IAI America ISPDACR-ESD - Manual (Page 53)

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8. Options
8.4 Guide with Ball Retention Mechanism
(Structure)
A spacer (retainer) is inserted between adjacent balls (steel balls) in the guide to reduce noise and achieve
smooth operation. This specification is indicated by “RT” in the model number.
(Features)
[1] Reduced noise
There is no longer metal noise generated by colliding balls and thus noise is reduced. Since balls
are aligned by retainers, annoying noise decreases.
[2] Smooth operation
Wear caused by friction between balls decreases, oil no longer runs out due to contact, and
lubricating oil collects at the retainers. Accordingly, operation becomes smooth.
8.5 Suction Joint on Opposite Side
This option is available for the cleanroom types ISDCR/ISPDCR/ISDACR/ISPDACR.
On actuators of cleanroom types, the suction joint is normally located on the left side of the actuator as
viewed from the motor end. Specify this option if you want to have this joint on the other (opposite) side.
Ball
Ball Spacer (retainer)