• 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

Fastener Quantity	10
Model Name	1-5-7_FR
Coupling Size	2.5
Outside Diameter (in)	8.375 in
Length Through Bore (in)	2.90625 in
Coupling Type	Gear Coupling
Rating HP @ 100 RPM	90
Material	Medium Carbon Steel
Tooth Profile	Straight Faced Involute Hub tooth
Bolt Type	Shrouded
Bore Type	Rough Bore
Max Bore w/standard key for Flex Hub	2.75 in
Torque Rating (in-lb)	56,700 in/lbs
Compatible Bore Size [Min] (in)	0 in
Style	FASTS
Measurement System	Imperial
Compatible Bore Size Flex Hub [Min] (in)	0 in
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
Speed Max (rpm)	7,900 rpm
Overall Length (in)	6 in
Sleeve Type	Flanged
Fastener Size	1/2 x 1 5/16
Bore Size Max (in)	2.75 in

General Specifications

UPC	662384010213
Weight	51.10 LB