Insert Bearing Units (Eccentric locking collar type)
4
4. Mounting method
1) Slide the insert bearing unit onto the shaft slowly and bring it to the predetermined position. (Photo 4.1)
2) Mount the insert bearing unit on the machine base and secure it firmly with bolts. (Photo 4.2) (Refer to Table 4.1.)
3) Press-fit the eccentric part of the eccentric locking collar into the eccentric part provided on the bearing inner ring.
(Photo 4.3)
4) Tighten the eccentric locking collar in the shaft rotation direction.
5) Tighten the set screws with a hexagonal wrench key and secure them to the shaft. (Refer to Table 4.2.)
Remarks: 1. Before sliding the eccentric locking collar onto the shaft, check that the tips of set screws do not protrude
from the inside diameter of bearing. If a tip protrudes, loosen the set screw.
2. When sliding the insert bearing unit onto the shaft, be careful that the unit does not get twisted. In addition,
do not tap the inner ring side or the rubber seal directly.
3. The values shown in Table 4.1 are considered appropriate for the tightening torque for bolts for the bearing
housing.
4. The machine base to which the unit is mounted must be rigid enough and flat to prevent the bearing housing
from be deformed. (Flatness: 0.1mm or lower)
5. In case of systems rotating in both normal and reverse directions, the following method should be taken.
a) After tightening the eccentric locking collar by hand, tighten it further with a larger torque. (Insert jigs
such as a chisel, etc. into the eccentric locking collar drill hole and tighten further with a plastic hammer.)
(Photo 4.4)
b) Use a stepped shaft and apply the inner ring to the shoulder.
c) When using the insert bearing unit with 2 eccentric locking collars in pairs, mount it properly so that both
eccentric locking collars are positioned on the outside or inside. (At this time, the insert bearing unit
cannot bear large axial loads.)
d) Secure the inner ring using the collar for securing in the axial direction.
6. The values shown in Table 4.2 are considered appropriate for tightening torque of eccentric locking collars.
