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 Add to CAD Cart

Effective August 21st, 2023, the Naval Air Warfare Center Aircraft Division (NAWCAD) has disapproved Timken Aurora’s qualification status for SAE-AS81820 and SAE-AS81935 specifications. Timken Aurora is working diligently to get requalified.

  • Body - PH 13-8 Mo stainless steel per AMS 5629 - heat treated.
  • Ball - 440C stainless steel per AMS 5630 - heat treated.
  • Optional Ball - 13-8 Mo stainless steel per AMS 5629 - heat treated. (Specify by adding suffix "C" ex.: ATM-3ETC)
  • Race - 17-4 PH stainless steel per AMS 5643 - heat treated.
  • PTFE Liner - (AT 3200) Permanently bonded to race inside diameter, qualified to SAE-AS81820 Type A.
  • Temperature range: -65°F to +325°F
  • No load rotational breakaway torque can be varied to meet specific application requirements.
  • Keyways are available. Units are supplied without keyways. When a keyway is required, specify by adding suffix "K". Ex.: ATMK-3T.
  • As applicable, keyways will conform to SAE-AS81935/3 or NAS 559.
  • All threads are rolled after heat treatment, and conform to UNJF-3A per AS8879.
  • Rod End Bearings listed are manufactured to conform to the dimensions, materials, and configurations of SAE-AS81935/8, and are approved for procurement under this specification.
Unit of Measure

Specifications

Part Number

 N/A ATMK-10ETC

SAE Part Number

N/A M81935/8-10CK

Thread Type

 N/A Right Hand

Thread Configuration

 N/A Male

B - Ball Bore

 N/A .6250 in

W - Ball Width

 N/A .625 in

H - Head Width

 N/A .510 in

A - Base to Center

 N/A 2.832 in

D - Head Diameter

 N/A 1.763 in

O - Ball Shoulder Diameter

 N/A .739 in

S - Max. Housing I.D.

 N/A 1.1875 in

Ball Diameter

 N/A .968 in

G - Base to Center of Keyway Radius

 N/A 1.683 in

K - Keyway Width

 N/A .125 in

P - Keyway Depth

 N/A .541 in

C - Thread Length

 N/A 1.562 in

Thread Size

 N/A 5/8-18

Thread Class

 N/A UNJF-3A

a - Misalignment Angle

 N/A 8 º

Approximate Brg. Weight

N/A .505 lb

Ultimate Radial Static Load Capacity

 N/A 38,500 lb

Fatique Load

 N/A 10,800 lb

Axial Proof Load

 N/A 2,430 lb

No Load Rotational Breakaway Torque

 N/A 1 to 15 in·lb

Keyway

 N/A Keyway

Note

 N/A For dimensional tolerances of listed features, see the PDF version of the catalog under the "View Product Catalogs" tab from the home page.
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.