A Perfectly Centerless Ground Bar

Achieving extremely precise roundness with very tight tolerance is a walk in the park with our advanced centerless grinding solutions

As the demand for closer tolerances on bar diameters and finer surface finishers increases, Advance Grinding Services, Inc. continually performs. The use of advanced CNC machines is true to many purchasing precision ground bars, so we ensure tight diameter tolerance and super-fine surface finishes in every bar and product.

Centerless ground bars have can have a tolerance up to .0001” and a very fine micro finish. The perfectly ground and polished bar can even be achieved in out-of-round material, through a rigid process during the grinding operation. Three-point gages are used to ensure the workpiece in its proper place and in the proper hold. Bars may be cold-drawn before being ground to meet customers’ demand for specific finished physical properties.

Our metal operators always consider the following factors in grinding centerless ground bars:

  • Internal structure
  • Hardness
  • Depth of decarburization

Considering factors of setting up the wheel is also very important to bring out a perfect product

1. Proper distance between the grinding wheel and the regulating wheel

As a three-point positioning method used in the process, the proper distance between the wheels is a must! This will provide bar size consistency and accurate surface finish in every workpiece.

2. Regular grinding wheel dressing

The faulty dressing can lead to uneven fine lines or wavy traverse lines, leaving ragged wheel edges. Diamond dressed wheels should be maintained at an even rate. Due to the thorough grinding, grains become dull and so wheels should be redressed at times.

3. Type of abrasive grains

Diamond grains are best recommended in the grinding process since diamonds are sharp and hard to break. They should not be allowed to dwell on the wheel and should be dressed across the face of the wheel only, starting at the edge.

4. Location of the workpiece between wheels

The workpiece must be placed properly in the process and in proper hold between the wheels. The location of the workpiece is critical in achieving that perfect grinding process.

5. Proper Implementation of work support blades

Choose the proper work blades for your process. Change the blades to the softer material. It is best to use steel, aluminum bronze, or cast iron.

The process of meeting the correct tolerance and surface finish in all bar products is thoroughly monitored in each phase of operation. Proper surface grinding can easily be achieved with an understanding of basic fundamentals of grinding – and in that, we excel in all our operations.

To know about our premium cold-drawn product availability, contact Advance Grinding today! Advance Grinding has the capability for ultra fast turnaround rates and competitive pricing on any type of round bar. Get a quote today!

Contact Us