VIONiC RESM20/REST20 angle encoder system
9
Interference fit method
Mounting shaft specifications
X
Remove the protective film from the surface of the
RESM20/REST20 ring.
X
Clean the mounting faces of the shaft and the
RESM20/REST as recommended in
.
NOTES:
X
Ensure that all screws are tightened to 1.6 Nm.
X
The recommended thread engagement is 6 mm.
X
417, 489 and 550 mm rings should be taper mounted only.
DO
DS
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
X
Insert screws into the remaining mounting holes.
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
X
Rotate the RESM20/REST20 ring, measuring the radial
displacement at all of the screw locations.
X
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 exceeded.
X
Again, rotate the RESM20/REST20 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.
X
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.
X
Excessive tightening of screws can have a small effect
on accuracy. Please contact your local Renishaw
representative for more details.
Step 4
Step 5
DO
= Nominal external diameter.
DS
= Recommended shaft diameter
to enable interference fit.
* 52 mm ‘B’ section ring = 32.033
32.017.