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Pilot bore sheaves:
AK,2AK
Pilot bore sheaves:
BK,2BK
Pilot bore sheaves:3BK
QD sheaves:AK
QD Sheaves:
2AK,BK
QD Sheaves:
2BK,3BK
QD Sheaves:
3V
QD Sheaves:
5V
QD Sheaves:
8V
QD Sheaves:
A-B
QD Sheaves:
C
QD
Bushings
TB Sheaves:
3V
TB Sheaves:
5V
TB Sheaves:
8V
TB Sheaves:
A-B
TB Sheaves:
C
TB Sheaves:
Tape Bore Size
MTO Pilot
Bore Sheaves
Tolerances &
Diagrams
Adjustable Pilot
Bore Sheaves
Coupling
Dimension

PILOT BORE SHEAVES

BK24 to BK190

For 4L or A
and 5L or B belts.

TYPE 1TYPE 2TYPE 3
SIZEDIAMETER
TYPE
DIMENSIONSSTOCK BORES
OD
PD
 
 
F

L

P

C
'A' 'B'
BK24
BK25
BK26
BK27
BK28
2.40
2.50
2.60
2.70
2.95
1.80
1.90
2.00
2.10
2.20
2.20
2.30
2.40
2.50
2.60
1
1
1
2
2
13/16
13/16
13/16
13/16
13/16
1 1/16
1 1/16
1 1/16
1 1/16
1 1/16
13/32
13/32
13/32
13/32
13/32
5/32
5/32
5/32
5/32
5/32
1/2, 5/8, 3/4
1/2, 5/8, 3/4, 7/8
1/2, 5/8, 3/4, 7/8
1/2, 5/8, 3/4, 7/8
1/2, 5/8, 3/4, 7/8
BK30
BK32
BK34
BK36
BK40
3.15
3.35
3.55
3.75
3.95
2.40
2.60
2.80
3.00
3.20
2.80
3.00
3.20
3.40
3.60
2
2
2
2
2
13/16
13/16
7/8
7/8
7/8
1 1/16
1 1/16
1 5/32
1 5/32
1 5/32
13/32
13/32
13/32
13/32
13/32
5/32
5/32
1/8
1/8
1/8
1/2, 5/8, 3/4, 7/8
1/2, 5/8, 3/4, 7/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
BK45
BK47
BK50
BK52
BK55
4.25
4.45
4.75
4.95
5.25
3.50
3.70
4.00
4.20
4.50
3.90
4.10
4.40
4.60
4.90
2
2
3
3
3
7/8
7/8
7/8
7/8
7/8
1 5/32
1 5/32
1 5/32
1 5/32
1 5/32
13/32
13/32
13/32
13/32
13/32
1/8
1/8
1/8
1/8
1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 15/16, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8, 1 3/16
BK57
BK60
BK62

BK65
BK67
5.45
5.75
5.95

6.25
6.45
4.70
5.00
5.20

5.50
5.70
5.10
5.40
5.60

5.90
6.10
3
3
3

3
3
7/8
7/8
7/8

7/8
7/8
1 5/32
1 5/32
1 5/32

1 5/32
1 5/32
13/32
13/32
13/32

13/32
13/32
1/8
1/8
1/8

1/8
1/8
5/8, 3/4, 7/8, 15/16, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8, 1 3/16
1/2, 5/8, 3/4, 7/8, 15/16, 1, 1 1/8,
1 3/16
5/8, 3/4, 1, 1 1/8
5/8, 3/4, 1, 1 1/8
BK70

