Motion Control Couplings
STAINLESS BELLOWS | ALUMINUM DISC MEMBRANE | OLDHAM COUPLING
UNIVERSAL LATERAL COUPLING | MULTI BEAM COUPLING | MINI JAW COUPLING
COMPARISON CHART
| UNIVERSAL/LATERAL COUPLINGS
This unique design is a crossbreed between a universal joint and the Oldham coupling. The uni-lat coupler provides radial displacment along with pivoting within a very short envelope. Its unique property is the capacity to locate and axially-unrestrained shaft and to provide push/pull action. This property is particularly useful in low-cost linear mechanisms where one end of a light lead screw is located by a plain bearing which allows end-float. The uni-lat removes this lead screw error and helps to improve positional accuracy. Hubs are constructed from brass or aluminum, while the connecting torque ring is made from acetal. |
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(at 68°F)
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Coupler Size |
Peak IN# |
Misalignment |
Torsional |
Axial |
Static break torque IN# |
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| Angular ± deg |
Radial ± in. |
Rate deg/IN# |
Stiffness IN#/rad |
Max loading±lb |
Stiffness lb/0.001" |
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| 18 | 2.6 |
2 |
0.008 | 0.260 | 220 | 4.3 | 0.885 | 8 |
| 27 | 15 | 0.008 | 0.070 | 810 | 7.0 | 1.998 | 44 | |
| 34 | 22 | 0.010 | 0.044 | 1290 | 7.6 | 1.712 | 66 | |
| 41 | 31 | 0.010 | 0.022 | 2645 | 8.8 | 1.427 | 92 | |
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Coupler Size |
Set Screw Hubs | Clamp Hubs |
ØD in. |
L in. |
L1 in. |
L2 in. |
ØB1,ØB2 in. |
Fasteners |
Moment of inertia lb. in2x 10-5 |
Mass lb. |
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Screw |
Torque IN# |
Wrench |
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Coupler Ref |
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| 18 | 201.18xxU | -- | 0.71 | 0.56 | 0.18 | 0.20 | 0.1969 (5mm) | M3 | 8.3 | 1/16 | 69 | 0.015 |
| 203.18xxU | -- | 0.75 | 0.28 | 0.2500 | ||||||||
| -- | 207.18xx219 | 0.75 | 4-40 | 20.6 | 5/64 | 187 | 0.024 | |||||
| 27 | 201.27xxU | -- | 1.10 | 0.75 | 0.24 | 0.27 | 0.3150 (8mm) | M3 | 8.3 | 1/16 | 312 | 0.035 |
| 203.27xxU | -- | 1.00 | 0.37 | 0.3937 (10mm) | ||||||||
| -- | 470.19 | M3 | 21.5 | 3/32 | 750 | 0.057 | ||||||
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34 |
201.34 | -- | 1.33 | 0.99 | 0.32 | 0.35 | 0.3937 (10mm) | M4 | 20.0 | 5/64 | 562 | 0.037 |
| 203.34 | -- | 1.21 | 0.43 | 0.5000 | ||||||||
| -- | 206.34 | 0.3937 (10mm) | 4-40 | 20.6 | 625 | 0.044 | ||||||
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41 |
201.41 | -- |
1.63 |
1.12 | 0.34 |
0.44 |
0.5000 | M4 | 20.0 | 5/64 |
1625 |
0.066 |
| 203.41xxU | -- |
1.50 |
0.53 |
0.6299 (16mm) | M5 | 40.8 | 3/32 | |||||
| -- | 20.5.41xxU | 0.5000 | M4 | 50.0 | 1/8 | 1875 | 0.088 | |||||
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Coupler |
inch bores +0.0012/-0 |
metric bores +0.03/-0mm |
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Size |
Ref. |
0.125 | 0.1875 | 0.250 | 0.3125 | 0.375 | 0.500 | 0.625 | 3 |
4 |
5 |
6 |
8 |
10 | 12 | 14 | 16 |
| 18 | 201.18 |
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203.18 |
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207.18 |
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| 27 | 201.27 |
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203.27 |
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207.27 |
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| 34 | 201.34 |
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203.34 |
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206.34 |
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| 41 | 201.41 |
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203.41 |
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205.41 |
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| Bore ref. | 16 | 19 | 24 | 27 | 31 | 36 | 41 | 14 | 18 | 20 | 22 | 28 | 32 | 35 | 38 | 42 | |
| Corresponding bore adaptor | 253 | 259 | 251 | 254 255 |
257 | 260 | |||||||||||
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