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F Type Rigid Hubs, Inch (Imperial) Bore & Keyway - Exposed and Shrouded Bolt Designs

For use with FFR (Flex-Rigid) or FRR (Rigid-Rigid) couplings.

The FFR Type coupling consists of one flex hub, one rigid hub, one sleeve, and one accessory kit. Exposed bolts (E) are the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5.5. The FFR Type has a max angular misalignment of 1.5 degrees (1.5 degrees per gear mesh).

The FRR Type coupling consists of two rigid hubs and one accessory kit. Exposed bolts (E) are also the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5.5. The FRR Type coupling does not accommodate for any angular misalignment.

For larger torques, consider the FHD Type gear coupling in sizes 10 through 30.
Unit of Measure

Specifications

Description 

 N/A F-2.5E-HUB RGD-1-3/4-3/8X3/16KW

Hub Style

 N/A Exposed Bolt

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A AISI 1045

Style

 N/A Bored

Color

 N/A Metallic

Bore Type

 N/A Rigid w/ Keyway

Coupling Type

 N/A Gear

Weight

 N/A 26.53 lb

Dimensional Data

Bore Size 

 N/A 1 3/4 in

Size

 N/A 2 1/2

Set Screw Style Coupling Size (Dimension T)

 N/A No Setscrew

Keyway Size (W x D)

 N/A 3/8 x 3/16 in

Depth

 N/A 2.910 in73.91 mm

Length thru Bore

 N/A 2.910 in

Max. Bore (Dimensions ID1/ID2)

 N/A 4.250 in107.95 mm

Dimension FD

 N/A 8.38 in212.85 mm

Dimension HD

 N/A 5.840 in148.34 mm

Cubic inches

 N/A 204.35300 in³

Performance Data

Nominal Torque

 N/A 56700 in·lb6410 N·m

Max Speed (Unbalanced)

 N/A 5500 rpm
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