Shape
No.
D
Wheel
Diameter
inches
T
Wheel
Thickness
inches
1/2"
Overhand
& Thd,
Mdls.
Overhand
1"
1-1/2"
2"
2-1/2"
W 141
3/32
5/32
93,800
56,450
39,000
26,540
16,060
W 142
3/32
1/4
88,900
52,790
36,590
25,360
16,130
W 143
1/8
1/8
93,360
56,110
38,760
26,400
16,020
W 144
1/8
1/4
86,300
50,700
35,010
24,300
15,570
W 145
1/8
3/8
80,390
46,440
32,400
23,340
16,270
W 146
1/8
1/2
75,850
43,550
31,170
23,760
18,350
W 147
5/32
1/32
95,330
57,350
39,280
26,180
15,080
W 148
5/32
1/16
94,800
57,230
39,570
26,890
16,200
W 149
5/32
1/4
83,700
48,610
33,430
23,230
15,020
W 150
3/16
1/16
92,870
55,810
38,660
26,490
16,310
W 151
3/16
1/8
89,050
52,820
36,500
25,150
15,800
W 152
3/16
1/4
81,100
46,520
31,850
22,160
14,460
W 153
3/16
3/8
74,290
41,370
28,350
20,310
14,270
W 154
3/16
1/2
68,860
37,590
26,230
19,840
15,450
W 155
13/64
1/4
79,790
45,480
31,060
21,630
14,180
W 156
1/4
1/32
89,870
53,420
36,880
25,320
15,750
W 157
1/4
1/16
89,000
52,970
36,850
25,700
16,540
W 158
1/4
1/8
84,740
49,530
34,230
23,910
15,580
W 159
1/4
3/16
80,210
45,830
31,360
21,870
14,360
W 160
1/4
1/4
75,890
42,340
28,690
20,030
13,350
W 161
1/4
5/16
71,870
39,150
26,330
18,490
12,640
W 162
1/4
3/8
68,190
36,290
24,300
17,290
12,260
W 165
5/16
1/16
85,140
50,130
35,030
24,900
16,770
W 166
5/16
1/8
80,420
46,240
31,970
22,670
15,360
W 167
5/16
1/4
70,690
38,160
25,540
17,890
12,240
W 168
5/16
5/16
66,220
34,520
22,730
15,910
11,080
W 169
5/16
3/8
62,090
31,220
20,250
14,260
10,260
W 170
5/16
1/2
54,870
25,650
16,340
12,000
9,650
W 171
5/16
3/4
44,720
18,810
12,800
11,770
10,740
W 172
3/8
1/16
81,270
47,290
33,210
24,110
17,000
W 173
3/8
1/8
76,110
42,950
29,700
21,430
15,140
W 174
3/8
1/4
65,480
33,980
22,380
15,760
11,130
W 175
3/8
3/8
55,990
26,140
16,200
11,230
8,250
W 176
3/8
1/2
47,880
19,680
11,390
8,080
6,750

 

Type "W" Mounted Points

 (1/8" Mandrel)

Type "W" Maximum Speed Chart