Hubs and Sheaves

QD Sheaves and QD Bushings / Hubs

FEATURES:

  • All sheaves balanced for smooth trouble free operation
  • Sheaves are furnished with standard keyways and set screws; all set screws are 5/16 - 18 knurled
  • Sheaves are phosphorated before painting to prevent rust and increase cohesion between paint and metal
  • The durable, machine gray, baked enamel outer finish offers a long-lasting clean appearance
  • Sheaves are accurately machined from gray cast iron, statically balanced, painted and individually packaged
  • Sheaves and bushings by MasterDriveĀ® Inc are manufactured to meet or exceed the current ASTM/SAE specifications for gray iron casting
sheaves and hubs sheaves and hubs


sheave chart

QD Sheaves for "B" V-Belts - Cast Iron, Heavy Duty, Bushed, 3 and 4 Groove

CATALOG:

O.D.
B
Catalog #
Bush
Type
K
L
Weight (lbs)
3.75
3.40
*3B34SH
SH
E-1
0
1 5/16
3.3
3.95
3.60
*3B36SH
SH
D-1
3/16
1 5/16
3.6
4.15
3.80
*3B38SH
SH
D-1
3/16
1 5/16
3.8
4.35
4.00
3B40SH
SH
A-1
1 1/16
1 5/16
4.2
4.55
4.20
3B42SH
SH
A-1
1 1/16
1 5/16
4.8
4.75
4.40
3B44SH
SH
A-1
1 1/16
1 5/16
5.3
4.95
4.60
3B46SD
SD
A-1
1 1/16
1 13/16
6.0
5.15
4.80
3B48SD
SD
A-1
1 1/16
1 13/16
6.5
5.35
5.00
3B50SD
SD
A-1
1 1/16
1 13/16
7.2
5.55
5.20
3B52SD
SD
A-1
1 1/16
1 13/16
7.8
5.75
5.40
3B54SD
SD
A-1
1 1/16
1 13/16
8.4
5.95
5.60
3B56SD
SD
A-1
1 1/16
1 13/16
9.0
6.15
5.80
3B58SD
SD
A-1
1 1/16
1 13/16
9.7
6.35
6.00
3B60SD
SD
A-1
1 1/16
1 13/16
8.9
6.75
6.40
3B64SD
SD
A-2
1 1/16
1 13/16
9.7
6.95
6.60
3B66SD
SD
A-2
1 1/16
1 13/16
10.0
7.15
6.80
3B68SD
SD
A-2
1 1/16
1 13/16
11.1
7.35
7.00
3B70SK
SK
A-2
11/16
1 15/16
11.4
7.75
7.40
3B74SK
SK
A-2
11/16
1 15/16
12.5
8.35
8.00
3B80SK
SK
A-2
11/16
1 15/16
13.6
8.95
8.60
3B86SK
SK
A-3
11/16
1 15/16
14.6
9.75
9.40
3B94SK
SK
A-3
11/16
1 15/16
16.6
11.35
11.00
3B110SK
SK
A-3
11/16
1 15/16
20.8
12.75
12.40
3B124SK
SK
A-3
11/16
1 15/16
22.5
3.75
3.40
*4B34SD
SD
E-1
5/16
1 13/16
4.3
3.95
3.60
*4B36SD
SD
E-1
5/16
1 13/16
4.8
4.15
3.80
*4B38SD
SD
E-1
5/16
1 13/16
5.2
4.35
4.00
*4B40SD
SD
E-1
0
1 13/16
5.6
4.55
4.20
*4B42SD
SD
E-1
0
1 13/16
6.2
4.75
4.40
4B44SD
SD
E-1
0
1 13/16
6.6
4.95
4.60
4B46SD
SD
A-1
1 5/16
1 13/16
7.2
5.35
5.00
4B50SD
SD
A-1
1 5/16
1 13/16
8.4
5.75
5.40
4B54SD
SD
A-1
1 5/16
1 13/16
9.8
6.35
6.00
4B60SD
SD
A-1
1 5/16
1 13/16
10.9
6.75
6.40
4B64SD
SD
A-2
1 5/16
1 13/16
11.7
6.95
6.60
4B66SD
SD
A-2
1 5/16
1 13/16
12.2
7.15
6.80
4B68SD
SD
A-2
1 5/16
1 13/16
13.0
7.35
7.00
4B70SK
SK
A-2
1
1 15/16
13.7
7.75
7.40
4B74SK
SK
A-2
1
1 15/16
14.8
8.35
8.00
4B80SK
SK
A-2
1
1 15/16
16.3
8.95
8.60
4B86SK
SK
A-3
1
1 15/16
17.7
9.75
9.40
4B94SK
SK
A-3
1
1 15/16
19.7
* = Can only be mounted from one direction.
Note: Cast iron sheaves may not exceed 6500FPM.
This speed does not specify if dynamic balancing (2 plane) is required.

