Grinding
Grinding is a method to obtain a certain surface or fine tolerances.
When grinding, a grinding stone or grinding wheel is rubbed against a component. This changes the component's surface, either to increase tolerances or to achieve nice surfaces or reduced friction.
Grinding is also used for cutting purposes, especially for shallow cuts when milling is inappropriate. Even though grinding is commonly used to improve surfaces, it is suitable for mass production when machining large amounts of components or materials.
There are several methods of grinding and grinding machines. The two main categories of grinding are surface grinding and cylindrical grinding, of which surface grinding is the most common one. Then a rotating grinding wheel is used to acheive flat surfaces. The wheel can be have different shapes depending on what kind of component is grinded. When the wheel rubs the workpiece a flat surface is created. On the other hand, cylindrical grinding uses a round-shaped grinding stone to grind cylindrical shapes with high precision. Cylindrical grinding, also known as center-type grinding, is usually external but internal grinding also occur.
There are several subcategories, for example centerless grinding. Centerless grinding machines have no centres or chucks, instead components are supported by a blade and a regulating wheel, which controls the components rotation.
Each grinding machine has at least one grinding wheel or grinding stone, which consists of an abrasive and a bonding agent. The composition depends on the material of the component and the purpose of grinding.
Usually every workshop has grinding machines or co-operations with grinders. If a grinding job is complex or a large, there are specialized grinding workshops.
Picture: Central Grinding Services Ltd
Latest RFQs
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Machining-Grinding
Description: This buyer is looking to find a long term supplier to furnish all their Grinding requirements. They are a Global supplier of Diamond Tooling who outsource small batch free issue components to the annual value of approx £10,000 plus. There is an order to place with similar parts to follow.
Material - Free issue turned part, EN 56 AM
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Machining-Grinding
Description: This Buyer from a major company requires a supplier to carry out grinding on a regular basis.
They require a circular end to be applied to free issue block.
The material is D3 Tool Steel and the component is for Machine Tools.
Approx block sizes ae 38mm, 48mm, 58mm & 68mm x 38mm
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Machining-Grinding
Description: Precision cylindrical grinding to make housings for a company who spends £20,000 p/a on machined parts.
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Machining-Grinding
Description: Looking for companies to centreless grind the outside dia of pistons.
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Machining-Grinding
Description: Re-grinding of Plungers etc, used in the manufacture of Packaging equipment.
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Machining-Grinding
Description: Large Surface & Cylindrical Grinding.
Surface grind both ends.
External grind
Ø274,949/274,892
Ø269,944/269,892
Internal grind
Ø47,89/47,94
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Machining-Grinding
Description: Bush unit to attached drawing
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Machining-Grinding
Description: Stainless 440C (we supply the material) blanks, 12.5mm diameter X 3mm thick, quantity 40 off. Tol + / - 0.1mm. Note * must have superfine finish on O/D and 1 face = N2 OR o.2 surface roughness
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Machining-Grinding
Description: Grinding of pistons used for conveyors
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Machining-Grinding
Description: Grinding of Sleeves used for the use of conveyors.
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Machining-Grinding
Description: Internal finish grinding of a cage.
Free issue
Material - Outer casing is 718 Inconnel and the inner cage is Tungsten Carbide
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Machining-Grinding
Description: Surface grind 6 off 1800mm long x 1250mm wide Steel Plate (BSEN 10025 S275)
Surface Grind 2 off 2200mm long x 1250mm wide Steel Plate (BSEN 10025 S275)
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Machining-Grinding
Description: Internal & cylindrical grinding of Bodies & Stems
Stem - Nickel Alloy 725.
Body - Super Duplex Stainless Steel
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Machining-Grinding
Description: Grinding of the Hexagon and shaft of bolts.
Material EN24
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