87 / 151Issued: 16.06.2010 Version: MA KL 1500-3 T S 141215 V1 en
11. Repair
11.4.2 Installing the upper/lower rollers
Preconditions
Procedure 1. Insert the roller to be installed (upper or lower) from the inside through the
hole in the carriage.
2. Fit the lock washer and tighten the hexagon nut by hand.
3. Tighten the hexagon nut with a torque wrench (tightening torque M
A
= 380
Nm). Apply counterforce using an open-end wrench on the square of the
roller.
4. Install the carriage in accordance with (>>> 11.6 "Exchanging the car-
riage" page 89).
11.5 Exchanging the side rollers
Description The carriage is guided by six centric and six eccentric rollers on two tracks.
The centric rollers are indicated by a “Z” and eccentric ones are indicated by
an “E”. The centric side rollers are always located on the fixed bearing side.
The fixed bearing side is the side on which the drive engages with the rack.
Warning!
Unintentional motion of the robot and the linear unit can result in danger to
persons and materials. If the robot and the linear unit have reached their dis-
assembly position, shut down the system and take measures to prevent it
from being switched on again unintentionally. If several robots or linear units
are in a system, these must also be switched off and secured against being
switched on again unintentionally.
The type of wheel bearing is indicated on the end face of the square of each
roller.
Fig. 11-13: Arrangement and number of the rollers
1 Lateral eccentric roller (E),
floating bearing side
6 Lower eccentric roller (E),
fixed bearing side
2 Upper centric roller (Z), float-
ing bearing side
7 Track, fixed bearing side
3 Carriage 8 Track, floating bearing side
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