Thomas
®
XTSR52 Installation and Maintenance
(Page 9 of 13)
Sizes 494-5258
CP3-002
September 2017
Supersedes 09-2016
Rexnord
5555 S. Moorland Rd., New Berlin, WI 53151-7953
Phone: 262-796-4060 Fax: 262-796-4064 www.rexnord.com
XTSR52
Coupling
Size
“A”
Dimension
“N”
Dimension
“C”
Standard Lengths
(distance between
hub flanges)
Installation
Axial Limits
+/-
Axial Capacity
+/-
Recommended Installation Limits ****
Maximum Coupling Parallel Misalignment
Max Angular
Misalignment
Between Hubs (X-Y)
Parallel Alignment Total
Indictor Reading (TIR)*
(P) Installation Limit
Parallel Offset **
Std Hub
Min.
(in)
Max.
(in)
Min.
(mm)
Max.
(mm)
(in)
(mm)
(in)
(mm)
(in)
(mm)
(in)
(mm)
(in)
(mm)
(in)
(mm)
(in)
(mm)
494
2.76
70.0
0.33
0.35
8.3
8.8
3.50
88.9
0.012
0.30
0.024
0.6
0.011
0.27
0.005
0.13
0.004
0.10
3.75
95.3
0.011
0.29
0.006
0.14
3.94
100.0
0.012
0.30
0.006
0.15
5.00
127.0
0.015
0.38
0.008
0.19
5.51
140.0
0.017
0.42
0.008
0.21
644
3.35
85.0
0.33
0.35
8.3
8.8
3.50
88.9
0.017
0.43
0.033
0.9
0.011
0.27
0.005
0.13
0.004
0.10
3.75
95.3
0.011
0.29
0.006
0.14
3.94
100.0
0.012
0.30
0.006
0.15
5.00
127.0
0.015
0.38
0.008
0.19
5.51
140.0
0.017
0.42
0.008
0.21
726
3.74
95.0
0.33
0.35
8.3
8.8
3.50
88.9
0.026
0.65
0.051
1.3
0.009
0.23
0.005
0.12
0.005
0.13
3.75
95.3
0.010
0.25
0.005
0.12
5.00
127.0
0.013
0.33
0.007
0.17
3.94
100.0
0.010
0.26
0.005
0.13
5.51
140.0
0.014
0.36
0.007
0.18
826
4.25
108.0
0.36
0.38
9.1
9.6
3.50
88.9
0.030
0.75
0.059
1.5
0.009
0.23
0.005
0.12
0.006
0.15
3.75
95.3
0.010
0.25
0.005
0.12
5.00
127.0
0.013
0.33
0.007
0.17
3.94
100.0
0.010
0.26
0.005
0.13
5.51
140.0
0.014
0.36
0.007
0.18
996
5.08
129.0
0.37
0.39
9.3
9.9
4.38
111.3
0.035
0.89
0.070
1.8
0.011
0.29
0.006
0.14
0.007
0.18
5.00
127.0
0.013
0.33
0.007
0.17
3.94
100.0
0.010
0.26
0.005
0.13
5.51
140.0
0.014
0.36
0.007
0.18
7.09
180.0
0.018
0.47
0.009
0.23
1088
5.51
140.0
0.40
0.42
10.1
10.7
4.38
111.3
0.025
0.65
0.051
1.3
0.007
0.19
0.004
0.09
0.005
0.13
4.72
120.0
0.008
0.20
0.004
0.10
5.00
127.0
0.009
0.22
0.004
0.11
5.51
140.0
0.009
0.24
0.005
0.12
7.09
180.0
0.012
0.31
0.006
0.15
1298
6.54
166.0
0.50
0.52
12.6
13.3
4.72
120.0
0.031
0.77
0.061
1.6
0.008
0.20
0.004
0.10
0.006
0.15
5.00
127.0
0.009
0.22
0.004
0.11
5.51
140.0
0.009
0.24
0.005
0.12
7.09
180.0
0.012
0.31
0.006
0.15
1548
7.76
197.0
0.57
0.59
14.4
15.1
5.00
127.0
0.037
0.93
0.073
1.8
0.009
0.22
0.004
0.11
0.007
0.18
7.50
190.5
0.013
0.32
0.006
0.16
8.00
203.2
0.014
0.35
0.007
0.17
5.51
140.0
0.009
0.24
0.005
0.12
7.09
180.0
0.012
0.31
0.006
0.15
9.84
250.0
0.017
0.43
0.008
0.21
1698
8.58
218.0
0.61
0.64
15.4
16.2
7.50
190.5
0.040
1.02
0.080
2.0
0.013
0.32
0.006
0.16
0.008
0.20
8.00
203.2
0.014
0.35
0.007
0.17
7.09
180.0
0.012
0.31
0.006
0.15
9.84
250.0
0.017
0.43
0.008
0.21
1928
9.66
245.4
0.66
0.69
16.7
17.4
7.50
190.5
0.046
1.16
0.091
2.3
0.013
0.32
0.006
0.16
0.009
0.23
8.00
203.2
0.014
0.35
0.007
0.17
9.00
228.6
0.015
0.39
0.008
0.19
7.09
180.0
0.012
0.31
0.006
0.15
9.84
250.0
0.017
0.43
0.008
0.21
2068
10.39
264.0
0.71
0.74
18.0
18.8
7.50
190.5
