RGH40 RESR
installation guide
8
Step 3
Taper mount method
u
Insert the next screws:
For RESR rings with 6, 9 or 12 mounting holes,
insert all the remaining M3 screws.
For RESR rings with 16 mounting holes,
insert 3 equally spaced M3 screws.
For RESR rings with 18 mounting holes,
insert 6 equally spaced M3 screws.
For RESR rings with 20 mounting holes,
insert 8 equally spaced M3 screws
(in four groups of two) between existing screws.
u
As described in Step 2, adjust all the screws
inserted thus far, so that the radial displacement at
each screw location is within ±5 µm.
u
Again, at this stage, the screws should only be
lightly tightened (less than 0.5 Nm).
NOTE
: You may notice that the torque required to
achieve the radial displacement tolerance will be
slightly higher during step 3 than during step 2.
This is normal.
Taper mount method
Step 4
u
Insert screws into the remaining mounting holes.
u
Rotate the RESR ring, measuring the radial displacement at all of the
screw locations.
u
Tighten the screw with the lowest radial displacement so that it matches
the average radial displacement, whilst ensuring the maximum torque
specified in the table is not exceded.
u
Again, rotate the RESR ring and re-check the radial displacement at
all of the screw locations, tightening the screw with the lowest radial
displacement so that it matches the average.
u
Repeat this process until the radial displacement at all of the screw
locations is within ±3 µm and that all screw torques are within the
specified range.
u
Excessive tightening of screws can have a small effect on accuracy.
Please contact your local representative for more details.
Step 5
Taper mount method
Interference fit method
Mounting shaft specifications.
DO
DS
NOTE:
417, 489 and 550 mm rings
should be taper mounted only.
DO
= Nominal external diameter
DS
= Recommended shaft diameter
to enable interference fit
*
52 mm ‘B’ section ring = 32.033
32.017
Select a mounting option
(continued)
Diameter
(mm)
Recommended
torque range (Nm)
≤
115
1.5 - 2.1
150 to 255
0.8 - 1.1
300 to 413
0.5 - 0.7
≥
417
1.2 - 1.7
DO (mm)
DS (mm)
52
*
30.033
30.017
57
37.033
37.017
75
55.039
55.020
100
80.045
80.023
103
80.045
80.023
104
80.045
80.023
115
95.045
95.023
150
130.052
130.027
200
180.052
180.027
206
186.060
186.031
209
186.060
186.031
229
209.060
209.031
255
235.060
235.031
300
280.066
280.034
350
330.073
330.037
413
392.073
392.037