BK72
BK75
BK77
BK80
6.75

6.95
7.25
7.45
7.75
6.00

6.20
6.50
6.70
7.00
6.40

6.60
6.90
7.10
7.40
3

3
3
3
3
7/8

7/8
7/8
7/8
7/8
1 15/32

1 15/32
1 15/32
1 15/32
1 15/32
21/32

21/32
21/32
21/32
21/32
1/16

1/16
1/16
1/16
1/16
5/8, 3/4, 15/16, 1, 1 1/8,
1 3/16, 1 7/16
3/4, 1, 1 1/8, 1 3/8
3/4, 1, 1 1/8, 1 3/8
3/4, 1, 1 1/8, 1 3/8
5/8, 3/4, 7/8, 1, 1 1/8, 1 3/16,
1 1/4, 1 3/8, 1 7/16
BK85
BK90
 
BK95
BK100

BK105
8.25
8.75
 
9.25
9.75

10.25
7.50
8.00

8.50
9.00

9.50
7.90
8.40

8.90
9.40

9.90
3
3

3
3

3
7/8
7/8

7/8
7/8

7/8
1 15/32
1 15/32

1 15/32
1 15/32

1 15/32
21/32
21/32

21/32
21/32

21/32
1/16
1/16

1/16
1/16

1/16
3/4, 1, 1 1/8, 1 3/8, 1 7/16
3/4, 7/8, 15/16, 1, 1 1/8, 1 3/16,
1 3/8, 1 7/16
3/4, 1, 1 1/8, 1 3/8, 1 7/16
3/4, 7/8, 15/16, 1, 1 1/8, 1 3/16,
1 1/4, 1 3/8, 1 7/16
1, 1 3/8, 1 7/16
BK110
BK115
BK120
BK130
BK140
10.75
11.25
11.75
12.75
13.75
10.00
10.50
11.00
12.00
13.00
10.40
10.90
11.40
12.40
13.40
3
3
3
3
3
7/8
7/8
7/8
7/8
7/8
1 15/32
1 15/32
1 15/32
1 15/32
1 15/32
21/32
21/32
21/32
21/32
21/32
1/16
1/16
1/16
1/16
1/16
3/4, 1, 1 1/8, 1 3/16, 1 3/8, 1 7/16
1, 1 3/8, 1 7/16
3/4, 1, 1 3/16, 1 3/8, 1 7/16
3/4, 1, 1 1/8, 1 3/16, 1 1/4, 1 7/16
3/4, 1, 1 3/16, 1 7/16
BK160
BK190
15.75
18.75
15.00
18.00
15.40
18.40
3
3
7/8
7/8
1 15/32
1 15/32
21/32
21/32
1/16
1/16
1, 1 1/8, 1 3/16, 1 1/4, 1 7/16
1, 1 3/16, 1 1/4, 1 7/16

 
PILOT BORE SHEAVES
 
2BK25 to
2BK190

For 4L or A
and 5L or B belts.

