4T-28579/28520 Separable Single Row Imperial Tapered Roller Bearing Cone & Cup 49.987x89.98x24.75mm Light Vehicle Hub Equipment

The 4T-28579/28520 single row tapered roller bearing adopts separable inner cone assembly and independent outer cup structure. It can withstand combined radial load and unidirectional axial thrust load, widely matched to light truck wheel hubs, small trailers, farm tractors and medium-load transmission shafts with bumpy working conditions.

Bearing Set Model: 4T-28579/28520

Cone Part Number: 28579

Cup Part Number: 28520

Inner Diameter (ID): 49.987mm (1.968 inch)

Outer Diameter (OD): 89.98mm (3.5425 inch)

Overall Assembly Width T: 24.75mm (0.9744 inch)

Inner Cone Width B: 25.4mm

Outer Cup Width C: 19.987mm

Max Allowable Fillet Radius r: 2.3mm

Structure: Separable single row tapered roller bearing, single cone + single open cup

Cage Type: Stamped steel cage

Material: GCr15 high carbon chromium bearing steel

Basic Dynamic Load Cr: 83500N

Basic Static Load C0r: 116000N

Grease Limiting Speed: 4000rpm

Oil Limiting Speed: 5300rpm

Approximate Net Weight: 0.66kg

Operating Temperature Range: -40℃ ~ +120℃

Gear Type (if any): None

• Split separable cone and cup design simplifies hub assembly, disassembly and regular maintenance inspection
• Precision crowned tapered rollers disperse edge stress, stable low-vibration rotation under long-distance vehicle running
• Standard imperial inch dimension, fully interchangeable with mainstream aftermarket vehicle replacement bearings
• Medium heavy load bearing capacity adapts to combined radial and axial impact load of light transport equipment
• High hardness quenched bearing steel improves wear resistance and prolongs service cycle on rough road conditions
• Custom optional configurations: solid brass machined cage, special clearance for high-temperature working environment

This inch medium-load tapered roller bearing is widely used in:

• Light trucks, small trailers and agricultural tractor wheel hub rotary supporting assemblies
• Lawn maintenance equipment, small harvesters and farm transmission drive shafts
• General industrial medium-duty speed reducers and conveying roller supporting components
• Small construction compact rollers and mobile light machinery rotary parts

• 25+ years experience in imperial single row tapered roller bearing manufacturing
• Exported to many countries worldwide
• Rich OEM bulk order experience for light vehicle and farm axle bearing projects
• Strict full-process load fatigue, dimensional tolerance and rotation smoothness inspection before shipment
• Fast professional engineer technical response within 24 hours
• Stable mass supply for long-term agricultural machinery and light transport vehicle factory cooperation

• GCr15 bearing steel raw material composition and hardness inspection
• Precision grinding for inner cone raceway, outer cup raceway and tapered roller surfaces
• Standard quenching & tempering heat treatment control
• Radial-axial composite load durability fatigue test and full dimensional recheck
• Independent anti-rust oil treatment and separate plastic packaging for each bearing set

Looking for a reliable separable inch size single row tapered roller bearing supplier?

• Fast quotation within 24 hours
• Professional engineer technical support
• Custom clearance grade, brass cage and precision tolerance solution suggestions
• Competitive factory wholesale price