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Clover® Lapping Compounds

Can

Uses     |     Size and Grit Selection  

 
 


CLOVER LAPPING AND GRINDING COMPOUNDS are abrasive pastes for the cutting, smoothing and finishing of metal surfaces, and for the precision mating of metal parts. For over 100 years Clover Compounds have helped mechanics, tool and die makers, and machine builders create precision, silky-smooth fits in machine parts, valve seats and gear teeth.

Clover Compounds are formulated from silicon carbide abrasives. These compounds are classified by grit size; from very coarse to extremely fine. They are available in grease based formulations.

Clover Compounds supplement other metal removal techniques such as grinding, milling, boring and EDM machining. Where these techniques alone cannot achieve the required finishing, Clover Compounds are used to:

  • Produce an ultra flat surface as in the lapping or gauges, valve seats, spacers and mechanical seal faces.

  • Smooth out surfaces as in the lapping of tool marks from machine ways, bearing races and shaft surfaces.

  • Achieve precise dimensions while maintaining smooth surfaces as in finishing gauges, tools and dies.

  • Achieve perfect mating of metal parts as in lapping in of automotive and industrial valves, running-in gears, and sharpening of shear-type cutters.

  • Clean surfaces without changing the topography of the surfaces as in cleaning mold cavities and die surfaces.

  • Remove metal or material too hard to remove in other ways as in finishing hardened tool steel or stellite valve seats.

 

 
 
Grade and Grit Selector Guide

Part Number

( 1 lb. can)

GRIT Descriptions Average Particle Sizes of
Abrasive Grains
1/1000
inches
Microns
(0.001 mm)
CL.7A 1200 EXTREMELY FINE
Polishing, High Precision Lapping
0.12 3

CL.6A *
(discontinued)

1000* 0.20 5
CL.5A 800 0.38 9
CL.4A 600 VERY FINE
For fine Polishing and Lapping
0.56 14
CL.3A *
(discontinued)
500* 0.68 17
CL.2A 400 0.90 23
CL.1A 320 FINE
For Finishing, Valve Lapping, Bearings, Dies and Gauges
1.28 33
CL.A 280 1.75 44
CL.B 240 MEDIUM FINE
For Cylinder Lapping
2.48 63
CL.C 220 2.6 66
CL.D 180 MEDIUM
General Purpose for controlled Metal Removal
3.4 86
CL.NC *
(discontinued)
150* 4.8 122
CL.E 120 COARSE
For the Initial "Cut"
Fast Removal of Metal
5.6 142
CL.F 100 6.8 173
CL.G 80 15 267
CL.J *
(discontinued)
54* VERY COARSE
For Fastest Metal Removal
18 463
* discontinued grits ,no longer available


The Abrasives:

Clover compounds are available with the following abrasive grains and in a range of grit sizes. See the chart for availability of grit by size.

Silicon Carbide
The preferred abrasive for fast cutting of all but the hardest and toughest metals. It will produce a smooth flat surface but not a polished one.

 



The Carriers:

Grease Mix
The most widely used carrier for Clover abrasives. It retains its texture and lubrication properties during extended lapping and leaves a rust- preventing film on lapped surfaces.

 

link to clover price list

link to barrel type lapping tools

link to boron carbide lapping compounds

link to non imbedding lapping compounds

link to index page

May 2022, October  2016, June 2014 ,Nov 2012, March 2012 , November 2009 CSS, Apr 2009, June1999

The descriptions, illustrations, specifications, dimensions, and part numbers are subject to change without notice.

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