The Viking centerless grinder is a compact abrasive finishing tool where the workpiece is supported on a work rest blade between two rotating wheels. Centerless grinding is not usually used for anything other than surface finishing, but it can be used for very high-volume runs. Our Cinetec Landis Viking II centerless grinders feature twin-grip mounting and intuitive hardware-independent controls. Viking centerless grinders are known for their small footprint and ease of use. Depending on age, they could also be called Fives Cinetic Viking, Cinetic Landis Viking, or Cincinnati Landis Viking grinders.
Centerless grinders have no need for workholding other than work rest blade. All the operator needs to do is insert the piece between the wheels. In many cases auto loaders are used with Viking grinders as they are set up as infeed grinders rather than thrufeed.
Thus, centerless grinders are the premier choice for quickly finishing simple cylinders. But they can also round out-of-round workpiece blanks and reach roundness, surface finish, and dimensional tolerances better than most other processes.
For answers to your questions or more information on a Viking centerless grinder (or centerless grinders in general) call Liberty at 847-276-2761 or send us an email at email@example.com.
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Process Description: How does it work?
There are three main elements to a centerless grinder: the grinding wheel, the regulating wheel, and the workrest. Various other elements can control, for example, the rotation speed of the wheels or the height of the workrest. The shape of the part to be ground is also a factor, since centerless grinders can't be made to finish very complex parts.
The regulating wheel is usually made of a rubber bonded material and functions to rotate the workpiece so that every part of it is exposed to the grinding wheel. It also helps hold the part in place.
The grinding wheel is the piece that performs the abrasive action on the part. For centerless grinding, the wheel cannot be dressed in as many ways as with other methods, but it can accommodate angled pieces or stepped sections. This wheel rotates more quickly than the regulating wheel, creating friction between the two wheels and therefore grinding the workpiece between them.
The workrest is simply the place where the workpiece sits. This may be one or two blades or a slanted bed that keeps the workpiece at the lowest point and enables much greater roundness.
A Viking centerless grinder can perform two different kinds of centerless grinding:
Through-feed grinding is the most common method. The part automatically moves completely through the two wheels and comes out on the other side.
In-feed grinding allows for some dressing of the grinding wheel. It is used when the operator wants to grind a part that has many different diameters at different points.
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Liberty is always looking for used centerless grinders to buy for inventory. Contact us and let us know what you have for sale. We’ll be happy to give you a free quote.
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Viking grinders can be marketed under many brands, such as Cinetic, Landis, Cincinnati Milacron, and Fives. Click below to see our current inventory and request a free quote. Someone will be in touch very soon.
- Robert H. Todd, Dell K. Allen, Leo Alting, Manufacturing Processes Reference Guide (Industrial Press Inc: 1994), 21.
- Chris Koepfer, "Centerless Grinding: Not Magic!" Modern Machine Shop Magazine, 12/15/2000. http://www.mmsonline.com/articles/centerless-grinding-not-magic.
- "Centerless Grinding," Processes: Machining, eFunda, Inc. http://www.efunda.com/processes/machining/grind_centerless.cfm.
- "Infeed grinding." Total Grinding Solutions. http://www.totalgrindingsolutions.com/grinding-process/infeed-grinding.html.