TYPE 1TYPE 2TYPE 3
   
SIZEDIAMETERTYPEDIMENSIONSSTOCK BORES
0DPDFLPC
'A''B'
2BK25
2BK27
2BK28
2BK30
2BK32
2.50
2.70
2.95
3.15
3.35
1.90
2.10
2.20
2.40
2.60
2.30
2.50
2.60
2.80
3.00
1
1
1
1
1
1 3/4
1 3/4
1 3/4
1 3/4
1 3/4
1 31/32
1 31/32
1 31/32
1 31/32
1 31/32
15/32
15/32
15/32
15/32
15/32
1/4
1/4
1/4
1/4
1/4
1/2, 5/8, 3/4, 7/8
1/2, 5/8, 3/4, 7/8, 1
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
1/2, 5/8, 3/4, 7/8, 1, 1 1/8
5/8, 7/8, 1, 1 1/8
2BK34
2BK36
2BK40
2BK45
2BK47
3.55
3.75
3.95
4.25
4.45
2.80
3.00
3.20
3.50
3.70
3.20
3.40
3.60
3.90
4.10
1
1
2
2
2
1 3/4
1 3/4
1 3/4
1 3/4
1 3/4
1 31/32
1 31/32
1 15/32
1 15/32
1 15/32
15/32
15/32
15/32
15/32
15/32
1/4
1/4
3/4
3/4
3/4
5/8, 3/4, 7/8, 1, 1 1/8
3/4, 7/8, 1, 1 1/8, 1 3/8
5/8, 3/4, 7/8, 1, 1 1/8
1, 1 1/8, 1 3/8
7/8, 1, 1 1/8
2BK50
2BK52
2BK55
2BK57
2BK60
4.75
4.95
5.25
5.45
5.75
4.00
4.20
4.50
4.70
5.00
4.40
4.60
4.90
5.10
5.40
2
2
2
2
3
1 3/4
1 3/4
1 3/4
1 3/4
1 3/4
1 15/32
1 15/32
1 15/32
1 15/32
1 15/32
15/32
15/32
15/32
15/32
15/32
3/4
3/4
3/4
3/4
3/4
3/4, 1, 1 1/8, 1 3/8
7/8, 1, 1 1/8, 1 3/8
1 1/8, 1 3/8
1, 1 1/8, 1 3/8
3/4, 7/8, 1, 1 1/8, 1 3/8
2BK62
2BK65
2BK67
2BK70
2BK80
5.95
6.25
6.45
6.75
7.75
5.20
5.50
5.70
6.00
7.00
5.60
5.90
6.10
6.40
7.40
3
3
3
3
3
1 3/4
1 3/4
1 3/4
1 3/4
1 3/4
1 15/32
1 15/32
1 15/32
1 19/32
1 19/32
15/32
15/32
15/32
11/32
11/32
3/4
3/4
3/4
1/2
1/2
1, 1 1/8, 1 3/8
1, 1 1/8, 1 3/8
1, 1 1/8, 1 3/8
3/4, 1, 1 1/8, 1 3/16, 1 3/8, 1 7/16
3/4, 1, 1 1/8, 1 3/16, 1 3/8, 1 7/16
2BK90
2BK100
2BK110
2BK120
2BK130
8.75
9.75
10.75
11.75
12.75
8.00
9.00
10.00
11.00
12.00
8.40
9.40
10.40
11.40
12.40
3
3
3
3
3
1 3/4
1 3/4
1 3/4
1 3/4
1 3/4
1 19/32
1 19/32
1 19/32
1 19/32
1 19/32
11/32
11/32
11/32
11/32
11/32
1/2
1/2
1/2
1/2
1/2
3/4, 1, 1 1/8, 1 3/16, 1 3/8, 1 7/16
3/4, 1, 1 3/16, 1 3/8, 1 7/16
1, 1 3/16, 1 7/16
1, 1 3/16, 1 7/16
1, 1 3/16, 1 7/16
2BK140
2BK160
2BK190
13.75
15.75
18.75
13.00
15.00
18.00
13.40
15.40
18.40
3
3
3
1 3/4
1 3/4
1 3/4
1 19/32
1 19/32
1 19/32
11/32
11/32
11/32
1/2
1/2
1/2
1, 1 3/16, 1 7/16
1, 1 3/16, 1 7/16
1 3/16, 1 7/16

 
Bore Range
Keyseat
1/2
None
5/8 to 7/8
3/16*3/32
15/16 to 1 1/4
1/4*1/8
1 7/16
3/8*3/16

 

Pilot bore sheaves:
AK,2AK
Pilot bore sheaves:
BK,2BK
Pilot bore sheaves:3BK
QD sheaves:AK
QD Sheaves:
2AK,BK
QD Sheaves:
2BK,3BK
QD Sheaves:
3V
QD Sheaves:
5V
QD Sheaves:
8V
QD Sheaves:
A-B
QD Sheaves:
C
QD
Bushings
TB Sheaves:
3V
TB Sheaves:
5V
TB Sheaves:
8V
TB Sheaves:
A-B
TB Sheaves:
C
TB Sheaves:
Tape Bore Size
MTO Pilot
Bore Sheaves
Tolerances &
Diagrams
Adjustable Pilot
Bore Sheaves
Coupling
Dimension

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