- The Holding Block (mounted on strut or stern tube) relates to
cutter mold type (refer to step 1).
- Using the cutter mold type, refer to (Fig. 1) for overall cutter
length.
- Subtract the vessel's strut outside diameter from overall cutter
length. Then ÷ 2 = Holding Block Height.
Figure #1
| MOLD TYPE |
OVERALL LENGTH |
MOLD TYPE |
OVERALL LENGTH |
| A |
4" |
F |
10" |
| B |
5" |
F1 |
11" |
| C |
6" |
F2 |
13 1/2" |
| D |
6 3/4" |
F3 |
15 3/4" |
| E |
7 5/8" |
|
|
4. Using height figure, select Holding Block from chart(Fig.3).
Figure #2
5. Formula to determine holding block:(as seen in Fig. 2)
Cutter overall length ________
Subtract strut diameter - _______
Divide by 2 ÷________
Holding block height = ________
After the holding block height has been determined, it is an easy
matter to choose the holding block mold type from chart (Fig. 3).
Match the height needed to the closest height of holding block
available. Use shims if needed! |
Figure #3
| WEDGE HOLDING BLOCK SIZES AVAILABLE
|
| MOLD TYPE |
HEIGHT |
CLEARANCE HEIGHT
|
WIDTH |
LENGTH |
| #AA |
.900" |
1/8" |
1 1/4" |
3" |
| #1 |
1 1/8" |
5/16" |
1 3/8" |
3 1/4" |
| #2 |
1 1/4" |
1/2" |
1 5/8" |
3 1/2" |
| #3 |
1 1/2" |
1/2" |
1 3/4" |
3 5/8" |
| #3A |
2" |
7/8" |
1 3/4" |
3 11/16"
|
| #4 |
2 1/8" |
9/16" |
2 1/4" |
4 5/8" |
| #5 |
2 1/2" |
3/4" |
2 3/4" |
5 1/2" |
| #5A |
3 1/8" |
3/4" |
2 3/4" |
5 1/2" |
The above are actual diagrams of the wedge holding blocks that are
available. In most cases, they are interchangeable with cutters of
different mold types. They are selected for the best height match to
secure the wedge portion of the stationary cutter.
SHIMS
Shims are available to raise the holding block to attain a height
fit (when needed).
 |
Marine Manufacturing
Inc.