Rotary Surface Grinders

A rotary surface grinder is a type of precision machine used for machining flat surfaces. It uses a rotating grinding wheel to remove material from the surface of a workpiece, providing a smooth, even finish. Rotary surface grinding is a highly productive process due to the large amount of grinding wheel in contact with the surface area of the workpiece. For each rotation of the rotary table the entire workpiece surface to be ground comes in contact with the grinding wheel. Many applications may require custom options or electromagnetic, mechanical, vacuum, pneumatic or hydraulic work-holding. Rotary surface grinders are essential tools in precision machining operations, offering a balance of high precision and efficient material removal.

Components of a Rotary Surface Grinding Machine

1. Rotating Table (Chuck):
   • The workpiece is placed on a rotating magnetic chuck, or table, that spins horizontally. This ensures uniform material removal and grinding consistency.
2. Grinding Wheel:
   • The grinding wheel is mounted on a vertical spindle above the rotating table. It can vary in material, size and grain depending on the application.
3. Coolant System:
   • Coolant is often used to keep the workpiece and grinding wheel cool during operation, preventing overheating. It can also help flush away debris.
4. Automatic and Manual Controls:
   • Many modern rotary surface grinders come with CNC controls for automatic operation, making it easier to achieve precise tolerances.
   • Manual machines are still common in smaller shops or for specific tasks where hands-on control is preferred.

Types of Rotary Surface Grinders

1. Vertical Spindle Rotary Surface Grinder:
   • The spindle is mounted vertically, and the grinding wheel is positioned directly above the workpiece.
   • Commonly used for flat grinding of larger, heavier workpieces.
2. Horizontal Spindle Rotary Surface Grinder:
   • In this type, the grinding wheel is mounted horizontally, making it suitable for smaller and thinner workpieces.
   • Provides greater flexibility for contour grinding and precision work.

Industrial Uses

Rotary grinding machines are commonly used in industries such as automotive, aerospace, and tool manufacturing, where high precision and surface quality are critical.

• Tool and Die Manufacturing: Used to achieve precision surface finishes and tight tolerances in tool making.
• Automotive Industry: For grinding components like cylinder heads and engine blocks.
• Aerospace: High-precision components requiring smooth finishes are machined using rotary surface grinders.

Pros and Cons of Rotary Surface Grinders

Rotary surface grinders are precise and versatile machines. They can achieve very tight tolerances and fine surface finishes. The rotating table ensures that material is evenly removed across the entire surface. They can be used for a wide range of materials, including metals, ceramics, and plastics.

There are some drawbacks to these machines. The size of the workpiece is limited by machine capacity. Also, they may be expensive to purchase, especially CNC rotary surface grinders. Purchasing a used rotary surface grinder may be a good option if cost is an issue.

Purchase a Used Rotary Surface Grinder

Jordan Craig Machinery often has high-quality, used rotary surface grinders for sale. If you are in the market for one of these machines, view our available inventory. If you don’t see the machine you need, contact us for assistance!

We have many contacts in the industrial machinery world. Whether you need help finding the right machine for your application, or to be connected with financial resources, shippers, installers, or more, we can provide you with reputable names in the field. We believe in transparency and honesty in all our customer relationships. Contact us today!