Carlisle, PA-based PR Hoffman Machine Products has been providing cutting-edge technology to high-tech industries since 1938. As a global technology leader, we are able to provide innovative solutions to companies located around the world.
Our extensive product line includes lapping and polishing machines designed to help you achieve superior flatness, surface finish and parallelism. All of our products are adapted to meet your specifications for form and fit.
Our certification as an ISO 9001:2008 company ensures our commitment to delivering high-quality products, including customized lapping and polishing carriers.
Lapping carriers (also called workholders) are manufactured by PR Hoffman Machine Products for a wide variety of planetary lapping and polishing machines including those manufactured by P.R. Hoffman, Speedfam, Peter Wolters AG, Hamai, Somos, Fujikoshi, Strausbaugh, Melchiorre, Lanzhou, Lapmaster and a variety of specialty machines adapted for unique applications.
We can create a custom drawing that you can review to ensure the design meets your exact specifications. If you have a drawing or sample part for a lapping or polishing process, PR Hoffman would welcome the opportunity to provide a detailed quotation for your review.
Lapping carriers are available in a wide variety of materials and thicknesses, including an inventory of more than 20 spring steel thicknesses. See our material description pages for additional details.
PR Hoffman uses a wide variety of state of the art manufacturing methods to create your lapping carriers including, precision punching, Wire-EDM cutting, CNC machining, CNC routing, and Laser cutting. With these options, nearly any lapping carrier configuration is available. We will recommend the most cost effective method based on your machine and volume requirements.
Insert Carriers for Wafer Processing: The insert carrier is an exclusive PR Hoffman design widely used in the semiconductor industry (and other high value wafer industries) to protect the edge profile of the wafer while providing the strength and durability of a traditional steel carrier. This type of carrier is commonly used for processing 100mm, 125mm, 150mm, 200mm, 300mm, and 450mm silicon wafers.
Our insert lapping carriers can greatly improve Total Thickness Variation. Using a unique combination of customized design and high-quality materials, the wafers are afforded greater freedom of rotation, which reduces TTV during the lapping or polishing process.
We offer insert lapping engineering from a variety of different high grade plastics to meet the widest possible range of processing functions.
With PR Hoffman, you get:
|Spring Steel||Spring steel is the strongest and most durable carrier material. The tightest flatness and thickness tolerances are available in PR Hoffman Steel Carriers.|
|Cold Rolled Steel||Excellent for thick sturdy parts.|
|Blue Steel||Primary used for small carriers running thin parts.|
|Stainless Steel||Perfect for polishing applications that require corrosion free process|
|G-10 / FR-4||Fiberglass reinforced epoxy. Excellent alternative to steel. Use in applications that prohibit steel but still requires a carrier with strength and durability|
|Phenolic||Linen, canvas or paper reinforced phenolic resin. Use in processes that cannot tolerate the fiberglass but requires some carrier strength. Best suited for use with oil based slurries.|
|PVC||Less costly option for thicker carriers. PVC offers chemical inertness and high strength to weight ratio.|
|Polycarbonate||Small Carriers for use in nonabrasive environment, reduced strength but also reduces scratching of reinforced alternatives.|
|Vinyl||Small Carriers for use in nonabrasive environment. Used primarily for short quick runs on small machines.|
In addition to providing state-of-the-art lapping carrier designs and products, PR Hoffman also makes serving our customer base a top priority. Our strong worldwide representation ensures we can serve you, wherever in the world your business is located. We employ an international sales force so we can quickly address our customers' needs.
We go to great lengths to stock a complete inventory of raw materials and finished goods via our extensive partnership arrangements with vendors from around the world. You also get access to numerous technical resources to improve your product and industry knowledge.
We believe paying attention to the smallest details benefits our customers in the long run. At PR Hoffman, your success is the key to our success.
Please contact PR Hoffman Machine Products, to discuss your lapping carrier requirements. We’ll be happy to provide you with additional information or answer any questions you may have.Contact Us Today