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The new MIKRON PLUS range of Centreless wheels combine broad versatility and high performance to give marked productivity gains over others.

Stock Availability Table

Troubleshooting Guide

Also See(pdf) : Centreless Wheels

	Typical Applications
	Bar grinding Bearing Race OD ring grinding Auto part grinding e.g. piston pins, shock absorber tubes & rods, engine valve stems, dowell pins, etc.

MIKRON PLUS— A premium product without a premium price tag.
	Features	Benefits
	Versatile abrasive A capable of grinding different materials	Lower down time due to lesser wheel changes

	Advanced VCNM bond	Freer cutting, better form retention
		Lower dressing frequency
		Equally good on hard and soft materials
		Maintain effective wheel-work contact width & avoids shifting of the cut

"New MIKRON (Super Edge, Super Grinding) Wheels not only resulted in higher productivity, but I also saved on my dresser costs."
--- Foreman, Gudgeon Pin Manufacturer

Wheel Dressing

Dressing of the wheel is to be done only when strictly required and the dressing depth should be just adequate to clean the wheel face and maintain its sharpness.
face.

Workrest Blade
In centreless grinding, wheel performance and job quality is largely influenced by correct workrest blade setting, its angle and hardness. l Ensure no slippage takes place while driving regulating wheels to avoid flat spots.
See our diamond tool section for more details.

Relative Jobs Between Dressings

Mikron Competitor

Abrasive		Grit	Grade	Bond	Dressings Tool

More Durable	A	36 (Coarse)	I (Soft)	VBE	Standard Tool
	19A			VCNM	Standard Tool
	38A			VH	Standard Tool
More Friable		120 (Fine)	O (Hard)		Standard Tool

How To Use Spec Check:

Abrasive: Select abrasive type based on required performance , stock removal rate and material type.

Bond: Select the appropriate bond based on the abrasive selected, and the contact area.

Grit Size: Select the grit size depending on finish required and stock removal rate needed.

Grade: Selection based on bond selected and contact area.

Abrasive:

Bond:

A: Tough, blocky abrasive; for all general purpose applications.

VCNM: Improved Norton bond; good corner retention properties;available in standard stock with versatile Aluminium Oxide abrasive.

19A: Combination abrasive for cool cutting characteristics.

VBE: General purpose, for narrow/medium contact area, cool cutting, less burn, high chip clearance. To be used with 38A.

38A: For grinding 'Heat Sensitive' alloys at high removal rates.

VH: Superior corner retention properties, engineered for form grinding centreless operations. Grinds with low forces and results in improved part roundness.

Grit:

46: Typically for roughing and general purpose; finish rougher than 0.8 mRa.

60: Typically for commercial finish; 0.68 mRa or better.

80: Fine finish; 0.4 mRa or better, corner/form applications.

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Troubleshooting Guide

Problem	Possible Causes	Suggested Correction

Poor surface finish or quality of grind	– Wheel too hard	– Use softer grade
	– Wheel too coarse	– Use coarser grit
	– Dirty coolant	– Filter coolant or replace coolant
	– Poor wheel dressing	– Increase dressing frequency or decrease dressing traverse rate

Poor rounding/lobing	– Centre height incorrect	– Increase centre height
	– Jobs excessive out of round before grinding	– Machine for reducing out of round before grinding

Chatter	– Centre height too high	– Lower job centre height
	– Worn out spindle bearings	– Replace bearings
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Mikron Centreless Grinding Wheels — Stock Availability Table
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