45# Quenched & Tempered Precision Bearing Housing | Cone Guide Heavy-Duty Bearing Support

 45# steel precision bearing housing (Model XF350M-21.11.1), core positioning & support part for construction machinery and hydraulic transmission. Made of 45# steel with quenched & tempered hardness HB255-285, fully CNC turn-mill integrated machined with flange + cone guide structure. H8 tolerance inner bore ensures precise bearing fitting and coaxial positioning for heavy-load service.

Core Specs

Industries: Construction machinery, hydraulic transmission, heavy automation, reducer accessories

Process: Steel blanking → quenching & tempering → CNC turning/drilling/tapping → cone finishing → deburr & chamfer

Precision: Key tolerance ±0.02mm, inner bore Φ90H8, coaxiality ≤0.02mm, Ra1.6 surface finish

Equipment: CNC lathe, turn-mill center, tapping machine, heat treatment furnace

Material: 45# steel HB255~285, high strength, good toughness, wear & fatigue resistant

Post-processing: Heat treatment, deburr, chamfer, black oxide, anti-rust oil, polishing

Lead time: Samples 4-6 days, bulk 7-13 days

Advantages

✅ Cone guide tip for fast, easy bearing mounting

✅ Tempered high-strength steel for heavy load & anti-deformation

✅ H8 precision bore reduces bearing abrasion for stable rotation

✅ Multi-hole flange for solid installation & wide compatibility

Toughened bearing housing, easy assembly with cone guide; precise coaxiality for stable heavy-load transmission.