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Zero Backlash Couplings
 
PCR Flexible Beam Coupling - Aluminum
P-Series Aluminum Four Beam Couplings
P-Series Stainless Steel Four Beam Couplings
F-Series Aluminum Six Beam Couplings
F-Series Stainless Steel Six Beam Couplings
M-Series Four Beam Couplings
 

PART NUMBER BORE B1 (in) BORE B2 (in) OD (in) LENGTH (in) CAP SCREW SHAFT PENETRATION (in) STATIC TORQUE (lb-in) WIND-UP (Deg/lb-in) MISALIGNMENT
ANGULAR PARALLEL AXIAL MOTION
PCR6
1.5
(.0938)
1.5
(.0938)
0.375 0.563 M1.6 0.235
5.5
1.34
3° 0.008 0.005
PCR8
1.5
(.0938)
2
(.1250)
1.5
(.0938)
2
(.1250)
0.500 0.750 M2 0.265
8
8
0.75
0.75
3° 0.008 0.005
PCR10
2
(.1250)
2.5
(0.1563)
3
(0.1875)
2
(.1250)
2.5
(0.1563)
3
(0.1875)
0.625 0.800 M2 0.336
15
12
12
0.36
0.54
0.54
3° 0.008 0.005
PCR12
2
(.1250)
2.5
(0.1563)
3
(0.1875)
4
(0.2500)
2
(.1250)
2.5
(0.1563)
3
(0.1875)
4
(0.2500)
0.750 0.900 M2.5 0.386
26
17
17
14
0.18
0.26
0.26
0.33
3° 0.008 0.005
PCR14
3
(0.1875)
4
(0.2500)
5
(0.3125)
3
(0.1875)
4
(0.2500)
5
(0.3125)
0.875 1.063 M3 0.450
20
18
16
0.17
0.21
0.27
3° 0.008 0.005
PCR16
4
(0.2500)
5
(0.3125)
6
(0.3750)
4
(0.2500)
5
(0.3125)
6
(0.3750)
1.000 1.250 M4 0.545
36
33
30
0.16
0.18
0.20
3° 0.015 0.010
PCR18
4
(0.2500)
5
(0.3125)
6
(0.3750)
8
(0.5000)
4
(0.2500)
5
(0.3125)
6
(0.3750)
8
(0.5000)
1.125 1.500 M4 0.670
47
44
40
34
0.10
0.11
0.14
0.22
3° 0.015 0.010
PCR20
4
(0.2500)
5
(0.3125)
6
(0.3750)
8
(0.5000)
4
(0.2500)
5
(0.3125)
6
(0.3750)
8
(0.5000)
1.250 1.500 M4 0.670
68
64
60
52
0.06
0.06
0.07
0.12
3° 0.015 0.010


Note 1 Static torque ratings are at maximum misalignment. To obtain dynamic rating, static ratings should be divided by 2 for non-reversing applications and by 4 for reversing applications.
Note 2 Hardware is alloy steel with black oxide finish. PCR series parts have socketed head cap screws on each end.
Note 3 Performance ratings are for guidance only. The user must determine suitability for a particular application.

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