Set screw hole [M] | Nominal bore diameter | Bore diameter [d1・d2] | Keyway width [W1・W2] | Keyway height [T1・T2] | Set screw hole [M] | Nominal bore diameter | Bore diameter [d1・d2] | Keyway width [W1・W2] | Keyway height [T1・T2] | Set screw hole [M] |
| Tolerance | H7,H8 | E9 | +0.30 | － | Tolerance | H7 | H9 | +0.30 | － | Tolerance | H7,H8 | JS9 | +0.30 | － | Tolerance | G7,F7 | H9 | +0.30 | － |
| 3 | 3+0.0180 | － | － | 1-M3 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 4 | 4+0.0180 | － | － | 2-M3 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 5 | 5+0.0180 | － | － | 2-M3 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 6 | 6+0.0180 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 6.35 | 6.35+0.0220 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 7 | 7+0.0220 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 8 | 8+0.0220 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 9 | 9+0.0220 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 9.525 | 9.525+0.0220 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 10 | 10+0.0220 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 11 | 11+0.0180 | － | － | 2-M4 | － | － | － | － | － | － | － | － | － | － | － | － | － | － | － |
| 12 | 12+0.0180 | 4+0.050+0.020 | 13.5 | 2-M4 | 12H | 12+0.0180 | 4+0.0300 | 13.8 | 2-M4 | 12J | 12+0.0180 | 4±0.0150 | 13.8 | 2-M4 | － | － | － | － | － |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16.0 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 16.3 | 2-M4 | 14J | 14+0.0180 | 5±0.0150 | 16.3 | 2-M4 | 14N | 14+0.024+0.006 | 5+0.0300 | 16.3 | 2-M4 |
| 15 | 15+0.0180 | 5+0.050+0.020 | 17.0 | 2-M4 | 15H | 15+0.0180 | 5+0.0300 | 17.3 | 2-M4 | 15J | 15+0.0180 | 5±0.0150 | 17.3 | 2-M4 | － | － | － | － | － |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18.0 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 18.3 | 2-M4 | 16J | 16+0.0180 | 5±0.0150 | 18.3 | 2-M4 | － | － | － | － | － |
| 17 | 17+0.0180 | 5+0.050+0.020 | 19.0 | 2-M4 | 17H | 17+0.0180 | 5+0.0300 | 19.3 | 2-M4 | 17J | 17+0.0180 | 5±0.0150 | 19.3 | 2-M4 | － | － | － | － | － |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20.0 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 20.8 | 2-M5 | 18J | 18+0.0180 | 6±0.0150 | 20.8 | 2-M5 | － | － | － | － | － |
| 19 | 19+0.0210 | 5+0.050+0.020 | 21.0 | 2-M4 | 19H | 19+0.0210 | 6+0.0300 | 21.8 | 2-M5 | 19J | 19+0.0210 | 6±0.0150 | 21.8 | 2-M5 | 19N | 19+0.028+0.007 | 6+0.0300 | 21.8 | 2-M5 |
| 20 | 20+0.0210 | 5+0.050+0.020 | 22.0 | 2-M4 | 20H | 20+0.0210 | 6+0.0300 | 22.8 | 2-M5 | 20J | 20+0.0210 | 6±0.0150 | 22.8 | 2-M5 | － | － | － | － | － |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25.0 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 24.8 | 2-M5 | 22J | 22+0.0210 | 6±0.0150 | 24.8 | 2-M5 | － | － | － | － | － |
| 24 | 24+0.0210 | 7+0.061+0.025 | 27.0 | 2-M6 | 24H | 24+0.0210 | 8+0.0360 | 27.3 | 2-M6 | 24J | 24+0.0210 | 8±0.0180 | 27.3 | 2-M6 | 24N | 24+0.028+0.007 | 8+0.0360 | 27.3 | 2-M6 |
| 25 | 25+0.0210 | 7+0.061+0.025 | 28.0 | 2-M6 | 25H | 25+0.0210 | 8+0.0360 | 28.3 | 2-M6 | 25J | 25+0.0210 | 8±0.0180 | 28.3 | 2-M6 | － | － | － | － | － |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31.0 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 31.3 | 2-M6 | 28J | 28+0.0210 | 8±0.0180 | 31.3 | 2-M6 | 28N | 28+0.028+0.007 | 8+0.0360 | 31.3 | 2-M6 |
