Menu
Find Your Nearest Timken Sales Office or Authorized Distributor

Our locator tool helps you connect with the right Timken partner quickly. Registered users
can save their nearest Timken Sales office or distributor in their dashboard.

Try the Locator Tool
Analyze Bearing Performance in an Application with Timken ® Syber ® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

Learn More
Explore Timken Engineering Tools
Videos on YouTube

Check out our Engineering Tools video playlist on YouTube. These short walkthroughs
help you navigate Timken calculation tools, selection guides and digital resources.

View the Full Playlist
Batch CAD Cart (0) ▾
  • Cart is empty
  1. Click Here for Batch Download
Request Information
FHD Type Flex Flex Hubs, Rough Stock Bore

Sier-Bath Heavy Duty Flanged Sleeve Gear Couplings

The FHD Type coupling consists of two flex hubs, two sleeves with bolt-on seal carriers and one accessory kit. This coupling is supplied with exposed bolts (E) only. The FHD type coupling has heat treated bolts for greater strength.

Designed for high torque, low-speed applications that occur in mill operations.
Unit of Measure

Specifications

Description 

 N/A FHD-12-HUB-RSB

Type

 N/A Gear Coupling Hubs

Hub Material

 N/A AISI 1045

Style

 N/A Unbored

Color

 N/A Metallic

Bore Type

 N/A Rough Stock Bore

Coupling Type

 N/A Gear

Weight

 N/A 1390.20 lb

Dimensional Data

Size

 N/A 12

Set Screw Style Coupling Size (Dimension T)

 N/A No Setscrew

Length thru Bore

 N/A 13.880 in

Max. Bore

 N/A 17.000 in435 mm

Dimension HD

 N/A 22.750 in577.85 mm

Overall Length

 N/A 28.25 in

Flange Diameter (Dimension FD)

 N/A 33.00 in

Distance between Shaft Ends (Dimension BSE)

 N/A 0.50 in

Performance Data

Nominal Torque

 N/A 4412000 in·lb500000 N·m

Max Speed (Unbalanced)

 N/A 1300 rpm
By clicking Submit, you consent to the personal information you provide being used in the manner as described in our Privacy Notice, including access to that information by Timken personnel who may be located outside your home country. In addition, you agree that the CAD drawings are for your personal, one-time use only, and that you will not modify or create any compilation or derivative work using the CAD drawings or distribute or display the CAD drawings on any website or other media.