Timken 558A Single Row Tapered Roller Bearing Cone

Description:

The Timken 558A Tapered Roller Bearing Cone is a precision single-row tapered roller bearing cone designed to support heavy combined radial and axial loads in demanding industrial and mobile equipment. Its separable cone design simplifies installation and maintenance while providing high load capacity, accurate shaft alignment, and extended service life. It is commonly used in industrial gearboxes, rolling mills, mining equipment, construction machinery, heavy-duty axles, and power transmission systems.

Applications:

The Timken 558A Tapered Roller Bearing Cone is engineered for applications requiring reliable radial and thrust load support, precise shaft positioning, and dependable rotational performance. It is designed to mate with the Timken 552A bearing cup and is widely used in industrial gearboxes, mining and aggregate equipment, rolling mills, heavy-duty conveyors, agricultural machinery, and power transmission systems.

Technical Specifications:

• Manufacturer Part Number (MPN): 558A
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Cone
• Bearing Type: Single Row Tapered Roller Bearing (TS)
• Cone Part Number: 558A
• Compatible Cup Part Number: 552A
• Series: 555 Series
• Design Units: Inch
• Cage Material: Stamped Steel
• Bore Diameter (ID): 2.3750 in (60.325 mm)
• Inner Ring Width (B): 1.4440 in (36.678 mm)
• Overall Bearing Width (with 552A Cup): 1.5000 in (38.100 mm)
• Dynamic Radial Load Rating (C90): 11,100 lbf (49,400 N)
• Dynamic Radial Load Rating (C1): 42,900 lbf (191,000 N)
• Dynamic Axial Load Rating (Ca90): 6,590 lbf (29,300 N)
• Static Radial Load Rating (C0): 55,700 lbf (248,000 N)
• Maximum Shaft Fillet Radius: 0.140 in (3.600 mm)
• Shaft Backing Shoulder Diameter – Frontface (da): 2.72 in (69 mm)
• Shaft Backing Shoulder Diameter – Backface (db): 2.99 in (76 mm)
• Effective Center Location: -0.37 in (-9.4 mm)
• Geometry Factor (Cg): 0.111
• K Factor: 1.69
• Weight (Cone Only): 9.28 lb (4.21 kg)
• Typical Applications: Industrial Gearboxes, Rolling Mills, Mining Equipment, Construction Machinery, Heavy-Duty Power Transmission Systems.

Common Replacements:

• SKF Equivalent Tapered Roller Bearing Cone
• NTN Equivalent Tapered Roller Bearing Cone
• Timken 552A Bearing Cup