56425/56662 Bearing 4.25x6.625x1.4375 Single Row Tapered Roller Bearing TS Imperial Series

Key Features & Design:

• TS (Tapered Single) Design: This is the most basic and most widely used type of tapered roller bearing, consisting of two separable components: the cone (inner ring) assembly (Part No. 56425) and the cup (outer ring) (Part No. 56662).

• Inch Series (Imperial): The bearing conforms to inch-based dimensions, making it ideal for heavy-duty industrial and transportation equipment originally designed to imperial standards.

• Case Carburized Steel: The bearing components are manufactured from case carburized steel, providing a hard, wear-resistant surface while maintaining a tough, ductile core to withstand heavy impact loads.

• Open Design (No Seals): The bearing is supplied as an open type, allowing for custom lubrication solutions based on specific application requirements.

• Stamped Steel Cage: The bearing features a stamped steel cage, offering excellent durability and high-speed capability.

Precision & Performance:

• Precision Rating: Manufactured to Class 4 precision standards, ensuring consistent quality and dimensional accuracy.

• High Load Capacity: Dynamic radial load rating (C1) of 50900 lbf (226000 N) and static radial load rating (C0) of 79700 lbf (355000 N) provide robust performance in demanding applications-11.

• Operating Temperature Range: Suitable for operation from -40°F to 250°F (-40°C to 120°C), accommodating diverse environmental conditions.

• Interchangeable: Cross-referenced with Chinese designations 7912E and 7921E for easy replacement.

Applications

Thanks to its separable design (cone and cup), robust construction, and high load capacity, the 56425/56662 tapered roller bearing is widely used in industries that demand reliability under heavy loads.

Primary Industries:

• Commercial Vehicles & Transportation – Truck axles, wheel ends, and differentials

• Construction Equipment – Excavators, loaders, bulldozers, and cranes

• Mining & Metallurgy – Crushers, conveyors, vibrating screens, and grinding mills

• Agricultural Machinery – Heavy tractors, harvesters, and tillage equipment

• Railway Applications – Rolling stock axle boxes and traction motors

• Energy Sector – Wind turbine gearboxes and power generation equipment

• Industrial Machinery – Gearboxes, reducers, pumps, and compressors

• Outdoor Power Equipment – Large-scale landscaping and forestry machinery

• Civil Aviation – Ground support equipment and certain aircraft systems

Key Application Characteristics:

• Mounted in Opposing Pairs: When a single row tapered roller bearing bears a radial load, it generates an axial component force. Therefore, the bearing must typically be mounted in opposing pairs (face-to-face or back-to-back) on a shaft to balance this axial thrust

• Replacement of Cone & Cup: To maximize reliability and service life, both the cone (inner ring) and the cup (outer ring) should be replaced at the same time-.

• Lubrication: Regular and appropriate lubrication (grease or oil) is critical to maintain performance and prevent premature wear-.

56425/56662 Technical Specifications Summary Table