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View My Dashboard × Hello Customer #: -- Ship To: {{vm.session.shipTo.lastName}} {{vm.session.shipTo.firstName}}, Switch Address 1 && vm.session.language && vm.session.language.imageFilePath" 1 && vm.session.language && !vm.session.language.imageFilePath" ng-bind="::vm.session.language.languageCode" International Settings -- Sign Out -- Hello Customer #: -- Ship To: {{vm.session.shipTo.lastName}} {{vm.session.shipTo.firstName}}, Switch Address 1 && vm.session.language && vm.session.language.imageFilePath" 1 && vm.session.language && !vm.session.language.imageFilePath" ng-bind="::vm.session.language.languageCode" International Settings -- Sign Out -- 1" Cancel -- Login Account Ship -- Sign Out -- Search About Careers Contact Resources Catalogs Brochures Safety Data Sheets Educational Information Product Authentication -- Account Login My Account Sign Out Quick Order ☰ Processes ► ◄ Processes Honing Lapping Skiving + Roller Burnishing Deep Hole Drilling Products ► ◄ Products Honing ► ◄ Honing Horizontal Machines Vertical Machines Single Stroke Machines Tube Honing Machines Portable Hones Machine Automation Solutions Lapping ► ◄ Lapping Machines Tools Abrasives Filtration Flushing Fluids Skiving + Roller Burnishing ► ◄ Skiving + Roller Burnishing Machines Tools Deep Hole Drilling ► ◄ Deep Hole Drilling Drilling Processes Deep Hole Drilling Machine Deep Hole Drilling Tools Honing Tools ► ◄ Honing Tools Universal Honing Tools Standard Mandrels Custom Mandrels Diamond Plated Honing Tools External Hones Portable Hones Modular/MPS Tooling Multi-Stone Tools Engine Building Tools Shell 2C Tool Technical Data Abrasives ► ◄ Abrasives Universal Honing Abrasives Conventional Abrasives Superabrasives Portable Hone Abrasives Abrasive Brushes Technical Data Gages ► ◄ Gages Dial Bore Gages PG Precision Gages Engine Building Gages Filtration ► ◄ Filtration PF-150 SVF-15 Cutting Fluids ► ◄ Cutting Fluids Honing Fluids Lapping Fluids Deep Hole Drilling Fluids Legacy Products Repair Parts Custom Solutions ► ◄ Custom Solutions Machine Automation Solutions Services ► ◄ Services Custom Solutions Training Process Development Maintenance + Repairs Warranty Applications ► ◄ Applications Aerospace Air Conditioning + Refrigeration Automotive Diesel Engines Energy Engine Building Firearms + Defense Hydraulics Job Shops + Contract Machining Medical Small Engines Tool + Die Insights ► ◄ Insights Tradeshows + Events Latest Insights In The News Customer Service ► ◄ Customer Service Contact Customer Service How to Buy Financing + Leasing Maintenance + Repair Request Custom Product Request About Contact Resources ► ◄ Resources Catalogs Brochures SDS Educational Information Product Authentication My Account Careers ◄ × Our Vision is Precision For nearly 100 years, Sunnen has built a global business around delivering the highest levels of precision to our customers. Combining a robust distribution network with industry-leading technology, Sunnen integrates bore creation, sizing and finishing into one turnkey solution. Together, we’ll achieve extraordinary results. Read Our Story Sunnen Spotlight Automatic Machine Boosts Cylinder Production Sunnen and Prince Manufacturing teamed up in the development of a new automatic skiving and roller burnishing machine for producing cylinders at Prince’s Lewis & Clark plant. Read More Engineering Efficiency. Every Step of the Way. Shop By: Shop By Application Shop By Product Aerospace Air Conditioning + Refrigeration Automotive Diesel Engines Energy Engine Building Firearms + Defense Hydraulics Job Shops + Contract Machining Medical Small Engines Tool + Die Honing Lapping Skiving + Burnishing Deep Hole Drilling Honing Tools Abrasives Gages Filtration Cutting Fluids Legacy Products Repair Parts Custom Solutions Above and Beyond Honing We’re not just honing parts anymore—we’re honing processes. Our global service team works one-on-one with our customers to refine their operations, engineer custom solutions and deliver the hands-on training they need to be their best. View Service Options Solutions as Unique as Your Operation See how our team designs, builds and implements custom machinery to solve our customers’ complex needs. Latest Insights Sunnen SHDD Series Deep Hole Drilling System Watch Make a COVID-19 Face Mask using a Shop Towel Watch What's the Difference between Honing and Roller-Burnishing? 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