9
TONiC RESM20 angle encoder system installation guide
Taper mount method
Mounting shaft specifications
Recommended taper roundness:
Recommended taper roundness
when using two heads and DSi:
Recommended taper diameter (DT):
Diameter (mm)
Roundness
value (mm TIR)
≤ 115
0.025
150 to 225
0.050
≥ 300
0.075
Diameter (mm)
Roundness
value (mm TIR)
≤ 115
0.0125
150 to 225
0.025
≥ 300
0.0375
Recommended surface finish ≤ Ra 1.2.
NOTE:
It is recommended that the mounting surface is a turned, rather than ground finish.
DO (mm)
DT (mm)
52
33.85
33.65
57
40.85
40.65
75
58.85
58.65
100
83.85
83.65
103
83.85
83.65
104
83.85
83.65
115
98.85
98.65
DO (mm)
DT (mm)
150
133.85
133.65
200
183.85
183.65
206
189.85
189.65
209
189.85
189.65
229
212.85
212.65
255
238.85
238.65
300
283.85
283.65
DO (mm)
DT (mm)
350
333.85
333.65
413
395.85
395.65
417
383.85
383.65
489
454.85
454.65
550
513.85
513.65
DO
= Nominal external diameter.
15° ±0.2°
*
Allow 2 mm for 417 mm, 489 mm and 550 mm rings only.
DT
Step 1
7 min
1
*
u
Remove the protective film from the surface of the the
RESM20 ring.
u
Clean shaft taper and internal taper of RESM20
as
‘Storage and handling’, page 2
u
Insert the first screws:
•
For RESM20
rings with 6, 9 or 18 mounting holes,
use 3 equally spaced M3 screws.
•
For RESM20 rings with 12, 16 or 20 mounting holes,
use 4 equally spaced M3 screws.
NOTE:
Do not lubricate screws.
u
Insert the screws so that the RESM20 is loosely connected
to the shaft, then roughly align the ring by eye and touch.
u
Lightly tighten the screws. Use a Dial Test Indicator (DTI) to
check the radial displacement at the screw locations.
NOTE:
Disregard the radial displacement between the
screw locations.
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.
Step 2
DTI