Maintenance 8. Replacing the Timing Belts (U2 Belt)
E2C Rev.6
161
(5) Place the U1 belt around the U1 and large
U2 pulleys.
Make sure that the gear teeth of the belt
mesh with the pulleys completely.
U
1
belt
U
1
pulley
Large U2 pulley
(6) Place the Joint #3 motor unit back on Arm
#2.
(7) Place the Z belt around the Z1 and Z2
pulleys.
Make sure that the gear teeth of the belt
mesh with the pulleys completely.
Z belt
Z
1
pulley
Z2 pulley
Joint #3 motor unit
(8) Loosely secure the Joint #3 motor unit,
Joint #4 counter shaft unit, and Joint #4
motor unit to Arm #2 in the following
order:
Joint #3 motor unit
↓
Joint #4 counter shaft unit
↓
Joint #4 motor unit
Make sure that the gear teeth of the belt
mesh with the pulleys completely.
4-M4
×
1
2+Washer,
Spring washer
Joint #4
motor unit
2-M4
×
1
2+Washer, Spring washer
M5
×
8 double-sems screw
Joint #4 counter shaft unit
Joint #3
motor unit
4-M4
×
1
2+Washer,
Spring washer
Loosely secure the units to Arm #2 so that the motor units can be moved by hand,
and they will not tilt when pulled. If the units are secured too loose or too tight, the
belts will not have the proper tension.
(9) Apply the proper tension to the U2 belt,
and then secure the Joint #4 counter shaft
unit.
To do so, pass a suitable cord or string
around the Joint #4 counter shaft unit near
its mounting plate. Then, pull the cord
using a force gauge or similar tool to apply
the specified tension shown in the figure on
the right.
Tension of U2 belt: 98.0 N (
1
0 kgf)
Adjustable range:
88.2–
1
07.8 N (9–
11
kgf)
2-M4×
1
2+Washer, Spring washer
M5×8 double-sems screw
)
NOTE
Summary of Contents for E2C Series
Page 1: ...SCARA ROBOT E2C series MANIPULATOR MANUAL Rev 6 EM069R1409F ...
Page 2: ...MANIPULATOR MANUAL E2C series Rev 6 ...
Page 8: ...vi E2C Rev 6 ...
Page 14: ......
Page 82: ......
Page 92: ...Maintenance 2 General Maintenance 80 E2C Rev 6 ...
Page 118: ...Maintenance 4 Replacing the Cable Unit 106 E2C Rev 6 ...
Page 194: ...Maintenance 11 Replacing the Signal Relay Board 182 E2C Rev 6 ...