The grinding machine consists of a power driven grinding wheel spinning at the required speed (which is determined by the wheel’s diameter and manufacturer’s rating, usually by a formula) and a bed with a fixture to guide and hold the workpiece. The grinding head can be controlled to travel across a fixed work piece or the workpiece can be moved whilst the grind head stays in a fixed position. Very fine control of the grinding head or tables position is possible using a vernier calibrated hand wheel, or using the features of NC or CNC controls.
Grinding machines remove material from the workpiece by abrasion, that can generate substantial amounts of heat; they therefore incorporate a coolant to cool the workpiece so that it does not overheat and go outside its tolerance.
In very high-precision grinding machines (most cylindrical and surface grinders) the final grinding stages are usually set up so that they remove about 2/10000mm (less than 1/100000 in) per pass - this generates very little heat even with no coolant.
- Belt grinder is a machining method to process metals and other materials, with the aid of coated abrasives. Sanding is the machining of wood; grinding is the common name for machining metals. Belt grinding is a versatile process suitable for all kinds of applications like finishing, deburring, and stock removal.
- Bench grinder usually has two wheels of different grain sizes for roughing and finishing operations and is secured to a workbench. It is used for shaping tool bits or various tools that need to be made or repaired. Bench grinders are manually operated.
- Cylindrical grinder includes the centerless grinder. A cylindrical grinder may have multiple grinding wheels. The workpiece is rotated and fed past the wheel/s to form a cylinder. It is used to make precision rods.
- Disc / Surface grinder includes the wash grinder. A surface grinder has a "head" that is lowered, and the workpiece is moved back and forth past the grinding wheel on a table that has a permanent magnet for use with magnetic stock. Surface grinders can be manually operated or have CNC controls. These grinders are available in horizontal and vertical double end opposed.
- Jig grinder has a variety of uses when finishing jigs, dies, and fixtures. Its primary function is grinding holes and pins. It can also be used for complex surface grinding to finish work started on a mill.
- Tool and Cutter grinder and the D-bit grinder. These usually can perform the minor function of the drill bit grinder, or other specialist tool room grinding operations.
Used Grinders machinery is categorized as:
broach grinders - G4054
centerless grinders - G4306
cylindrical-plain, angle head grinders, NC and CNC grinders - G4765
cylindrical-universal grinders - G4800
cylindrical-universal NC and CNC grinders - G4820
disc, horizontal, double end opposed grinders - G4925
disc, vertical, double end opposed grinders - G4975
drill grinders - G5054
end grinders - G6113
face grinders - G6204
hob grinders - G6556
internal grinders - G6636
spline grinders - G7875
surface, reciproc.table - horizontal spindle - G8080
surface rotary type vertical spindle - G8100
tool and cutter grinders - G8500
Used Grinder Machinery in stock: Myford, Cincinnati, Kellenberger, Toyoda, Gardner, Koyo, Microcut MicroGrind, Barber-Coleman, Mitsui, Gallmeyer & Livingston, Nicco, Chevalier, Cincinnati Heald, Favretto, Blanchard