• Morse Mechanical Clutches offer the most complete and versatile selection of backstop, overriding, and index Clutches in the industry
• PB series clutch features precision formed cams providing high torque capacities with excellent wear life. These models are suitable for general duty applications.
• A bonze seal maintains race concentricity. They a asymmetrical by design, so must be ordered according to rotation requirements.

Technical Specifications

Length to Snap Ring Groove (in)	2.0625 in
Keyway	3/8 x 3/16
Groove Diameter	2.391/2.379
Lubrication Type	Grease
Type	CAM Clutches
Hub Diameter (in)	2.375 in
RPM Max. - Outer Race	300
Key for Bore Size	3/8 x 3/16
Model	PB-12A
Overall Width (in)	3.875 in
Overall Diameter (in)	4.4375 in
Length to Groove	1.311/1.321
Configuration	RH
Snap Ring (Not Furnished)	RST250
Mounting Diameter (in)	2.500/2.499 in
Keyway Length (in)	1.125 in
Major Diameter Width (in)	1.875 in
Mounting Length (in)	1.4375 in
RPM Max. - Inner Race	1200
Groove Width	.120/.130
Add'l Bearing Support Requirement	No
Bore Size (in)	1.5 in
Indexing Clutch	Yes
Rated Torque Capacity (ft.-lbs.)	1,350
Product Type	PB Series
Backstopping Clutch	Yes
Overrunning Clutch	Yes

General Specifications

UPC	662288408192
Weight	8.27 LB
Packaged Length	5.90 IN
Packaged Width	5.30 IN
Packaged Height	4.10 IN
HTC	8483.60.4040
Country of Origin	Mexico