Timken 100CCAB Alternator Bearing - Commutator End

Timken Alternator Bearing for GM Applications

The Timken 100CCAB alternator bearing is a deep groove ball bearing built for charging-system service where smooth rotation, low noise, and stable performance matter. It is sized for direct replacement use in select Chevrolet, GMC, and Cadillac applications, including Silverado 2500 and Sierra 2500 models with a commutator end bearing location.

Key Features

• Inside diameter: 0.394 in. / 10.00 mm
• Outside diameter: 2.378 in. / 60.38 mm
• Width: 1.004 in. / 25.50 mm
• Deep groove design for consistent alternator bearing operation
• Built to Timken dimensional standards for interchangeability
• Available in shielded and sealed configurations within the Timken deep groove bearing family

Detailed Description

Timken 100CCAB is a deep groove alternator bearing engineered for charging systems that require accurate dimensions and dependable rotational performance. The bearing’s 10.00 mm inner diameter, 60.38 mm outer diameter, and 25.50 mm width make it a precise service part for alternator rebuilds and repairs. Timken’s tight tolerances and refined surface finish support smooth operation under proper lubrication, while the brand’s global quality standards help maintain consistent fit and function. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With 1999-2002 Chevrolet Silverado 2500, Commutator End; 2001-2002 Chevrolet Silverado 2500 HD, Commutator End; 2000-2002 Chevrolet Suburban 2500, Commutator End; 1999-2002 GMC Sierra 2500, Commutator End; 2001-2002 GMC Sierra 2500 HD, Commutator End; 2000-2002 GMC Yukon XL 2500, Commutator End; 1999-2000 Cadillac Escalade, Commutator End. The Timken 100CCAB is also a direct-fit service option for alternator bearing replacement on these GM platforms.

What It Helps Address

• Alternator bearing noise during engine operation
• Rough or uneven alternator shaft rotation
• Vibration from worn charging-system bearings
• Charging-system service on high-mileage GM trucks and SUVs
• Dimensional mismatch during alternator rebuild work

Installation Notes and Tips

Verify the bearing dimensions and alternator end location before installation. Clean the housing and shaft surfaces thoroughly, and inspect the alternator components for wear, scoring, or heat damage before pressing in the new bearing. Proper lubrication and correct press-fit technique are important for bearing life and quiet operation. Confirm the application against the vehicle’s alternator configuration for Chevrolet Silverado 2500, GMC Sierra 2500, and Cadillac Escalade service.

Quality Assurance

Timken deep groove ball bearings are manufactured to ISO standards and are dimensionally interchangeable with competitor products. The 100CCAB follows Timken’s worldwide quality requirements for bearing consistency and fit.