Timken 99100 Tapered Roller Bearing Cup Outer Race

Description:

The Timken 99100 is a precision single tapered roller bearing cup (outer race) designed for TS (Tapered Single) bearing assemblies that support high combined radial and axial loads. Manufactured from premium through-hardened bearing steel, the cup provides accurate roller guidance, excellent load distribution, and long service life in demanding industrial applications. It is commonly paired with compatible Timken bearing cones, such as the Timken 99500, to form a complete bearing assembly. Maintenance teams, OEMs, and system integrators rely on the Timken 99100 for equipment repairs, bearing replacements, retrofit projects, and preventive maintenance in heavy industrial machinery, mining equipment, rolling mills, gear drives, and power transmission systems.

Applications:

The Timken 99100 tapered roller bearing cup is designed for use with compatible tapered roller bearing cones to create a complete TS bearing assembly capable of supporting heavy radial and thrust loads. It is widely used in industrial gearboxes, mining machinery, rolling mills, paper processing equipment, marine propulsion systems, conveyors, and other heavy-duty rotating equipment where durability, precise shaft positioning, and long bearing life are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 99100
• Manufacturer: Timken
• Product Type: Roller Bearing Cup
• Bearing Type: Single Row Tapered Roller Bearing Cup (TS)
• Series: 99000 Series
• Design Units: Inch (Imperial)
• Material: Through-Hardened Bearing Steel
• Cup Outside Diameter (D): 10.0000 in (254.000 mm)
• Cup Width (C): 1.8750 in (47.625 mm)
• Dynamic Radial Load Rating (C1): 148,000 lbf (660,000 N) (when used in a matched bearing assembly)
• Dynamic Radial Load Rating (C90): 38,500 lbf (171,000 N) (when used in a matched bearing assembly)
• ISO Factor (e): 0.41
• ISO Factor (Y): 1.47
• Geometry Factor (Cg): 0.146
• Maximum Housing Fillet Radius: 0.130 in (3.30 mm)
• Housing Backing Shoulder Diameter – Frontface (Da): 9.38 in (238.30 mm)
• Housing Backing Shoulder Diameter – Backface (Db): 8.94 in (227.08 mm)
• Weight: 27.5 lb (12.5 kg)
• Compatible Cone: Timken 99500 (and other compatible 99000 Series cones)
• Typical Applications: Rolling mills, mining equipment, industrial gearboxes, paper mills, marine drives, conveyors, and heavy-duty power transmission systems.

Common Replacements:

• SKF 99100 Cup
• NTN 99100 Cup
• KOYO 99100 Cup