QD Sheaves for "C" V-Belts - Cast Iron, Heavy Duty, Bushed, 3 and 4 Groove

CATALOG:

O.D.
P.D.
Catalog #
Bush
Type
K
L
Weight (lbs)
5.40
5.00
3C50SD
SD
A-1
1 1/4
1 13/16
8.4
5.40
5.00
*3C50SK
SK
A-1
1 1/4
1 13/16
8.4
6.00
5.60
3C56SD
SD
A-1
1 5/16
1 13/16
11.2
6.40
6.00
3C60SF
SF
A-1
7/8
1 15/16
10.1
7.40
7.00
3C70SF
SF
A-1
1 5/16
2 1/16
15.9
7.90
7.50
3C75SF
SF
A-1
1 5/16
2 1/16
18.0
8.40
8.00
3C80E
E
B-1
1 3/4
2 3/4
20.9
8.90
8.50
3C85E
E
B-1
1 3/4
2 3/4
24.5
9.40
9.00
3C90E
E
B-1
1 3/4
2 3/4
27.1
9.90
9.50
3C95E
E
B-1
1 3/4
2 3/4
29.1
10.40
10.00
3C100E
E
B-2
1 3/4
2 3/4
30.1
10.90
10.50
3C105E
E
B-2
1 3/4
2 3/4
30.8
11.40
11.00
3C110E
E
B-3
1 3/4
2 3/4
32.9
12.40
12.00
3C120E
E
B-3
1 3/4
2 3/4
38.4
13.40
13.00
3C130E
E
B-3
1 3/4
2 3/4
42.4
14.40
14.00
3C140E
E
B-3
1 3/4
2 3/4
41.7
5.40
5.00
4C50SD
SD
A-1
1 1/4
1 13/16
10.2
5.40
5.00
*4C50SK
SK
A-1
1 1/4
1 13/16
10.2
6.00
5.60
4C56SD
SD
A-1
1 5/16
1 13/16
13.9
6.40
6.00
4C60SF
SF
A-1
7/8
1 15/16
12.0
7.40
7.00
4C70SF
SF
A-1
1 9/16
2 1/16
18.0
7.90
7.50
4C75SF
SF
A-1
1 9/16
2 1/16
20.5
8.40
8.00
4C80E
E
A-1
2
2 3/4
24.0
8.90
8.50
4C85E
E
A-1
2
2 3/4
27.3
9.40
9.00
4C90E
E
A-1
2
2 3/4
30.7
9.90
9.50
4C95E
E
A-1
2
2 3/4
34.9
10.40
10.00
4C100E
E
A-2
2
2 3/4
38.1
10.90
10.50
4C105E
E
A-2
2
2 3/4
35.8
11.40
11.00
4C110E
E
A-3
2
2 3/4
38.4
* = Small O.D. sheaves used heavily in the oil industry.
Note: Cast iron sheaves may not exceed 6500FPM.
This speed does not specify if dynamic balancing (2 plane) is required.
bushing chart

