Installation and Maintenance Instructions
•
Falk Steelflex
®
(Page 6 of 9) Type T10 & T20
428-111
Rexnord Industries, LLC, 5555 S. Moorland Rd., New Berlin, WI 53151-7953
02/2012
Telephone: 262-796-4060 Fax: 262-796-4064
Supersedes manuals 428-110, 112, 210 - 04/2005
e-mail: [email protected] web: www.rexnord.com
8. Shaft alignment
ATTENTION! Soft Foot – The equipment must rest flat on its base. If one or more feet of the machine are shorter, longer, or angled in
some way to prevent uniform contact (a condition commonly known as “soft foot”) it must now be corrected.
ATTENTION! To improve the life of the coupling, the shafts must be aligned to minimize deflection of the flexing grids. Shaft alignment
is required in the axial, parallel, and angular directions, with each of these values not to exceed the recommended installation limits
shown in Tables 4 and 5. Shaft alignment can be measured using various established methods, including Laser Alignment, Reverse
Dial Indicator, and Rim and Face. Refer to Rexnord bulletin 538-214 “Coupling Alignment Fundamentals” for instructions regarding shaft
alignment.
8.1. Close gap coupled couplings
Use an inside micrometer or a spacer bar equal in thickness as shown below at 90° intervals to measure the distance between
hubs to gap specified in Table 3.
8.2. 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 5.
Figure 5 - Angular misalignment
Type T10
Type T20
Table 3 - Gap Dimension
GAP +/- 10%
1020T - 1090T
1100T - 1110T
1120T - 1200T
1210T - 1260T
Inch
0.125
0.188
0.250
0.500
mm
3
5
6
13
Table 4 - Maximum angular misalignment value
Angular
Size
1020T
1030T
1040T
1050T
1060T
1070T
1080T
1090T
1100T
1110T
1120T
1130T
1140T
X-Y
Inch
0.003
0.003
0.003
0.004
0.005
0.005
0.006
0.007
0.008
0.009
0.01
0.012
0.013
mm
0.08
0.08
0.08
0.10
0.13
0.13
0.15
0.18
0.20
0.23
0.25
0.30
0.33
Angular
Size
1150T
1160T
1170T
1180T
1190T
1200T
1210T
1220T
1230T
1240T
1250T
1260T
X-Y
Inch
0.016
0.018
0.020
0.022
0.024
0.027
0.029
0.032
0.035
0.038
0.042
0.046
mm
0.406
0.457
0.508
0.559
0.610
0.686
0.737
0.813
0.889
0.965
1.070
1.170
