Centerless Grinding

Centerless grinding and O.D. grinding are effective methods of surface grinding for round/cylindrical parts to achieve better roundness and ultra-fine OD surface finishes and ultra-tight tolerances parts.

We have decades of experience meeting the stringent regulations and certifications for the automotive, aerospace and medical device industries, which serve as benchmarks for all of the products we manufacture.

Custom-made products

For the purpose of achieving exceptional finishes and tight OD tolerances, centerless grinding is the usual process after CNC Swiss or CNC Turning of precision machined components.

We offer a full complement of grinding services to satisfy the varied needs of products: In-feed grinding, Through-feed grinding and End-feed grinding, Cylindrical grinding, and Honing. For creating the finest surface finish and micro-hardness, the burnishing process is one of the more advanced finishing techniques we use.

Parts produced by this type of machining are commonly found in aerospace, hydraulics, motion control, medical, and high-end electronic industries. Such as shafts, hydraulic valves, thread rods, pins, bushing, fasteners, and similar products.

Fitted for your design and purpose

It is clear that grinding solution is effective, as it allows us to achieve smoother surface polishes, bring out tighter dimensional tolerances, and hold even higher degrees of straightness and roughness in your engineering parts.

For 1000 to 1 mill pieces production runs

Diameter from 2mm (0.08”) to 25.4mm (1”)

Tolerance +/- 0.005mm (0.0002”)

Roughness Ra 0.1µm (by Burnishing)

Straightness 25 µm (0.0010″)

Parts require smooth surface features

Grinding after heat treating eliminates distortion

Delivers repeatable quality

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KnowledgeAdvantage of Centerless Grinding process

Compared to other machining and manufacturing processes, centerless grinder offers a number of benefits.

No room for deflection

The workpiece is rigidly supported by the regulating wheel, which presses it to the abrasive grains on the grinding wheel. It is well supported under the grinding cut and for the full length of the cut. Thus, there’s no room for deflection to occur in the process. This has also allowed heavier passes other than grinding between centers.

Ability to grind brittle materials and distorted parts

In centerless grinding, there is no axial thrust imposed on the workpiece during grinding which results in the ability to grind different sizes and geometrical figures. It is possible for the centerless grinder to grind long pieces of brittle materials, and even distorted parts, due to the absence of the end pressure.

Short loading time

The short loading time allows for a continuous process compared to grinding between centers. As the name implies, there is no need to support the workpiece in the center. The workpiece goes directly into a “through-grinding” process. The work blade simply holds the workpiece in place and at the correct height, which is critical to achieving the desired diameter tolerance and roundness of the bar material.

Grind large quantities

Centerless grinding can essentially be used in working any size workpiece. Tools like gravity chutes, hopper feeders and magazines are used to adapt the mechanism to different part sizes.

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About ourCenterless Grinding Capabilities

Our Equipment
Tolerance Control
Material we machined
Industry Standards
Production Lead time
Quality Assurance

Available for machining different part positions and achieving specific technical requirements.

Cylindrical grinding machine
Internal grinding machine
Tool grinder
Centerless grinding machine
Honing grinding machine
Burnishing machine

- Surface roughness by grinding is about Ra 0.2µm. tolerance is close to +/- 0.005 mm (0.0002″).
- Surface roughness by ultra-precision mirror grinding is up to Ra 0.1µm. Straightness up to 25 µm (0.0010″). Concentricity up to 50 µm (0.002″).

Alloy material are suitable for various part applications and industries.

- - Metals (e.g., stainless steel, carbon steel, aluminum, brass).
  - Exotics Alloys (e.g., Hastelloy and Inconel).

- - ISO 9001:2015 Compliant
  - RoHS and REACH Compliant
  - Conflict Free Minerals

- - Prototype 2-3 weeks (typical)
  - Production is 4-6 weeks (typical)
  - Quoted on job by job basis
  - Rush Services Available

- - We take customer trust seriously, employing proven quality management principles to enhance customer satisfaction and continually improve our performance and capabilities.
  - We have decades of experience meeting the stringent regulations and PPAP compliant for the automotive, aerospace and medical device industries, which serve as benchmarks for all of the products we manufacture.

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Application of Centerless Grinding products

Parts and products produced through grinding find application in many industries, including, but not limited to, the following:

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