Our line-up includes the relatively low nominal torque of the ZG and LM models, which have excellent flexibility.The long type of the LM model (the LM-1 type) allows a particularly large angle of deflection of up to 14°. The ZG model uses a zinc alloy as the hub material and spring-steel square wire for the coil spring; the LM model uses an aluminum alloy as the hub material and stainless-steel round wire for the coil spring. Select the type suited to your usage environment.
Structure and Materials
[Specifications]
| Model | Torque | Misalignment | Max. rotation speed ［min-1］ | Torsional stiffness ［N・m/rad］ | Moment of inertia ［kg・m2］ | Mass ［kg］ | |||
|---|---|---|---|---|---|---|---|---|---|
| Nominal ［N・m］ | Max. ［N・m］ | Parallel ［mm］ | Angular ［°］ | Axial ［mm］ | |||||
| LM-6 | 0.5 | 1.0 | 1.0 | 8 | ±1.0 | 6000 | 0.77 | 5.10×10-7 | 0.020 |
| LM-6-1 | 0.5 | 1.0 | 3.0 | 14 | ±1.5 | 6000 | 0.40 | 7.65×10-7 | 0.030 |
| LM-9 | 1.0 | 2.0 | 2.5 | 8 | ±1.0 | 6000 | 1.55 | 2.55×10-6 | 0.050 |
| LM-9-1 | 1.0 | 2.0 | 4.0 | 14 | ±1.5 | 6000 | 0.80 | 3.06×10-6 | 0.060 |
| LM-14 | 2.0 | 4.0 | 3.0 | 8 | ±1.0 | 6000 | 3.10 | 7.65×10-6 | 0.090 |
| LM-14-1 | 2.0 | 4.0 | 4.5 | 14 | ±1.5 | 6000 | 1.60 | 9.44×10-6 | 0.110 |
*Max. rotation speed does not take into account dynamic balance.
*The moment of inertia and mass are measured for the maximum bore diameter.
[Dimensions]
Unit ［mm］
| Model | d1, d2 | D | L | L1 | L2 | F | M | ||
|---|---|---|---|---|---|---|---|---|---|
| Pilot bore | Min. | Max. | |||||||
| LM-6 | 4 | 5 | 6 | 14 | 35 | 12 | 6.5 | 3.5 | M4 |
| LM-6-1 | 4 | 5 | 6 | 14 | 50 | 12 | 6.5 | 3.5 | M4 |
| LM-9 | 5 | 6 | 9 | 20 | 40 | 14 | 7.5 | 4 | M4 |
| LM-9-1 | 5 | 6 | 9 | 20 | 60 | 14 | 7.5 | 4 | M4 |
| LM-14 | 8 | 9 | 14 | 26 | 50 | 17 | 10 | 5 | M5 |
| LM-14-1 | 8 | 9 | 14 | 26 | 70 | 17 | 10 | 5 | M5 |
*Pilot bores are to be drilled into the part.
*Left and right tap positions may be shifted slightly.
[Standard bore diameter]
| Model | Standard bore diameter d1, d2 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 6 | 6.35 | 7 | 8 | 9 | 9.525 | 10 | 11 | 12 | 14 | |
| LM-6(-1) | ● | ● | |||||||||
| LM-9(-1) | ● | ● | ● | ● | ● | ||||||
| LM-14(-1) | ● | ● | ● | ● | ● | ● | |||||
*Standard bore-drilled products do not have keyways. Keyways may be possible under some conditions. Contact Miki Pulley for details.
[Standard Hole-drilling Standards]
Unit ［mm］
| Models compliant with the old JIS standards (Class 2) | Models compliant with the new JIS standards | 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) |
| Tolerance | H7, H8 | E9 | +0.30 | -- | Tolerance | H7 | H9 | +0.30 | -- | Tolerance | G7 | H9 | +0.30 | -- |
| 4 | 4+0.0180 | -- | -- | 2-M3 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 5 | 5+0.0180 | -- | -- | 2-M3 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 6 | 6+0.0180 | -- | -- | 2-M4 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 7 | 7+0.0220 | -- | -- | 2-M4 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 8 | 8+0.0220 | -- | -- | 2-M4 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 9 | 9+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 | -- | -- | -- | -- | -- |
| 14 | 14+0.0180 | 5+0.050+0.020 | 16.0 | 2-M4 | 14H | 14+0.0180 | 5+0.0300 | 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 | -- | -- | -- | -- | -- |
| 16 | 16+0.0180 | 5+0.050+0.020 | 18.0 | 2-M4 | 16H | 16+0.0180 | 5+0.0300 | 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 | -- | -- | -- | -- | -- |
| 18 | 18+0.0180 | 5+0.050+0.020 | 20.0 | 2-M4 | 18H | 18+0.0180 | 6+0.0300 | 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 | 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 | -- | -- | -- | -- | -- |
| 22 | 22+0.0210 | 7+0.061+0.025 | 25.0 | 2-M6 | 22H | 22+0.0210 | 6+0.0300 | 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 | 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 | -- | -- | -- | -- | -- |
| 28 | 28+0.0210 | 7+0.061+0.025 | 31.0 | 2-M6 | 28H | 28+0.0210 | 8+0.0360 | 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 | -- | -- | -- | -- | -- |
| 32 | 32+0.0250 | 10+0.061+0.025 | 35.5 | 2-M8 | 32H | 32+0.0250 | 10+0.0360 | 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 | -- | -- | -- | -- | -- |
*The ø11 or below requirement under the new JIS standards and ø11 requirement for the new motor standards are the same as the old JIS standards (class 2)
Trịnh Nguyễn Thanh Thủy
===============================
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