How To Select Your Cosmo Contact Wheel

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Chicago Rubber Company manufactures a full line of rubber contact wheels to support your specific 
grinding and finishing requirements.  Selection of the right wheel is fully as important as the choice of
abrasive belt.  The information on this page will help you to select the right wheel for your application.

  Our grinding experts will be happy to assist you should you need any additional info.

Some guidelines to consider........

HARD WHEELS are used for faster cutting and produce a coarser finish.  For a given material, hard 
wheels remove more stock than soft wheels.

SMALLER WHEEL DIAMETERS are used for faster cutting and a coarser finish.

SERRATED WHEELS permit faster cutting and result in longer belt life.  Glazing is retarded and belt 
life can be extended when serrated wheels are used.

HIGHER SPEEDS produce better finishes, but caution must be exercised since excessive speeds tend 
to harden a soft wheel through centrifugal force.
 
 

(Proper wheel hardness and machine speeds should be adhered to closely.)
 

The Many Faces of the Cosmo Wheel

 
Contact Wheel Selector Chart
      WHEEL FACES
               TYPES
       DUROMETERS 
RECOMMENDED USES
      Plain or serrated
       Super soft sponge
                   15
For fine polishing of wood or 
for extreme contour sanding.
      Plain or serrated
                Soft
                20-30
For polishing, fine finishing, or 
contour polishing of metal and
wood.
      Plain or serrated
          Medium soft
                30-40
For wood or metal work, 
stampings, die casting, 
forgings and contour grinding. 
Plastics if wet.
           Serrated
             Medium
                50-60
General purpose, standard 45 
degree serration for stock
removal and semi finishing.
 Flash grinding on softer 
metals
          Serrated
          Medium hard
                60-70
Standard or scoop tooth 
serrations for stock removal,
fast cutting, flash grinding on 
stainless steel and semi hard
metals.
            Serrated
                Hard
                70-80
Standard and scoop tooth for 
grinding gray iron and hard
metals
            Serrated
            Extra hard
                80-90
Scoop tooth for heavy 
grinding on hardened steel,
hard welds, scale removal
and forgings.

Surface Speeds In Feet Per Minute


 

RPM at arbor or spindle
6" diameter wheel 
8" diameter wheel
10"diameter wheel
12" diameter wheel
14" diameter wheel
16" diameter wheel
18" diameter wheel
800
1256
1675
2094
2513
2932
3351
3770
900
1413
1885
2356
2827
3298
3770
4241
1000
1570
2094
2618
3141
3665
4189
4712
1100
1727
2304
2880
3455
4031
4608
5183
1200
1884
2513
3142
3769
4398
5027
5655
1300
2042
2723
3404
4084
4764
5446
6126
1400
2199
2932
3666
4398
5131
5865
6597
1500
2356
3142
3927
4712
5497
6284
7069
1600
2513
3351
4189
5026
5864
6703
7540
1700
2670
3560
4451
5340
6230
7121
8011
1800
2827
3770
4713
5654
6597
7540
8482
1900
2984
3979
4975
5969
6963
7959
8954
2000
3141
4189
5236
6283
7330
8378
9425
2100
3298
4398
5498
6597
7696
8797
9896
2200
3455
4608
5760
6911
8063
9215
10367
2300
3612
4817
6022
7225
8429
9634
10839
2400
3770
5027
6284
7540
8796
10053
11310
2500
3927
5236
6545
7854
9162
10471
11781
2600
4084
5445
6807
8168
9520
10890
12253
2700
4241
5655
7069
8482
9895
11309
12724
2800
4398
5864
7331
8796
10262
11728
13196
2900
4555
6074
7592
9110
10629
12147
13667
3000
4712
6283
7854
9425
10996
12566
14137
3200
5026
6702
8378
10053
11729
13404
15079
3400
5340
7121
8901
10681
12462
14242
16022
3600
5654
7539
9425
11309
13193
15079
16964
3800
5969
7958
9948
11938
13927
15917
17907
4000
6283
8377
10472
12566
14661
16755
18850

Recommended Speeds For Contact Wheels


 

Diameter of Wheel
Durometer
Normal Operation
Do Not Exceed
6"
20-30
1600 RPM
2000 RPM
6"
30-40
1850
2200
6"
40-50
2000
2400
6"
60-70
2400
3000
6"
70-80
3000
3500
8"
20-30
1500
1850
8"
30-40
1750
2000
8"
40-50
1900
2200
8"
60-70
2100
2500
8"
70-80
2400
3000
10"
20-30
1500
1750
10"
30-40
1750
2000
10"
40-50
1900
2200
10"
60-70
2000
2400
10"
70-80
2200
2600
12"
20-30
1400
1750
12"
30-40
1700
1800
12"
40-50
1800
2000
12"
60-70
2000
2400
12"
70-80
2200
2600
14"
20-30
1300
1750
14"
30-40
1500
1850
14"
40-50
1750
2100
14"
60-70
1900
2200
14"
70-80
2000
2400
16"
20-30
1200
1500
16"
30-40
1500
1750
16"
40-50
1750
1850
16"
60-70
1800
2000
16"
70-80
2000
2200

 

Division Of Contact Rubber Corp.    8635 198th Avenue  P.O. Box 97  Bristol, WI 53104
262-857-2361           (Fax) 262-857-9483