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
    The SX Type is the standard coupling type that includes two hubs, a stock length spacer designed to meet industry standard lengths, and two unitized disc packs. The coupling has two flex planes, one at each disc pack, allowing this coupling to accommodate parallel, angular, and axial misalignment with specified limits. The coupling is available in 4, 6, and 8 bolt designs and bore sizes up to 13 inches (330mm) on the largest size. Custom spacer lengths can be manufactured to meet special shaft separations required for specific applications. The SX coupling can be fitted with overload bushings to protect the disc packs in over torque conditions and can act as an anti-flail device. SX couplings are assembled at the time of installation on the equipment where the coupling will be in service.
Unit of Measure

Notes

Disclaimer

 N/A Lovejoy: CAD Models are accurate envelope dimensions only. Features such as bore size and keyway are not rendered or are only representative. Contact Lovejoy Technical Support or refer to product catalogs for details.

Specifications

Description 

 N/A SX278-6-CP-4.5005X4.5035-BSE=8.25

Hub Style

 N/A Standard

Type

 N/A Disc Coupling

Material

 N/A Steel

Style

 N/A Bored

Weight

 N/A 128.972 lb

Color

 N/A Metallic

Coupling Series

 N/A SX-6

Coupling Type

 N/A Disc

Dimensional Data

Size

 N/A 278-6

Hub 1 Keyway (W x D)

 N/A 4.5005 x 4.5035 in

Hub 2 Keyway (W x D)

 N/A 4.5005 x 4.5035 in

Length thru Bore

 N/A 4.92 in125 mm

Dimension FD

 N/A 10.95 in278.00 mm

Overall Length

 N/A 18.47 in469 mm

Max. Bore (Dimensions ID1/ID2)

 N/A 4.880 in124 mm

Dimension HD

 N/A 6.85 in174 mm

Dimension PW

 N/A 0.835 in21.2 mm

Dimension S

 N/A 6.960 in177.00 mm

Distance between Shaft Ends (Dimension BSE)

 N/A 235.00 in

Performance Data

Temperature 

 N/A -40 to 450 ºF

Nominal Torque

 N/A 125700 in·lb14200 N·m

Max. Torque

 N/A 251400 in·lb28400 N·m

Max. Speed (Unbalanced)

 N/A 2800 rpm

Max. Speed (Balanced)

 N/A 7000 rpm

Axial Misalignment (+-D Ka) for couplings with TWO disc packs

 N/A 0.205 in5.2 mm

Max. Angular Misalignment (per single disc pack)

 N/A 1.00 º

Features

Features 

 N/A
  • Unitized disc pack
  • Infinite life when properly sized and aligned
  • Accommodates angular, axial, and parallel misalignment
  • Torsionally rigid without any back lash
  • No need for lubrication or maintenance
  • No wearing parts and high resistance to harsh environmental conditions
  • Overload Bushings are available
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.