• 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

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

General Specifications

UPC	662288408208
Weight	8.24 LB
Packaged Length	5.70 IN
Packaged Width	5.40 IN
Packaged Height	4.40 IN
HTC	8483.60.4040
Country of Origin	Mexico