HM807040/HM807010 Inch Tapered Roller Bearing 44.45x98.425x30.16mm Cone Cup Truck Axle Bearing

1. Product Overview

HM807040/HM807010 is a standard inch-size single row separable tapered roller bearing assembly, consisting of cone HM807040 and matching cup HM807010, overall dimensions 44.45×98.425×30.16mm.

Model Code Definition

• HM807040: Cone assembly with logarithmic crowned tapered rollers and stamped steel cage, optimized for uniform stress distribution
• HM807010: Single-flange outer cup, fully separable from cone for easy disassembly, inspection and replacement

This bearing is designed to withstand combined heavy radial load and unidirectional axial thrust load. Tapered roller contact structure delivers outstanding impact resistance. Superfinished raceways and rollers reduce friction heat and extend service life. Widely used in heavy truck wheel axles, semi-trailer hubs, construction machinery, agricultural vehicles and mining transport equipment.

2. Technical Specifications

Drawings and long-term load durability test reports can be provided on request.

3. Core Advantages

1. Separable cone and cup design: Inner and outer parts can be installed and replaced separately without full shaft disassembly
2. Crowned tapered rollers: Eliminate edge stress concentration, improve fatigue resistance under heavy shock loads
3. High composite load capacity: Supports large radial load and single-direction axial thrust, ideal for wheel and axle transmission positions
4. Durable stamped steel cage: Stable roller positioning under frequent vibration and bumpy operation, not easy to deform
5. Ultra-smooth superfinished surfaces: Lower running temperature, less grease consumption and avoid premature bearing burnout
6. Universal inch standard dimensions, fully interchangeable with mainstream brand bearings for convenient aftermarket replacement
7. Customizable service: Special high-temperature grease, outer ring laser marking, adjustable clearance tolerance

4. Application Scenarios

• Heavy commercial vehicles: Truck front and rear wheel hubs, semi-trailer axles
• Construction machinery: Loader hubs, excavator auxiliary transmission shafts
• Agricultural equipment: Large tractor axles, harvester rotating assemblies
• Mining transport: Ore transport vehicle wheel hubs, heavy-duty gearboxes

Suitable for OEM assembly and maintenance replacement of heavy mobile machinery with composite radial and axial loads.

5. Why Choose GQZ Bearing

We have 25 years of production experience in inch tapered roller bearings including HM807040/HM807010 sets. All raw materials adopt vacuum smelting GCr15 steel, complete quenching and tempering heat treatment to ensure stable hardness and metallurgical structure. We provide full OEM & ODM customization including clearance adjustment, special lubricants and exclusive laser logos. Strict full-process inspection covers raw material testing, raceway grinding, roller sorting and vibration aging tests. Professional engineers offer 24-hour technical support for bearing matching, shaft tolerance selection and lubrication plans. Factory direct bulk price, stable production capacity and sufficient stock for global vehicle machinery spare parts buyers.

6. Quality Control

1. Raw material inspection: Chemical composition, hardness and metallurgical structure testing
2. Heat treatment: Integral quenching and stress relief tempering to eliminate internal residual stress
3. Precision machining: CNC turning, raceway superfinishing, mirror polishing of tapered rollers
4. Cage processing: Stamped forming with precise positioning to maintain consistent roller gaps
5. Dust-free assembly: Quantitative grease filling for high/low temperature working conditions
6. Comprehensive performance testing: High-speed rotation aging, composite load fatigue test, long-term clearance stability test
7. Finished product re-inspection: Full dimension measurement, surface defect checking, anti-rust oil coating, neutral moisture-proof export carton packaging

Each batch undergoes vibration and noise testing to guarantee stable operation under harsh dusty and bumpy working environments.

7. Get A Quote

Send your inquiry for HM807040/HM807010 tapered roller bearings used on heavy truck axles, semi-trailer hubs and construction machinery. Complete one-stop services after inquiry submission:

1. Standard quotation document sent within 24 working hours
2. Technical guidance on paired bearing installation, shaft/housing tolerance and regular relubrication
3. Upgrade options: P5 high precision grade, enlarged clearance, high-temperature anti-oxidation synthetic grease
4. Competitive factory bulk price for large quantity orders

Please state order quantity, working environment and load conditions to receive complete formal quotation documents.

8. FAQ