48393/20 Single Row Inch Tapered Roller Bearing 100.013x152.4x39.688mm Separable

1. Product Overview

48393/20 inch single row tapered roller bearing, separable cone 48393 + cup 48320, dimension 100.013×152.4×39.688mm.
Code Definition

• 48393: Inner cone assembly with stamped steel cage and tapered rollers
• 48320: Outer single cup ring

Split cone and cup design enables separate installation and disassembly. Standard contact angle bears heavy combined radial and unidirectional axial loads. High density tapered rollers maintain stable performance under long-term road shock and vibration. Open structure widely applied on heavy truck axles, semi-trailer wheel hubs and heavy commercial vehicle transmission assemblies.

2. Technical Specifications

Installation drawings and vehicle road vibration durability test reports available on request.

3. Core Advantages

1. Separable cone & cup structure simplifies wheel hub assembly and maintenance
2. Optimized contact angle carries heavy radial plus unidirectional axial combined loads
3. Reinforced stamped steel cage resists continuous road shock and vibration
4. Mirror polished tapered rollers lower friction to extend service mileage
5. High static load rating adapts full-load heavy transport working conditions
6. Standard inch-metric dual dimension for direct aftermarket interchange replacement
7. Optimized internal geometry reduces edge stress to prevent raceway spalling
8. Customizable precision grade, heavy-duty EP grease and outer ring laser marking

4. Application Scenarios

• Heavy duty truck front and rear wheel hub axle bearing sets
• Semi-trailer, container trailer rotary hub support components
• Medium heavy commercial vehicle drive and transmission assemblies
• Agricultural heavy transport vehicle wheel rotary parts
• Construction light heavy-duty machinery axle positioning bearings

Fit OEM production and aftermarket maintenance of heavy commercial vehicles and transport machinery.

5. Why Choose GQZ Bearing

• 25 years specialized production of inch series automotive tapered roller bearings including 48393/20 heavy truck axle models.
• Global unified inch-metric dual dimensional standards, fully interchangeable with mainstream imported equivalent bearings.
• Complete OEM & ODM custom service for precision grade, heavy-duty anti-shock EP grease and outer ring identification marking.
• Strict full-process inspection: raw material hardness test, roller dimensional sorting, long-cycle vehicle vibration aging and batch dimensional screening.
• Professional vehicle bearing engineers provide combined load calculation, hub interference fit and long mileage lubrication guidance within 24 working hours.
• Factory direct bulk wholesale pricing, stable continuous mass supply for global commercial vehicle spare part buyers.

6. Quality Control

• Raw material composition and hardness inspection for GCr15 cone, cup and tapered roller blanks.
• Precision forging, multi-cycle stress relief tempering and ultra-precision tapered raceway superfinishing.
• Roller high-temperature quenching, mirror polishing and automatic dimensional grouping sorting.
• Stamped steel cage forming, quantitative extreme pressure heavy-duty grease filling process.
• Performance verification: vehicle road shock cycle aging test, continuous full-load rotation durability test, contact stress stability test.
• Final full dimension, bore roundness and raceway surface reinspection before anti-rust treatment and neutral export carton packaging.

Each production batch undergoes long-term heavy combined load simulation test to guarantee stable heavy-load operation performance.

7. Get A Quote

Submit purchasing demand for 48393/20 tapered roller bearings used on heavy truck axles, semi-trailer wheel hubs and commercial vehicle transmission systems.
Full one-stop services after inquiry:

1. Official standardized quotation document within 24 working hours
2. Technical support for combined load matching, hub installation and long-mileage anti-vibration lubrication
3. Custom upgrades: P6 precision grade, high-temperature resistant synthetic grease
4. Competitive factory bulk price for large-volume single model orders

Please state order quantity and working conditions (full load transport, frequent road shock) to receive complete formal quotation documents.

8. FAQ