QD Bushings / Hubs

CATALOG:

Bushing
A
B
D
E
L
Bolt Required
Cap Screw G5, Qty
Cap Screw G5, Size
Set Screw Size
SH
7/16
1.871
2 11/16
7/8
1 5/16
2 1/4
3
1/4 x 1 3/8
1/4
SD
7/16
2.187
3 1/8
1 3/8
1 13/16
2 11/16
3
1/4 x 1 7/8
1/4
SK
9/16
2.812
3 7/8
1 3/8
1 15/16
3 5/16
3
5/16 x 2 3/8
5/16
SF
5/8
3.125
4 5/8
1 7/16
2 1/16
3 7/8
3
3/8 x 2
3/8
E
7/8
3.834
6
1 7/8
2 3/4
5
3
1/2 x 2 3/4
3/8

QD Bushings / Hubs

CATALOG:

Bushing
Bore Range (inches)
Key Seat (inches)
SH
1/2
1/8 x 1/16
SH
5/8, 3/4, 7/8
3/16 x 3/32
SH
15/16, 1, 1 1/8
1/4 x 1/8
SH
1 5/16, 1 3/8
5/16 x 5/32
SH
1 7/16, 1 1/2, 1 5/8
3/8 x 1/16*
SD
5/8, 3/4, 7/8
3/16 x 3/32
SD
15/16, 1, 1 1/8, 1 1/4
1/4 x 1/8
SD
1 1/4**, 1 5/16, 1 3/8
5/16 x 5/32
SD
1 3/8**, 1 7/16, 1 1/2, 1 5/8
3/8 x 3/16
SD
1 3/4
3/8 x 1/8*
SD
1 7/8
1/2 x 1/16*
SD
2
No Key
SK
3/4, 7/8
3/16 x 3/32
SK
1, 1 1/8, 1 1/4
1/4 x 1/8
SK
1 1/4**, 1 5/16, 1 3/8
5/16 x 5/32
SK
1 5/16**, 1 3/8**, 1 7/16, 1 1/2, 1 5/8
3/8 x 3/16
SK
1 3/4
3/8 x 3/16
SK
1 3/4**, 1 7/8, 2, 2 1/8
1/2 x 1/4
SK
2 1/4
1/2 x 1/8*
SK
2 1/4**, 2 5/16, 2 3/8, 2 7/16, 2 1/2
5/8 x 1/16*
SF
1 1/8, 1 1/4
1/4 x 1/8
SF
1 3/8
5/16 x 5/32
SF
1 3/8**, 1 1/2, 1 5/8
3/8 x 3/16
SF
1 3/4
3/8 x 3/16
SF
1 13/16, 1 7/8, 1 15/16, 2, 2 1/16
1/2 x 1/4
SF
2 1/8, 2 1/4
1/2 x 1/4
SF
2 1/4**
5/8 x 5/16
SF
2 1/2
5/8 x 3/16*
SF
2 5/8
5/8 x 1/16*
SF
2 7/8
3/4 x 1/16*
E
1 3/8
5/16 x 5/32
E
1 3/8**, 1 7/16, 1 1/2, 1 5/8
3/8 x 3/16
E
1 3/4
3/8 x 3/16
E
1 7/8, 1 15/16, 2
1/2 x 1/4
E
2 1/8, 2 1/4
1/2 x 1/4
E
2 1/4**, 2 3/8, 2 1/2
5/8 x 5/16
E
2 5/8
5/8 x 5/16
E
2 7/8, 3
3/4 x 1/8*
E
3 3/8
7/8 x 1/16*
* = Shallow Keystock - Keystock supplied with bushing.
** = Oversize Key.
Note: SH, SD, SK, SF, E Bushings are machined out of ductile iron.
A rectangular key is supplied with bushings that have shallow keyseats.
This key will fit the standard depth keyseat on the shaft and the shallow
keyseat on the bushing. All bushings include a set screw over the keyway.


(Hubs & Sheaves by MasterDrive)

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