Variants in 10" saws on HP combo units (NEW bearing question
Nov 12, 2022 13:48:16 GMT -5
Peruano, hummingbirdstones, and 1 more like this
Post by Peruano on Nov 12, 2022 13:48:16 GMT -5
I'm currently working on a unit that will look like this one (copied from a photo on cigar box lapidary).
I am working with a Highland Park combo machine (supposedly a B 12 model) that has a deviant saw design. Since I have been in possession of another B12 combo unit for several years, I immediately noticed differences in the 10” saw on the new machine relative to my working system.
The design which seems to be the most common saw for these combo units has a tank with vertical sides (not tapered), and the tank is secured to the machine base by 4 tabs protruding from the saw tank’s base. In addition the saw arbor is supported by a separate pillar again attached to the machine base, but protruding into the saw through a u-shaped hole at the top of the tank’s side and not directly bolted to the saw tank.
The deviant saw design has a tank that has sides that taper out as they extend down toward the machine base (frame) and the tank is attached to the machine base by bolts that are hidden under the tank outline and tapped from beneath. Hence there are no protruding tabs like the other model. The arbor of the saw is not supported by the separate pillar, but instead is attached to the side of the tank itself using 4 bolts (spaced at 3.25” intervals front to back, and at 1.75” intervals from upper to lower holes). In short the body of the bearing is held against the saw tank by these bolts.
The consequence of the differences means that the hole for the belt extending down to the motor is in a different place on the two saws; the saw table is nearly if not exactly identical. Their installation on the machine base is markedly distinct due to the arbor design.
My problem stems from lacking the correct bolt-on arbor for the deviant saw tank.
I have two arbors that are marked B12 / 10 that have the correct mounting holes for the deviant tank, but the arbor lengths protruding into the tank are incorrect to place the saw blade in the position to match the slot in the saw table.
One of the arbors I have (apparently new old stock) is labeled 362-HP10TS BALS). It measures 3 7/8” from the face of inner surface of the face plate to the presumed position of the blade.
The second arbor (not having a comparable serial number) but still labeled B12 / 10 measured 1 15/16” for the same measure, but again would not match up the saw blade with the slot in the saw table.
Clearly I have arbors for two other HP 12/10” saws but not the one that I’m trying to restore. Photos of all of this will be below.
Most photos of HP combo machines with saws have the vertical tank design and tabs for mounting the saws on the machine base. However one photo on the Cigar Box Lapidary vintage combo site does depict the flaring tank with hidden mounting sites comparable to my deviant saw – I suspect this is a newer design than the straight sided model.
Does anyone have the correct arbor for my saw? Does anyone have a need for either of the arbors that I have which a not suitable for my application. I suspect they are for HP trim saws not used on combo setups.
If necessary my machine could be completed by mounting a different saw on the end of the machine frame but it would have to be one with the arbor secured to the tank rather than one merely protruding through the tank wall.
I am working with a Highland Park combo machine (supposedly a B 12 model) that has a deviant saw design. Since I have been in possession of another B12 combo unit for several years, I immediately noticed differences in the 10” saw on the new machine relative to my working system.
The design which seems to be the most common saw for these combo units has a tank with vertical sides (not tapered), and the tank is secured to the machine base by 4 tabs protruding from the saw tank’s base. In addition the saw arbor is supported by a separate pillar again attached to the machine base, but protruding into the saw through a u-shaped hole at the top of the tank’s side and not directly bolted to the saw tank.
The deviant saw design has a tank that has sides that taper out as they extend down toward the machine base (frame) and the tank is attached to the machine base by bolts that are hidden under the tank outline and tapped from beneath. Hence there are no protruding tabs like the other model. The arbor of the saw is not supported by the separate pillar, but instead is attached to the side of the tank itself using 4 bolts (spaced at 3.25” intervals front to back, and at 1.75” intervals from upper to lower holes). In short the body of the bearing is held against the saw tank by these bolts.
The consequence of the differences means that the hole for the belt extending down to the motor is in a different place on the two saws; the saw table is nearly if not exactly identical. Their installation on the machine base is markedly distinct due to the arbor design.
My problem stems from lacking the correct bolt-on arbor for the deviant saw tank.
I have two arbors that are marked B12 / 10 that have the correct mounting holes for the deviant tank, but the arbor lengths protruding into the tank are incorrect to place the saw blade in the position to match the slot in the saw table.
One of the arbors I have (apparently new old stock) is labeled 362-HP10TS BALS). It measures 3 7/8” from the face of inner surface of the face plate to the presumed position of the blade.
The second arbor (not having a comparable serial number) but still labeled B12 / 10 measured 1 15/16” for the same measure, but again would not match up the saw blade with the slot in the saw table.
Clearly I have arbors for two other HP 12/10” saws but not the one that I’m trying to restore. Photos of all of this will be below.
Most photos of HP combo machines with saws have the vertical tank design and tabs for mounting the saws on the machine base. However one photo on the Cigar Box Lapidary vintage combo site does depict the flaring tank with hidden mounting sites comparable to my deviant saw – I suspect this is a newer design than the straight sided model.
Does anyone have the correct arbor for my saw? Does anyone have a need for either of the arbors that I have which a not suitable for my application. I suspect they are for HP trim saws not used on combo setups.
If necessary my machine could be completed by mounting a different saw on the end of the machine frame but it would have to be one with the arbor secured to the tank rather than one merely protruding through the tank wall.