Advantages of Precision Machined Stainless Steel Hollow Bar

Using Precision Machined Stainless Steel Hollow Bar offers significant advantages in manufacturing components requiring tight tolerances and specific surface characteristics. Starting with a hollow bar, as opposed to solid bar, inherently reduces material cost and initial machining time required to remove core material. When this hollow bar is further precision machined by the supplier or a specialist, it provides a near-net shape component blank.

Precision machining processes applied to hollow bars can include:

• Turning/Boring: Achieving highly accurate outer diameters (OD) and inner diameters (ID) with excellent roundness and cylindricity.
• Honing/Skiving & Roller Burnishing: Producing exceptionally smooth and precise internal surface finishes, critical for hydraulic/pneumatic cylinders and bearing applications.
• Centerless Grinding: Providing very tight tolerances and fine finishes on the outer diameter.
• Drilling/Tapping/Milling: Adding features like holes, threads, or slots as per component design.

The key benefit is consistent quality and dimensional accuracy, reducing scrap rates and simplifying final component manufacturing. Applications for precision machined stainless steel hollow bar include hydraulic cylinder barrels, high-pressure fittings, bushings, spacers, bearing housings, and various components in the automotive, aerospace, and medical device industries where precision and material integrity are crucial. Specifying a Precision Machined Stainless Steel Hollow Bar ensures components meet demanding performance requirements.

Typical Achievable Tolerances/Finishes:

Machining Process	Parameter	Typical Achievable Range
Turning/Boring	Diameter Tolerance	IT7 – IT9 (ISO 286)
	Surface Roughness (Ra)	0.8 – 3.2 碌m
Honing	Surface Roughness (Ra)	0.1 – 0.4 碌m
Skiving & Roller Burnishing	Surface Roughness (Ra)	0.1 – 0.4 碌m
Centerless Grinding (OD)	Diameter Tolerance	IT6 – IT8