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Action Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@actionbearing.com
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Cam Followers are anti-friction needle bearings developed for use in cam or track roller applications. They consist of a heavy outer ring cross section with a full complement of needle rollers. They offer high dynamic and static load carrying capability in a compact design. Cam Followers are offered in many design alternatives.

Heavy Stud types are preferred for high-loads and/or heavy shock applications. Available in stainless steel and with seals.
HR-B---HR-XB
HR-B---HR-XB-dwg
Unit of Measure
Items HR-B---HR-XB
HR-1/2-B
HR-B, HR-XB Heavy Stud Hex Slot
HR-B---HR-XB
HR-5/8-B
HR-B, HR-XB Heavy Stud Hex Slot
HR-B---HR-XB
HR-3/4-B
HR-B, HR-XB Heavy Stud Hex Slot
HR-B---HR-XB
HR-7/8-B
HR-B, HR-XB Heavy Stud Hex Slot
HR-B---HR-XB
HR-1-B
HR-B, HR-XB Heavy Stud Hex Slot
Drive Type N/A Hex-Drive Socket
Type N/A Unsealed
(D) Roller OD N/A 0.500 in N/A 0.625 in N/A 0.750 in N/A 0.875 in N/A 1.000 in
(B) Roller Width N/A 0.375 in N/A 0.437 in N/A 0.500 in N/A 0.500 in N/A 0.625 in
(A) Stud Dia. N/A 0.250 in N/A 0.3125 in N/A 0.4375 in N/A 0.4375 in N/A 0.625 in
(M) Stud Length N/A 5/8 in N/A 3/4 in N/A 7/8 in N/A 7/8 in N/A 1 in
(S) Eff. Thread Min. N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 3/8 in N/A 1/2 in
(T) Thread UNF Class 2A N/A 1/4-28 N/A 5/16-24 N/A 7/16-20 N/A 7/16-20 N/A 5/8-18
Hex Size N/A 1/8 in N/A 1/8 in N/A 3/16 in N/A 3/16 in N/A 1/4 in
(N) Oil Hole Location N/A N/A N/A 1/4 N/A 1/4 N/A 1/4
(H) Oil Hole Dia. N/A N/A N/A 3/32 in N/A 3/32 in N/A 3/32 in
(P) Lube Fitting Size N/A N/A N/A 3/16 N/A 3/16 N/A 3/16
Min Boss. Dia. N/A 19/64 N/A 23/64 N/A 1/2 N/A 1/2 N/A 3/4
Recomm. Bore N/A 0.2500 in N/A 0.3125 in N/A 0.4375 in N/A 0.4375 in N/A 0.6250 in
Recomm. Torque N/A 50 lb·in N/A 75 lb·in N/A 300 lb·in N/A 300 lb·in N/A 500 lb·in
Basic Dynamic Rating N/A 970 lb N/A 1210 lb N/A 2140 lb N/A 2140 lb N/A 2850 lb
Max. Static Capacity N/A 1590 lb N/A 2500 lb N/A 4150 lb N/A 4150 lb N/A 6200 lb