• 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

Bolt Type	Exposed
Material	Medium Carbon Steel
Outside Diameter (in)	8.375 in
Rating HP @ 100 RPM	90
Length Through Bore (in)	2.90625 in
Fastener Quantity	6
Max Bore w/standard key for Flex Hub	2.75 in
Bore Type	Finished Bore
Coupling Size	2.5
Tooth Profile	Straight Faced Involute Hub tooth
Coupling Type	Gear Coupling
Compatible Bore Size Rigid Hub [Min] (in)	1.375 in
Torque [Max] (in-lb)	113,400 in/lbs
Lube/Non-Lube	Lubricated
Configuration	Flex Rigid
Compatible Bore Size Flex Hub [Min] (in)	0 in
Style	FASTS
Compatible Bore Size [Min] (in)	0 in
Torque Rating (in-lb)	56,700 in/lbs
Speed Max (rpm)	7,900 rpm
Measurement System	Imperial
Hub Diameter (in)	4.718 in
Overall Length (in)	6.1875 in
Bolt Circle	7.125 in
Sleeve Type	Flanged
Includes	Hubs (1) Sleeve (1) Rigid (1) Seal (2)
Temperature Range	-40 to +190 °F
Performance	Lubrication Hole
Features	Exposed Bolt / Flex Rigid / Finish Bored Coupling
Maximum Operating Angular Misalignment	0.5 °
Bore Size Max (in)	2.75 in
Fastener Size	5/8 x 2 3/4

General Specifications

UPC	662384011876
Weight	48.00 LB