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Hydro-sheave couplings are mounted to the motor shaft end and provide minimal overhung loads for parallel (belt-driven) shaft applications. The smaller sizes (7-12.4) are installed very quickly and easily utilizing a slotted collet in which no drilling or tapping is required. The slotted collet is finished bored to fit standard NEMA B motor shaft dimensions. The larger sizes (15-24) are installed with a center locating bolt that does require drilling and tapping to ensure proper mounting. The Model HSD Fluid Coupling consists of a basic fluid coupling, input and output group, and a standard customer supplied QD type sheave. The sheave is mount ed on a coupling that has been installed on the end of a driveshaft.

Specifications

Size

21

Bore Size

3-7/8 in

Dimension A

24.409 in

Dimension B

8.071 in

Dimension C

N/A

Dimension D

3.875 in

Dimension Q

in
1-1/4 7 UNC

Dimension R

N/A

Dimension S

in
7/8 9 UNC

Dimension T

10.236 in

Dimension U

N/A

Dimension V

4.314 in

Dimension X

N/A

Dimension J

8.500 in

Dimension W

1.000 in

Dimension B 1

4.330 in

Maximum C

21.456 in

Dimension C 1

24.408 in

Dimension E

11.811 in

Dimension F

6.500 in

Dimension G

7.875 in

Nr. H

4

H Diameter

3/4 10 UNC

Dimension I

15.748 in

Dimension K

1.575 in

Dimension L

7.085 in

Dimension M

9.00 in

Dimension N

9.842 in

Q.D. Hub Size

M

Weight (Less Oil)

N/A

Key

N/A

Maximum Speed

N/A

Center Capscrew Torque

lb ft

Casting on Housing

N/A

Less Oil Weight

270 lb

Maximum Oil Volume

5.02 gal

Tolerance

Dimension D
up to 2 inch: +0.001/-0.000from 2 to 4 inch: +0.0015/-0.000
Dimension W
up to 0.500 inch: +0.002/-0.000from 0.625 to 1 inch: +0.003/-0.000

Manufacturer

Wichita Clutch

Notes

Maximum Bore