• All-metal end ring seal design for maximum service life. The industry standard for over 75 years.
• Provides 300% greater lubricant capacity than o-ring style couplings.
• Greater lubricant capacity allows longer periods between scheduled lubrications and longer service life.
• Straight tooth design provides improved load distribution, lower stresses and longer life for the gear teeth.

Technical Specifications

Material	Medium Carbon Steel
Tooth Profile	Straight Faced Involute Hub tooth
Coupling Type	Gear Coupling
Rating HP @ 100 RPM	375
Max Bore w/standard key for Flex Hub	4.25 in
Bolt Type	Shrouded
Bore Type	Finished Bore
Fastener Quantity	14
Length Through Bore (in)	4.4375 in
Coupling Size	4
Outside Diameter (in)	12.5 in
Compatible Bore Size Flex Hub [Min] (in)	2.625 in
Configuration	Flex Rigid
Compatible Bore Size Rigid Hub [Min] (in)	2.5 in
Torque [Max] (in-lb)	472,000 in/lbs
Measurement System	Imperial
Speed Max (rpm)	5,260 rpm
Style	FASTS
Torque Rating (in-lb)	236,000 in/lbs
Compatible Bore Size [Min] (in)	0 in
Lube/Non-Lube	Lubricated
Fastener Size	5/8 x 1 5/8
Bore Size Max (in)	4.25 in

General Specifications

UPC	662384011821
Weight	173.91 LB