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High Precision Lapping on Bearing Spacers

High Precision Lapping on Bearing Spacers

High Precision Lapping on Steel Plate

High Precision Lapping Services

High Precision Lapping Services on Aluminum Ring

High Precision Lapping Services on Aluminum Ring

High Precision Lapping Services

Lapping (Loose Abrasive Polishing) is a specialized process by which metal part surfaces are made as close to perfectly and uniformly flat as possible. Lapping can also be used to polish metal surfaces to a fine finish; with certain metals, a mirror finish can be achieved.

Since 1966 Petersen Precision has been providing industry-leading lapping services for a wide range of industries. We utilize highly effective lapping equipment that has been modified and perfected over the years to run more consistently and efficiently than most “high performance” lapping systems on the market. Our customized lapping equipment is also less expensive to operate, which translates to cost savings on your project.

Contact Us for more information regarding our precise metal component high precision lapping services, or call us at 650-365-4373 and we will gladly assist you with any lapping questions that you may have. Petersen Precision is your trusted source for high precision lapping services.

Advanced Lapping Capabilities

Lapping is an advanced surface flattening process that achieves flatness tolerances of 0.0005 in. to 0.00002 in. The pressure on the parts and the duration of the process can be finely tuned to accommodate for the part material and the final finish required. Under perfect conditions, parts can be lapped to within 10 to 20 millionths of an inch flatness. Although lapping is an abrasive process, it differs from fine grinding or honing because it uses a loose style abrasive instead of bonded abrasives like grinding wheels.

High Precision Lapping for Harder Materials

The microfinishing lapping process allows for harder materials to be lapped to a more accurate tolerance than softer materials. Similarly, harder materials can be polished to a higher finish than softer ones; only very hard materials can be lap polished to a true mirror finish.

Lapping Process Considerations

High precision lapping is an averaging process where the greatest material removal occurs where the high points of the surface of the part contact the flat lap plate. The object is to produce parts with a uniformly smooth and flat surface. A lapped surface displays a dull, non-reflective and multi-directional appearance. Factors to consider before choosing a lapping service include:

  • Type of material that is processed
  • Plate speed
  • Work-piece pressure
  • Cutting Abrasive

During the lapping process the surface finish of the part becomes smoother, while the Geometry of the processed surface becomes flat or round in contour. Throughout the lapping process some amount of material is removed from the surface of the component.

High Precision Lapping Applications

Lapping is a finishing process that is accomplished by utilizing loose abrasives. The types of applications that generally benefit the most from lapping include:

  • High Precision Thickness
  • High Precision Flatness
  • Enhanced Surface Finish

Fine Grinding / Double Sided Lapping Services

In addition to traditional single-sided lapping processes, we also offer fine grinding, also known as double sided lapping. Operating on the same principal as standard lapping, fine grinding works both sides of the part at once, utilizing a bonded abrasive plate instead of a loose abrasive and moving the parts in an orbital motion between the abrasive plates inside carriers. 

Our fine grinding machinery allows for a much tighter thickness and parallelism control of processed parts. The double-sided nature of the fine grinding process makes it possible to achieve parallel flatness on both sides of a part, even when the opposite faces are not the same geometry. Rather than lapping one side of the part, then flipping it over to lap the other side, both sides are worked simultaneously to create high parallelism with an even removal of material.

Lapping & Fine Grinding vs Grinding

The biggest difference between lapping & fine grinding and other similar machining operations such as double disk grinding, is that lapping and fine grinding don’t use a single or multiple point cutting tool like the leading edge of a wheel. Lapping and fine grinding cut chips by way of a flat face abrasive process that focuses on high spots on the face(s) while applying an orbital motion that averages out the cutting as much as possible. Grinding processes like double disk grinding and Blanchard grinding push parts into the leading edge(s) of their cutting wheels that does not have the averaging affect that the orbital motion cutting can obtain.

Discover Materials Used with High Precision Lapping Services

 Learn about the materials Petersen Precision specializes in for high precision lapping and other precision parts.

 

High Precision Lapping on Bearing Spacers

High Precision Lapping on Bearing Spacers

High Precision Lapping on Steel Plate

High Precision Lapping Services

High Precision Lapping Services on Aluminum Ring

High Precision Lapping Services on Aluminum Ring