Cast lron Sheaves
BK |
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Single
Groove Sheaves for "4L" or "A" Belts |
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"3L" Belts may be used with These Sheaves as lndicated
in Table Below |
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Table No.1 |
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Stock Sizes—Finished
Bore |
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part No. |
DIAMETERS |
Type |
STOCK
BORES
MARKED
"X" |
DIMENSIONS |
Wt.
lbs. |
Outside |
Datum
"A" |
Datum
"B" |
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1/2" |
5/8" |
3/4" |
7/8" |
15/16" |
1" |
1 1/8" |
1 3/16" |
1 1/4" |
1 3/8" |
1 7/16" |
F |
L |
P |
C |
▲BK24 |
2.40" |
1.80" |
2.20" |
1 |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
— |
13/16" |
1 1/16" |
13/32" |
5/32" |
.4 |
▲BK25 |
2.50 |
1.90 |
2.30 |
1 |
× |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
13/16 |
1 1/16 |
13/32 |
5/32 |
.5 |
▲BK26 |
2.60 |
2.00 |
2.40 |
1 |
× |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
13/16 |
1 1/16 |
13/32 |
5/32 |
.6 |
▲BK27 |
2.70 |
2.10 |
2.50 |
2 |
× |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
13/16 |
1 1/16 |
13/32 |
5/32 |
.6 |
▲BK28 |
2.95 |
2.20 |
2.60 |
2 |
× |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
13/16 |
1 1/16 |
13/32 |
5/32 |
.8 |
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▲BK30 |
3.15 |
2.40 |
2.80 |
2 |
× |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
13/16 |
1 1/16 |
13/32 |
5/32 |
.8 |
▲BK32 |
3.35 |
2.60 |
3.00 |
2 |
× |
× |
× |
× |
— |
— |
— |
— |
— |
— |
— |
13/16 |
1 1/16 |
13/32 |
5/32 |
.8 |
BK34 |
3.55 |
2.80 |
3.20 |
2 |
× |
× |
× |
× |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
1.3 |
BK36 |
3.75 |
3.00 |
3.40 |
2 |
× |
× |
× |
× |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
1.5 |
BK40 |
3.95 |
3.20 |
3.60 |
2 |
× |
× |
× |
× |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
1.5 |
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BK45 |
4.25 |
3.50 |
3.90 |
2 |
× |
× |
× |
× |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
1.8 |
BK47 |
4.45 |
3.70 |
4.1 |
2 |
× |
× |
× |
× |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
1.9 |
BK50 |
4.75 |
4.00 |
4.4 |
3 |
× |
× |
× |
× |
× |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.0 |
BK52 |
4.95 |
4.20 |
4.6 |
3 |
× |
× |
× |
× |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.0 |
BK55 |
5.25 |
4.50 |
4.9 |
3 |
× |
× |
× |
× |
— |
× |
× |
× |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.2 |
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BK57 |
5.45 |
4.7 |
5.1 |
3 |
— |
× |
× |
× |
× |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.3 |
BK60 |
5.75 |
5.00 |
5.4 |
3 |
× |
× |
× |
× |
— |
× |
× |
× |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.3 |
BK62 |
5.95 |
5.20 |
5.6 |
3 |
× |
× |
× |
× |
× |
× |
× |
× |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.4 |
BK65 |
6.25 |
5.50 |
5.9 |
3 |
— |
× |
× |
— |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.7 |
BK67 |
6.45 |
5.70 |
6.1 |
3 |
— |
× |
× |
— |
— |
× |
× |
— |
— |
— |
— |
7/8 |
1 5/32 |
13/32 |
1/8 |
2.8 |
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BK70 |
6.75 |
6 |
6.4 |
3 |
— |
× |
× |
— |
× |
× |
× |
× |
— |
— |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
3.3 |
BK72 |
6.95 |
6.20 |
6.6 |
3 |
— |
— |
× |
— |
— |
× |
× |
— |
— |
× |
— |
7/8 |
1 15/32 |
21/32 |
1/16 |
3.9 |
BK75 |
7.25 |
6.50 |
6.9 |
3 |
— |
— |
× |
— |
— |
× |
× |
— |
— |
× |
— |
7/8 |
1 15/32 |
21/32 |
1/16 |
3.9 |
BK77 |
7.45 |
6.70 |
7.1 |
3 |
— |
— |
× |
— |
— |
× |
× |
— |
— |
× |
— |
7/8 |
1 15/32 |
21/32 |
1/16 |
4.1 |
BK80 |
7.75 |
7.00 |
7.4 |
3 |
— |
× |
× |
× |
— |
× |
× |
× |
× |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
4.4 |
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BK85 |
8.25 |
7.5 |
7.9 |
3 |
— |
— |
× |
— |
— |
× |
× |
— |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
5.0 |
BK90 |
8.75 |
8.00 |
8.4 |
3 |
— |
— |
× |
× |
× |
× |
× |
× |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
5.0 |
BK95 |
9.25 |
8.50 |
8.9 |
3 |
— |
— |
× |
— |
— |
× |
× |
— |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
5.4 |
BK100 |
9.75 |
9.00 |
9.4 |
3 |
— |
— |
× |
× |
× |
× |
× |
× |
× |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
5.6 |
BK105 |
10.25 |
9.50 |
9.9 |
3 |
— |
— |
— |
— |
— |
× |
— |
— |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
5.8 |
BK110 |
10.75 |
10.00 |
10.4 |
3 |
— |
— |
× |
— |
— |
× |
× |
× |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
6.4 |
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BK115 |
11.25 |
10.50 |
10.9 |
3 |
— |
— |
— |
— |
— |
× |
— |
— |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
6.9 |
BK120 |
11.75 |
11.00 |
11.4 |
3 |
— |
— |
× |
— |
— |
× |
— |
× |
— |
× |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
7.4 |
BK130 |
12.75 |
12.00 |
12.4 |
3 |
— |
— |
× |
— |
— |
× |
× |
× |
× |
— |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
8.4 |
BK140 |
13.75 |
13.00 |
13.4 |
3 |
— |
— |
× |
— |
— |
× |
— |
× |
— |
— |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
9.4 |
BK160 |
15.75 |
15.00 |
15.4 |
3 |
— |
— |
— |
— |
— |
× |
× |
× |
× |
— |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
11.4 |
BK190 |
18.75 |
18 |
18.4 |
3 |
— |
— |
— |
— |
— |
× |
— |
× |
× |
— |
× |
7/8 |
1 15/32 |
21/32 |
1/16 |
13.4 |
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★P=13/32” and C=1/8" for
1"” Bore and Smaller |
For
bores not usually encountered,use FHP Bushing shown on Page A-6. |
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▲NOTE—DO NOT USE THESE "BK" SHEVES WITH "B"
GRIPNOTCH BELT RATINGS. |
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◆ ◆ |
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HOLLOW HEAD |
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SETSCREWS |
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◆ ◆ |
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STATICALLY |
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BALANCED |
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◆ ◆ |
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Standard Keyseats |
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Table No.2 |
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Bore Range |
Keyseat |
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1/2" |
None |
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5/8 to 7/8 |
3/16'×3/32' |
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15/16 to 1 1/4 |
1/4×1/8 |
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1 7/16 |
3/8×3/16 |
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