Type "B" Maximum Speed Chart

Type "B" Mounted Points
(1/8" Mandrel)

 

Shape
No.
D
Wheel
Diameter
inches
T
Wheel
Thickness
inches
1/2"
Overhand
& Thd,
Mdls.
Overhand
1"
1-1/2"
2"
2-1/2"
B 43
1/4
5/16
71,540
41,520
28,780
20,350
13,650
B 44
7/32
3/8
70,170
40,630
28,370
20,410
14,190
B 45
3/16
5/16
75,330
44,730
31,400
22,380
15,090
B 46
1/8
5/16
79,130
47,940
34,020
24,410
16,530
B 47
1/8
5/32
85,900
52,780
36,930
25,400
15,590
B 53
1/4
5/8
54,280
28,120
19,230
14,660
11,810
B 55
1/8
1/4
81,840
49,880
35,180
24,800
16,150
B 63
1/4
3/16
78,440
46,890
32,600
22,630
14,390
B 64
1/4
1/16
85,340
52,250
36,420
24,910
15,130
B 65
1/8
1/8
87,260
53,750
37,520
25,600
15,400
B 70
3/4
1/8
50,930
32,820
22,480
16,470
12,170
B 71
5/8
1/8
61,120
37,000
25,490
18,290
12,820
B 72
1/2
1/8
71,150
41,190
28,500
20,120
13,470
B 73
1/2
1/8
71,150
41,190
28,500
20,120
13,470
B 74
7/32
3/32
84,860
51,860
36,120
24,700
15,010
B 81
3/4
3/16
50,930
27,170
17,600
12,360
8,840
B 82
1/2
1/4
61,280
32,860
21,710
14,870
9,760
B 83
3/8
3/16
72,330
41,960
28,850
20,060
13,000
B 84
5/16
3/16
75,380
44,420
30,730
21,350
13,700
B 92
1/4
1/4
74,990
44,210
30,690
21,490
14,020
B 93
3/16
3/16
81,490
49,350
34,470
23,920
15,080
B 94
11/64
3/32
86,740
53,290
37,110
25,250
15,110
B 95
1/8
3/16
84,550
51,820
36,350
25,200
15,780
B 96
1/8
1/4
81,840
49,880
35,180
24,800
16,150
B 97
1/8
3/8
76,420
46,000
32,850
24,010
16,900
B 98
3/32
1/4
83,550
51,300
36,310
25,630
16,680
B 104
5/16
3/8
63,920
35,270
23,880
16,820
11,480
B 105
1/4
1/4
74,990
44,210
30,690
21,490
14,020
B 106
1/8
7/64
87,930
54,240
37,810
25,700
15,310
B 112
3/8
1/2
51,360
24,840
15,590
10,660
7,450
B113
1/4
lA
74,990
44,210
30,690
21,490
14,020
B 114
7/32
3/8
70,170
40,630
28,370
20,410
14,190
B 115
3/32
1/8
88,600
54,800
38,270
26,050
15,560
B122
3/8
3/8
59,750
31,690
20,890
14,420
9,670
B 123
3/16
3/16
81,490
49,350
34,470
23,920
15,080
B 124
1/8
1/8
87,260
53,750
37,520
25,600
15,400
     
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Mounted Points

 
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