Brochure

Mtd. Ball
Bearings
G-256
®
Mounted Ball Bearing Engineering Section
Step 5: Tighten Locking Mechanism
a. Setscrew Locking Inserts
Setscrews in multiple bearing applications should be aligned
as shown.
Tighten bearing units to the shaft as follows:
i. Torque the rst setscrew “A” to one half of the
recommended torque in Table 2.
ii. Torque the second setscrew “B” to the full
recommended torque. Go back to the rst setscrew
“A” and tighten to the full recommended torque.
b. Eccentric Locking Inserts
i. Place collar on inner race and rotate by hand in
direction of shaft rotation until eccentrics are engaged.
ii. Insert drift pin into the hole in the collar O.D. (B) and
lock in direction of shaft rotation with the aid of small
hammer.
iii. Torque single setscrew (A) to recommended
torque in Table 3.
c. BOA Locking Inserts
i. Be sure that the BOA collar is tted square and snug
against the shoulder on the inner ring as shown.
ii. Torque the BOA collar cap screw to the full
recommended torque in Table 4.
Check shaft again for freedom of rotation and then tighten
the second bearing unit in the same fashion. When all bear-
ings are tightened, perform a nal check to the shaft for
freedom of rotation.
BMD Table 3
Eccentric Locking Recommended Torque
Screw Size Hex Size Inch-Pounds
1/4-28 1/8 65 - 85
5/16-24 5/32 125 - 165
3/8-24 3/16 230 - 300
7/16-20 7/32 350 - 450
1/2-20 1/4 500 - 650
5/8-18 5/16 1100 - 1440
Browning Mounted Ball Bearing Housed Units continued
Push Locking Collar Tightly
Against Inner Ring Shoulder
BMD Table 4
BOA Concentric Locking Collar Cap Screw Torque
Screw Size Torx Size Inch-Pounds
# 8-32 T-25 70
# 10-24 T-27 100
1/4-20 T-30 240
5/16-18 T-45 495
BMD Table 2
Setscrew Recommended Torque
Screw Size Hex Size Inch-Pounds
1/4-28 1/8 65 - 85
5/16-24 5/32 125 - 165
3/8-24 3/16 230 - 300
7/16-20 7/32 350 - 450
1/2-20 1/4 500 - 650
5/8-18 5/16 1100 - 1440
A
B