| 30 | 30+0.0210 | 7+0.061+0.025 | 33.0 | 2-M6 | 30H | 30+0.0210 | 8+0.0360 | 33.3 | 2-M6 | 30J | 30+0.0210 | 8±0.0180 | 33.3 | 2-M6 | － | － | － | － | － |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 35.3 | 2-M8 | 32J | 32+0.0250 | 10±0.0180 | 35.3 | 2-M8 | － | － | － | － | － |
| 35 | 35+0.0250 | 10+0.061+0.025 | 38.5 | 2-M8 | 35H | 35+0.0250 | 10+0.0360 | 38.3 | 2-M8 | 35J | 35+0.0250 | 10±0.0180 | 38.3 | 2-M8 | － | － | － | － | － |
| 38 | 38+0.0250 | 10+0.061+0.025 | 41.5 | 2-M8 | 38H | 38+0.0250 | 10+0.0360 | 41.3 | 2-M8 | 38J | 38+0.0250 | 10±0.0180 | 41.3 | 2-M8 | 38N | 38+0.050+0.025 | 10+0.0360 | 41.3 | 2-M8 |
| 40 | 40+0.0250 | 10+0.061+0.025 | 43.5 | 2-M8 | 40H | 40+0.0250 | 12+0.0430 | 43.3 | 2-M8 | 40J | 40+0.0250 | 12±0.0215 | 43.3 | 2-M8 | － | － | － | － | － |
| 42 | 42+0.0250 | 12+0.075+0.032 | 45.5 | 2-M8 | 42H | 42+0.0250 | 12+0.0430 | 45.3 | 2-M8 | 42J | 42+0.0250 | 12±0.0215 | 45.3 | 2-M8 | 42N | 42+0.050+0.025 | 12+0.0430 | 45.3 | 2-M8 |
| 45 | 45+0.0250 | 12+0.075+0.032 | 48.5 | 2-M8 | 45H | 45+0.0250 | 14+0.0430 | 48.8 | 2-M10 | 45J | 45+0.0250 | 14±0.0215 | 48.8 | 2-M10 | － | － | － | － | － |
| 48 | 48+0.0250 | 12+0.075+0.032 | 51.5 | 2-M8 | 48H | 48+0.0250 | 14+0.0430 | 51.8 | 2-M10 | 48J | 48+0.0250 | 14±0.0215 | 51.8 | 2-M10 | 48N | 48+0.050+0.025 | 14+0.0430 | 51.8 | 2-M10 |
| 50 | 50+0.0250 | 12+0.075+0.032 | 53.5 | 2-M8 | 50H | 50+0.0250 | 14+0.0430 | 53.8 | 2-M10 | 50J | 50+0.0250 | 14±0.0215 | 53.8 | 2-M10 | － | － | － | － | － |
| 55 | 55+0.0300 | 15+0.075+0.032 | 60.0 | 2-M10 | 55H | 55+0.0300 | 16+0.0430 | 59.3 | 2-M10 | 55J | 55+0.0300 | 16±0.0215 | 59.3 | 2-M10 | 55N | 55+0.060+0.030 | 16+0.0430 | 59.3 | 2-M10 |
| 56 | 56+0.0300 | 15+0.075+0.032 | 61.0 | 2-M10 | 56H | 56+0.0300 | 16+0.0430 | 60.3 | 2-M10 | 56J | 56+0.0300 | 16±0.0215 | 60.3 | 2-M10 | － | － | － | － | － |
| 60 | 60+0.0300 | 15+0.075+0.032 | 65.0 | 2-M10 | 60H | 60+0.0300 | 18+0.0430 | 64.4 | 2-M10 | 60J | 60+0.0300 | 18±0.0215 | 64.4 | 2-M10 | 60N | 60+0.060+0.030 | 18+0.0430 | 64.4 | 2-M10 |
*Tolerance will be h8 class for hole diameter equal to or less than ø10 mm.
* The set screw size is M3 for ALS-014.
[Distance from set screw edge]
| Model | ALS-014 | ALS-020 | ALS-030 | ALS-040 | ALS-055 | ALS-065 | ALS-080 | ALS-095 | ALS-105 |
|---|---|---|---|---|---|---|---|---|---|
| Distance from set screw edge C ［mm］ | 3.5 | 5 | 5.5 | 12.5 | 15 | 17.5 | 22.5 | 25 | 28 |
Pilot Bore
Key/Set Screw Type
Clamp Type
Download 3D CAD
| ALS-030-B | clamp types | (Shaft bore diameter[d1]:6~14 Shaft bore diameter[d2]:6~14) |  |
| ALS-030-B | key/set screw type | (Shaft bore diameter[d1]:6~14 Shaft bore diameter[d2]:6~14) | |
| ALS-040-B | clamp types | (Shaft bore diameter[d1]:8~20 Shaft bore diameter[d2]:8~20) | |
| ALS-040-B | key/set screw type | (Shaft bore diameter[d1]:8~22 Shaft bore diameter[d2]:8~22) | |
| ALS-055-B | clamp types | (Shaft bore diameter[d1]:10~28 Shaft bore diameter[d2]:10~28) | |
| ALS-055-B | key/set screw type | (Shaft bore diameter[d1]:10~28 Shaft bore diameter[d2]:10~28) | |
| ALS-065-B | clamp types | (Shaft bore diameter[d1]:14~35 Shaft bore diameter[d2]:14~35) | |
| ALS-065-B | key/set screw type | (Shaft bore diameter[d1]:14~38 Shaft bore diameter[d2]:14~38) | |
| ALS-080-B | clamp types | (Shaft bore diameter[d1]:19~45 Shaft bore diameter[d2]:19~45) | |
| ALS-080-B | key/set screw type | (Shaft bore diameter[d1]:19~45 Shaft bore diameter[d2]:19~45) | |
| ALS-095-B | key/set screw type | (Shaft bore diameter[d1]:19~55 Shaft bore diameter[d2]:19~55) | |
| ALS-105-B | ket/set screw type | (Shaft bore diameter[d1]:19~60 Shaft bore diameter[d2]:19~60) | |