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12-22
Chapter 12 HXYLX
4) Replenish the grease with one of the following methods.
Method 1: Using a grease gun, replenish grease from the grease nipple in-
stalled on the linear guide bearings.
Sufficient grease has been replenished when new grease starts to seep out
from the clearance between the linear guide bearings and rail.
The X-axis and Y-axis each have four linear guide bearings. Replenish grease
to all four bearings.
Wipe off any excessive grease that has seeped out to the rail.
Recommended grease gun: MG70 (THK X-axis, Y-axis H-type nozzle)
(THK Z-axis (ZL) N-type nozzle)
Method 2: After wiping off the grease adhered on the rail and on the bear-
ing seal section with a rag, etc., apply a light coat of grease di-
rectly onto the guide rail with a finger.
NOTE
Due to the structure of ZH, grease can be replenished only with this
method.
When replenishing grease to ZH, turn the power OFF when near the
center of the stroke, and then apply grease to the top and bottom of the
guide.
5) Return the stroke cover to the original position.
5-2 Replenishing grease to the ball screw
Prepare the following recommended grease nipple beforehand.
Recommended grease nipple : A-M6X1 type (JIS B1575)
Recommended grease : Alvania No. 2 (Showa Shell)
Daphne Eponex No. 2 (Idemitsu)
!
CAUTION
When designated by YAMAHA and the user, special grease, such as splatter-
proof grease, may be applied when the robot is delivered. In this case, apply
the appropriate grease as indicated in the delivery specification drawings, etc.