Timken 552A Tapered Roller Bearing Cup Outer Race

Description:

The Timken 552A Tapered Roller Bearing is a precision single-row tapered roller bearing cup (outer race) designed to mate with compatible Timken tapered roller bearing cones to support heavy combined radial and axial loads. Its separable design simplifies installation and maintenance while providing high load capacity, accurate shaft alignment, and long service life. It is widely used in industrial gearboxes, rolling mills, mining equipment, construction machinery, heavy-duty axles, and power transmission systems.

Applications:

The Timken 552A Tapered Roller Bearing Cup is engineered for demanding applications requiring high radial and thrust load capacity with reliable rotational performance. It is commonly paired with Timken 558A, 557A, 557, and 555-S bearing cones and is suitable for industrial gearboxes, mining and aggregate equipment, rolling mills, construction machinery, heavy-duty conveyors, and power transmission equipment.

Technical Specifications:

• Manufacturer Part Number (MPN): 552A
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Cup (Outer Race)
• Bearing Type: Single Cup (TS)
• Cup Part Number: 552A
• Series: 550 Series
• Design Units: Inch (Imperial)
• Outside Diameter (OD): 4.8750 in (123.825 mm)
• Cup Width (C): 1.1875 in (30.163 mm)
• Weight: 4.0 lb (1.8 kg)
• Maximum Housing Fillet Radius: 0.130 in (3.30 mm)
• Housing Backing Shoulder Diameter – Frontface (Da): 4.60 in (116.10 mm)
• Housing Backing Shoulder Diameter – Backface (Db): 4.29 in (108.97 mm)
• e Factor: 0.35
• Y Factor: 1.73
• Geometry Factor (Cg): 0.111
• Compatible Bearing Cones: Timken 555-S, 557, 557A, 558A
• Typical Applications: Industrial Gearboxes, Rolling Mills, Mining Equipment, Construction Machinery, Heavy-Duty Power Transmission Systems.

Common Replacements:

• SKF Equivalent Tapered Roller Bearing Cup
• NTN Equivalent Tapered Roller Bearing Cup
• Timken 558A Bearing Cone