Product Name：

Precision Machined 45# Steel Flange Hub / Bearing Seat – Quenched & Tempered for Mechanical Transmission

Product Description

This high-strength mechanical component is crafted from 45# medium carbon steel, undergoing quenching and tempering heat treatment to achieve optimal balance of toughness and wear resistance. The part features a central bore for shaft mounting, a flanged outer rim with bolt holes for secure assembly, and in some variants, a square base for stable installation on machine frames. Ideal for use as bearing housings, coupling hubs, or structural connection plates in gearboxes, conveyors, industrial motors, and automation equipment. The as-machined surface finish ensures dimensional accuracy and compatibility with further coatings or fits as required by end-use applications.

Specifications：

Material: 45# Medium Carbon Steel (Equivalent to AISI 1045 / DIN C45)

Heat Treatment: Quenched & Tempered (Q&T) – Hardness HRC 25–32 (typical for structural strength)

Surface Finish: As-machined (Ra 3.2–6.3 μm), no additional coating

Key Features: Central through-bore, flanged mounting face, threaded or clearance bolt holes

Typical Applications: Gearbox housings, motor mounts, conveyor roller supports, coupling adapters

Key Features & Advantages：

Optimized Mechanical Properties: 45# steel + Q&T delivers excellent fatigue resistance and impact toughness for dynamic load environments.

Versatile Mounting Design: Flange and square-base variants allow flexible integration into diverse mechanical assemblies.

Cost-Effective Durability: No surface plating reduces cost while maintaining sufficient hardness for non-corrosive industrial settings.

Precision Machining: Tight tolerances on bore diameter and bolt hole positions ensure seamless fitment with shafts and mating components.