45# Tempered Steel Precision Flange Bearing Housing | Step-Type Heavy-Duty Support Sleeve

Integrated 45# steel flange bearing housing serves as critical locating & supporting component for hydraulic units, reducers and automation transmissions. Made of tempered 45# steel, fully CNC turned with combined flange & stepped bore structure. Precision inner bore fits bearing tightly, evenly distributed flange holes for bolt fastening to secure coaxial running under heavy load.

Core Specs

Application: Hydraulic machinery, gear reducers, automated production lines, construction machinery transmissions

Process: Steel cutting → quenching & tempering → CNC precision turning → flange drilling → deburr & chamfer → anti-rust finish

Precision: ±0.02mm critical tolerance, H7/H8 bore tolerance, end runout ≤0.015mm, Ra1.6 inner surface

Equipment: CNC lathe, vertical machining center, heat treatment furnace, precision grinder

Material: 45# steel HB255~285 after tempering, high toughness, wear & fatigue resistant

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

Lead time: Samples 4-6 days, bulk 7-12 days

Advantages

✅ One-piece integrated design improves structural rigidity & anti-deformation capacity

✅ Stepped inner bore limits bearing axial displacement for stable positioning

✅ Evenly spaced flange holes for uniform stress and reliable installation

✅ Tempered steel withstands continuous heavy-load long-term operation

Tempered flange housing, solid load-bearing structure; precision bore fixes bearing for steady durable transmission.

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