Table of Contents
Advertisement
Select a mounting option
Taper mount
Not applicable
Recommended for all installations
Enables simplest adjustment
Offers highest accuracy
Enables eccentricity to be compensated
Offers excellent mechanical stability against
thermal cycling, shock and vibration.
Minimises cost of substrate preparation
Taper mount method
Step 1
Mounting shaft specifications
7 min
*
1
*
Allow 2 mm for 417 mm, 489 mm and 550 mm rings only
Recommended taper roundness
Recommended taper diameter (DT)
Diameter
Roundness value
(mm)
(mm TIR)
≤ 115
0.025
150 to 255
0.050
≥ 300
0.075
Recommended surface finish
≤ Ra 1.2
NOTE: It is recommended that
the mounting surface is a turned,
rather than ground finish.
RGH40 RESR installation guide
Interference fit
Alternative installation
Will not correct eccentricity of the
supporting shaft
DT
15° ±0.2°
DO
DT
DO
DT
(mm)
(mm)
(mm)
(mm)
33.85
133.85
52
150
33.65
133.65
40.85
183.85
57
200
40.65
183.65
58.85
189.85
75
206
58.65
189.65
83.85
189.85
100
209
83.65
189.65
83.85
212.85
103
229
83.65
212.65
83.85
238.85
104
255
83.65
238.65
98.85
283.85
DO = Nominal external diameter
115
300
98.65
283.65
Taper mount method
Adjust the screws to reduce the range of radial displacement. When adjusting, identify the screw location
u
with the lowest radial displacement and tighten that screw, aiming for the average of the highest and lowest
indicator readings.
Repeat this process until the DTI readings are within ±5 µm at the screw locations.
u
NOTE: It may be necessary to loosen screws whilst tightening other screws.
DO
DT
(mm)
(mm)
333.85
350
333.65
395.85
413
395.65
383.85
417
383.65
454.85
489
454.65
513.85
550
513.65
Step 2
Clean shaft taper and internal taper of RESR as
u
recommended in the storage and handling section.
Insert the first screws:
u
For RESR rings with 6, 9 or 18 mounting holes,
use 3 equally spaced M3 screws.
For RESR rings with 12, 16 or 20 mounting holes,
use 4 equally spaced M3 screws.
NOTE: Do not lubricate screws.
Recommended screw type M3 × 0.5:
ISO 4762 /DIN 912 grade 10.9 minimum/ANSI B18.3.1M.
u
Insert the screws so that the RESR is loosely connected to
the shaft, then roughly align the ring by eye and touch.
Lightly tighten the screws. Use a Dial Test Indicator (DTI)
u
to check the radial displacement at the screw locations.
NOTE: Disregard the radial displacement between the
screw locations.
DTI
Use a DTI with low exertion force to avoid scratching the
scale surface. A DTI with a ruby ball stylus is recommended
as a further precaution against scratches.
NOTE: At this stage, the screws
should only be lightly tightened
(less than 0.5 Nm)
to allow further final adjustment.
7
Advertisement
Table of Contents
