1. Mounting of set screw unit：

a. Check accuracy of shaft

Before mounting the bearing unit, check the shaft accuracy for no bends, burrs, and other flaws.

b. Inspect the rigidity and flatness of mounting surface

The mounting surface of machine must be sufficiently rigid, and the mounting surface must be as flat and smooth as possible. Flatness: Max0.15mm (0.05mm is more useful).

c. Install bearing unit

Avoid striking the bearing with a hammer to press-fit the bearing to the shaft, if you give a strong impact to the side surface of the inner ring, the slinger moves, and it may cause a problem. When there is a tight fit between bearing bore and shaft, we suggest you use press equipment to install.

d. Pre-tighten housing

Excessive tightening of the mounting bolts may cause the housing to deform. Tighten the bolts to the proper torque, FK recommends using  a washer with the bolt when mounting the housing as the bolt alone may cause damage to the housing.

e. Tighten setscrews

Insert a hexagonal bar wrench into the hexagonal hole of the setscrew, and tighten the setscrews with the recommended torque.

f. Tighten housing

Excessive tightening of the mounting bolts  may cause the housing to deform. Tighten the bolts to the proper torque.

2. Mounting of eccentric locking collar unit：

NOTE：Eccentric locking collar unit is not recommended for applications where the direction of rotation is sometimes reversed, since the eccentric collar can loosen.

a. Install bearing unit

Avoid striking the bearing with a hammer to press-fit  the  bearing to the shaf, if  you give a strong impact to the side surface of the inner ring, the slinger moves, and it may cause a problem. When there is a tight fit between bearing bore and shaft, we suggest you use press equipment to install.

b. Pre-tighten housing

Excessive tightening of the mounting bolts may cause the housing to deform. Tighten the bolts to the proper torque , FK recommends using  a washer with the bolt when mounting the housing as the bolt alone may cause damage to the housing.

c. Fit the eccentric collar

Fit the eccentric section of the inner ring of the bearing to the eccentric recessed section of the eccentric locking collar, and rotate the collar in the direction of shaft rotation by hands to tighten it temporarily.

d. Rotate eccentric collar

Fit a rod in the hole on the circumference of the eccentric collar and tap it with a hammer so the collar rotates in the shaft rotating direction.

e. Tighten eccentric collar

Tighten the setscrew on the eccentric collar to the proper torque, please refer to FK catalog of the proper torque.

f. Tighten housing

Excessive tightening of the mounting bolts  may cause the housing to deform. Tighten the bolts to the proper torque.

3. Mounting of adapter sleeve unit：

NOTE: The adapter sleeve unit can be reliably secured to the shaft even when it is subjected to the impact loads and vibrations. But, this unit can not be used on a shaft that is subjected to grease axial load.

a. Fit the sleeve onto the shaft

Fit the sleeve onto the shaft and position it so that its tapered section is centered to the bearing. For easy fitting, expand its slow with screwdriver or similar tools.

b. Install bearing units

Fit the bearing unit over the sleeve.

c. Pre-tighten housing

Excessive tightening of the mounting bolts may cause the housing to deform. Tighten the bolts to the proper torque, FK recommends using a washer with the bolt when mounting the housing as the bolt alone may cause damage to the housing.

d. Tighten adapter sleeve

Gently tap side of sleeve along the whole circumference of the sleeve so that the bearing inner ring is closely seated on the sleeve.

e. Fit washer and nut

Place the lockwasher, and fully handtighten the nut.

f. Lock the nut

Fit a jig or a screwdriver in one of slots on the nut, and tap it with a hammer until the nut turns 60  to 90 degree. NEVER tap the slinger  and NEVER overtighten the nut.

g. Secure the nut

Bend tabs of lockwasher so that it fits into slots on the nut.

Never back rotate nut to fit washer tabs, forward rotate nut to fit the washer tabs.

h. Tighten housing

Excessive tightening of the mounting bolts  may cause the housing to deform. Tighten the bolts to the proper torque.

4. Mounting of  unit with covers:

a. Fill grease

In order to enhance dust and waterproofing effects, apply grese all around the seal lip of the cover, and fill the 2/3 internal space of the cover with grease.

b. Install bearing unit

Pass one cover along the shaft, then slide the bearing unit onto the shaft.  The steps to install bearing unit onto the shaft is same as the mounting steps setscrew unit. It is recommended that the end of the shaft be chamfered beforehand to avoid damaging the lips of the rubber seal.

c. Fit cover 1

Take the cover which has been passed along the shaft and press it into the housing. Be careful not to strike surface of the cover directly with a steel hammer but use a synthetic resin or wood block. From 45 degree direction, tap it around the circumference of the cover to exert a uniform impact on the cover to fit it into the groove on the housing.

d. Fit cover 2

Be careful not to strike surface of the cover directly with a steel hammer but use a synthetic resin or wood block. From 45 degree direction, tap it around the circumference of the cover to exert a uniform impact on the cover to fit it into the groove on the housing.