• Body - Alloy steel - heat treated - protective coated for corrosion resistance.
• Ball - Alloy steel - heat treated - hard chrome plated.
• Race - (See 2D Sales Drawing for details.)
• PTFE liner. (See 2D Sales Drawing for details.)

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 - Alloy steel - heat treated - protective coated for corrosion resistance.
• Ball - Alloy steel - heat treated - hard chrome plated.
• Race - Low carbon steel (or Alloy steel - heat treated)- protective coated for corrosion resistance - PTFE lined. (See 2D Sales Drawing for details.)

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 - Alloy steel - heat treated - protective coated for corrosion resistance.
• Ball - Alloy steel - heat treated - hard chrome plated.
• 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

• Body - Low carbon steel - protective coated for corrosion resistance.
• Ball - Alloy steel - heat treated - hard chrome plated.