Centerless Grinding Wheels cut cycle times and noise levels.

Press Release Summary:

Available with ceramic, aluminum oxide, silicon carbide grain, and abrasive blends to maximize grinding safety and efficiency, Norton Century45 Wheels provide continually sharp wheel face that achieves over 30% more stock removal versus standard products. Wheels also minimize grinding noise levels by as much as 23.2 dB, even with hard-to-grind alloys such as Inconel 718. Products are suited for bar grinding, fastener and tool grinding, automotive/aerospace components, and bearing applications.

Original Press Release:

New Norton Century45(TM) Centerless Grinding Wheels Dramatically Increase Wheel Life, Improve Stock Removal and Reduce Cycle Times.

WORCESTER, MA, USA - Saint-Gobain Abrasives, the world’s leading manufacturer and supplier of performance-engineered abrasives, has launched a new line of centerless grinding wheels to its bonded abrasives portfolio.

The newly developed Norton Century45 centerless bond platform features an exclusive chemistry that greatly improves grain retention in the wheel. Better grain retention means wheels are constructed with more porosity for a given hardness. This translates into wheels having a hard grade with the performance of a softer grade, providing a range of benefits.

Norton Century45 wheels are available with ceramic, aluminum oxide, silicon carbide grain and abrasive blends to maximize user grinding safety and efficiency. These wheels reduce cycle times by up to 50%, improve stock removal by over 30% and increase wheel life from 30%-100% versus standard products currently on the market.

Norton Century45 provides a continually sharp wheel face that achieves over 30% more stock removal, reducing grinding times through fewer passes to achieve optimal results. Operators will generate more parts through reduced production cycle times when using Norton Century45 wheels.

Norton Century45 centerless grinding wheels also can decrease grinding noise levels by as much as 23.2dB, even when grinding hard-to-grind alloys such as Inconel 718, thus increasing operator safety. 

To put this reduction in context, many commercially-available foam ear plugs offer Noise Reduction Ratings in the range of 25 to 28dB.

Norton Century45 is ideal for bar grinding, fastener and tool grinding, automotive or aerospace components, as well as bearing applications. Whether in a high production grinding facility or job shop, Norton Century45 can significantly reduce grinding costs while increasing safety and production throughput.

To learn more about the entire Norton Industrial product line, visit

Case Histories

Two case histories, including one featuring Inconel and alloys and one featuring 1045 stainless steel (300 series) and copper, are available on page #3 and #4 of this release.

About Saint-Gobain Abrasives

Backed by its experience and its capacity to continuously innovate, Saint-Gobain, the world leader in the habitat and construction market, designs, manufactures and distributes high-performance and building materials providing innovative solutions to the challenges of growth, energy efficiency and environmental protection. With 2015 global sales of $44 billion, Saint-Gobain operates in 64 countries and has more than 180,000 employees. For the fourth year in a row, the Company has been ranked by Thomson Reuters as one of the Top 100 Global Innovators.

In the United States and Canada, Saint-Gobain has more than more than 150 locations and approximately 15,000 employees, with sales of approximately $5.7 billion in 2015. Saint-Gobain is the world leader in abrasives and the only international manufacturer to offer a full complement of abrasives products to customers worldwide.

Saint-Gobain’s Abrasives business employs nearly 11,000 people at 64 manufacturing facilities in 27 countries. In the United States and Canada, Saint-Gobain’s Abrasives business has more than 2,100 employees at eight manufacturing sites.

For more than 30 years, Saint-Gobain Abrasives has supported the United States Luge Association by providing engineering expertise to improve the performance and speed of luge athletes and by donating its Norton® brand of abrasive products. Since 2009, Saint-Gobain has been the primary sponsor of the USA Luge team.

For more information about Saint-Gobain, visit and the twitter account @saintgobain or download the “Saint-Gobain Shareholder” application for tablet and smartphone.

Case Histories:  Norton Century45™

1.  Inconel, alloys

Application:   Centerless bar grinding

Part Diameter & Part Length: 0.5" - 1.75" in diameter; 28 feet in length

Norton Test Wheel:  32CA60-PB45 (10"), 32CA80-PB45 (10")

Competitor Wheel:  24"x 20"x12" 80-grit silicon carbide resin wheel

Results:   The Norton Century45 grinding wheel was able to increase stock removal from 0.005" per pass to 0.012" per pass, showing an improvement of 140%. The Norton wheel also produced a 100% increase in wheel life while offering a 50%reduction in cycle time. Additionally, it was observed that the Norton wheel significantly reduced noise during grind. 


2.  1045 Stainless Steel (300 series), copper

Application:   Centerless bar grinding

Part Diameter & Part Length: 1"-2" in diameter; 10" - 144" in length

Norton Test Wheel:  3NQAC54-RB45, Norton Quantum ceramic alumina resin wheel

Competitor Wheel:  24" x 8" x 12" 46-grit aluminum oxide resin wheel

Results:   With Norton Century45 grinding wheel, there was a 243% increase in G-ratio over the competitive wheel. An improved surface finish across the bar length was also observed.

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