Ball Screw Support Housing — CNC Milling & Boring

G7 precision boring · GD&T control · full CMM inspection

Ball screw support housing CNC milling — cast iron part with precision-bored bearing seat

Finished part: precision-bored bearing seat and machined mounting faces, with as-cast coated exterior

Specifications

Part Type	Ball screw support housing (floating end, for 32mm-class ball screws)
Material	Cast iron (customer-supplied casting, black coated)
Process	CNC 4-axis milling, two operations (front/back datum transfer)
Key Feature	Precision bored bearing seat: G7-class bore tolerance, Ra0.8 surface finish, sharp bore-bottom corner R≤0.5
GD&T	Parallelism, perpendicularity, and flatness controlled
Inspection	Full-dimension CMM inspection
Application	Machine tools, factory automation linear motion

Machining Highlights

🎯

Precision Boring

Boring insert wear is monitored in real time via bore surface finish and bottom-corner condition; inserts are replaced immediately when out of spec, keeping batch quality consistent.

📐

Two-Operation Datum Transfer

Datum transfer between front and back operations is tightly controlled to hold parallelism and perpendicularity between the bore axis and mounting face.

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Full CMM Inspection

Every dimension is verified on a coordinate measuring machine (CMM); parts ship only after all GD&T requirements pass.

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