0.049
1.23
0.097
2.5
0.013
0.32
0.006
0.16
0.010
0.25
8.00
203.2
0.014
0.35
0.007
0.17
9.00
228.6
0.015
0.39
0.008
0.19
7.09
180.0
0.012
0.31
0.006
0.15
9.84
250.0
0.017
0.43
0.008
0.21
2278
11.44
290.5
0.74
0.77
18.8
19.5
9.00
228.6
0.054
1.36
0.107
2.7
0.015
0.39
0.008
0.19
0.011
0.28
9.84
250.0
0.017
0.43
0.008
0.21
2468
12.32
313.0
0.79
0.82
20.1
20.8
9.00
228.6
0.058
1.47
0.116
3.0
0.015
0.39
0.008
0.19
0.012
0.30
9.84
250.0
0.017
0.43
0.008
0.21
2698
13.50
343.0
0.91
0.94
23.0
23.9
9.84
250.0
0.064
1.61
0.127
3.2
0.017
0.42
0.008
0.21
0.013
0.33
2888
14.61
371.0
0.97
1.01
24.7
25.6
9.84
250.0
0.068
1.73
0.136
3.5
0.017
0.43
0.008
0.21
0.014
0.36
3058
15.55
395.0
0.97
1.01
24.7
25.6
9.84
250.0
0.072
1.83
0.144
3.7
0.017
0.43
0.008
0.21
0.015
0.38
3358
16.81
427.0
1.06
1.09
27.0
27.7
9.84
250.0
0.079
2.01
0.158
4.0
0.017
0.43
0.008
0.21
0.016
0.41
3668
18.35
466.0
1.18
1.21
29.9
30.8
15.00
381.0
0.087
2.20
0.173
4.4
0.026
0.65
0.013
0.32
0.018
0.46
3908
19.29
490.0
1.18
1.21
29.9
30.8
15.00
381.0
0.092
2.34
0.184
4.7
0.026
0.65
0.013
0.32
0.019
0.48
4178
20.63
524.0
1.25
1.30
31.9
33.0
15.00
381.0
0.099
2.50
0.197
5.0
0.026
0.65
0.013
0.32
0.020
0.51
4588
23.11
587.0
1.40
1.43
35.5
36.4
18.00
457.2
0.108
2.74
0.216
5.5
0.031
0.78
0.015
0.39
0.022
0.56
4918
24.80
630.0
1.48
1.52
37.6
38.6
18.00
457.2
0.116
2.95
0.232
5.9
0.031
0.78
0.015
0.39
0.024
0.61
5258
26.46
672.0
1.56
1.61
39.7
40.8
18.00
457.2
0.124
3.15
0.248
6.3
0.031
0.78
0.015
0.39
0.025
0.64
Table 4 – Alignment Values
*Parallel Misalignment measured by rotating the hubs with a dial indicator on the outside hub diameter will result in a maximum TIR.
For sizes 494-644 use 0.003 inch per inch of "C" dimension (or 0.010 mm per mm of "C" dimension) for non-standard "C" dimensions. Multiply "C" x 0.003 to calculate the TIR.
For sizes 726-996 use 0.0026 inch per inch of "C" dimension (or 0.008 mm per mm of "C" dimension) for non-standard "C" dimensions. Multiply "C" x 0.0026 to calculate the TIR.
For sizes 1088-5258 use 0.0017 inch per inch of "C" dimension (or 0.004 mm per mm of "C" dimension) for non-standard "C" dimensions. Multiply "C" x 0.0017 to calculate the TIR.
** Parallel Offset "P" is equivalent to one-half of the TIR measurement using dial indicators.
**** During installation and/or operation, do not exceed the maximum misalignment capacity of coupling.
For sizes 494-644 maximum misalignment capacity of coupling is 2/3º per disc pack.
For sizes 726-996 maximum misalignment capacity of coupling is 1/2º per disc pack.
For sizes 1088-5258 maximum misalignment capacity of coupling is 1/3º per disc pack.
Note:
1. Refer to Rexnord Bulletin 538-214 Coupling Alignment Fundamentals for more details regarding alignment methods and procedures.
a. The Angular Misalignment value is the maximum difference between the measurements X and Y taken at opposite ends of the hub flanges,
as shown in Figure 10.
b. The Parallel Misalignment value “P” is the offset between the centers of the hubs, as shown in Figure 8.
