HH914449/12 Single Row Imperial Tapered Roller Bearing Separable Cone & Cup 66.675x177.8mm Heavy Truck Mining Equipment

The HH914449/12 is a single-row imperial tapered roller bearing composed of separable HH914449 inner cone roller assembly and HH914412 outer cup. It is standard inch size 66.675×177.8×57.15mm, capable of bearing heavy combined radial and one-way axial loads simultaneously. Optimized internal roller crowning reduces edge stress, stable under heavy impact load, widely used in heavy truck drive axles, mining machinery, port equipment and large industrial reducers.

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👉 Full technical datasheet and installation drawings available upon request

• Separable cone and cup independent assembly, convenient disassembly, maintenance and clearance adjustment
• Optimized crowned tapered rollers distribute load evenly, lower friction and operating temperature
• Large contact angle design provides outstanding heavy radial & unidirectional axial composite load capacity
• Standard universal inch size fully interchangeable with global HH series heavy-duty bearings
• High-hardness quenched steel delivers excellent wear resistance under dusty impact working conditions
• Custom precision grade, anti-rust surface treatment and reinforced cage versions available

👉 Heavy-duty imperial tapered roller bearing solution for truck, mining and port transmission devices

This inch heavy-load tapered roller bearing is widely applied in:

• Heavy-duty truck, semi-trailer drive axle and wheel hub assemblies
• Mining crushers, coal conveyors and large construction machinery rotary parts
• Port lifting equipment, metallurgical transmission shafts and industrial heavy gearboxes
• Agricultural large harvesters and off-highway heavy vehicle transmission systems

👉 Reliable high-load interchangeable inch bearing for heavy transportation & mining industry

• 25+ years experience in imperial HH series heavy tapered roller bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM bulk order experience for truck and mining inch size bearings
• Strict hardness, roller precision and heavy load durability inspection before shipment
• Fast professional technical reply within 24 hours
• Stable mass supply for long-term heavy vehicle and mining equipment manufacturers

👉 We focus on stable heavy-load impact resistance and long‑term business partnership

• Raw bearing steel incoming hardness inspection
• Precision grinding for tapered raceway and crowned rollers
• Standard quenching & tempering heat treatment for uniform surface hardness
• Dynamic heavy load test, assembly clearance matching and full dimensional inspection
• Anti-rust oil packaging and double recheck before delivery

👉 Consistent heavy composite load impact resistance performance guaranteed for every bearing set