Guide for Replacing Northrock, Haskins-Strand & FMA Drive Shaft and Casing

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Drive Shaft and Casing Replacement (Northrock, Haskins-Strand & FMA)

Drive shafts and casings differ by brand and model.

First, determine which brand you have by looking at the hand-piece, not the motor. The same motor is used by all three.

Then select the model.

Which Brand?

____

Northrock

Photo of Northrock driveshaft

Haskins-Strand

Food Machinery of America (FMA)

These use the same parts. Older models had smooth plastic handles.

Photo of Haskins Strand driveshaft

Which Model?

Northrock
drive shafts are compressed into a square at both ends. They look like this but differ in diameter:

Photo of Northrock shaft

Northrock Standard: End is 1/4" diameter. Part # 250CC4
Northrock Heavy Duty: End is 5/16" diameter. Part # 250CD4
Northrock Rubber Casing for both: Part # 275BH4

Haskins-Strand and FMA

H-S & FMA Standard Duty

Photo of Haskins-Strand shaft

The Standard model has this fluted fitting at both ends which fits into the motor and the hand-piece.

H-S & FMA Standard Part # HS250BA4
The Rubber Casing is Part # 275BH4, the same as the Northrock.

H-S & FMA Heavy Duty

The Heavy Duty drive shaft has one end that screws into the motor (below) and a fluted end (like the standard style above) that goes into the hand-piece on the other.

Photo of heavy duty driveshaft

H-S & FMA Heavy Duty Part # HS250BB4

HD Rubber Casing Part # 275BJ4

REPLACING THE DRIVE SHAFT

1. Remove the 2 bolts that connect the casing to the motor. Remove the drive shaft from the casing.

2. Inspect the casing. If it is damaged in any way, holes, tears or kinks, it should be replaced.

3. Next, check to see that the hand-piece is securely fitted to the casing. If loose at all, screw it down onto the casing as far as it will go by hand. Then tighten the nut with a wrench.

4. If all parts are OK, lubricate the new shaft with grease and then put it into the casing. Make sure it is in all the way (turning the cable end should turn the scaling spindle). Reattach the casing to the motor with the 2 bolts. Test. You are done.

REPLACING THE CASING

1. If the casing is damaged in any way, it should be replaced. To replace the casing, remove the 2 bolts that connect the casing to the motor. Remove the drive shaft from the casing.

2. Next, loosen the nut on the hand-piece and unscrew it from the casing.

3. Install the new casing. For the hand-piece, screw the nut up as far as it will go, then screw the casing on as far as it will go by hand. Tighten the nut with a wrench. No threads should be showing.

4. Lubricate the new shaft with grease and then put it into the casing. We recommend the Northrock lubricant or this Food Grade Super Lube Grease available from Grainger .

Make sure it is in all the way (turning the cable end should turn the scaling spindle). Reattach the casing to the motor with the 2 bolts. Test. You are done.