Hyd-Mech H-14P, Manual

Page: 17 / 90

2.
sECTIon 2 - oPERaTIon InsTRUCTIons
Blade speed adjuster.
This section has been prepared to give the operator the ability to set up the saw for most cutting situations. The saw is
equipped with variable blade speed control and hydraulic feed control, as well as an extensive door chart to guide the
operator to the correct setting of these controls.
blaDE basICs
Technology is rapidly changing all aspects of production machining. Metal cutoff is no exception. The advances made
in the bandsaw blade industry have definitely brought down the cost per cut, despite the three fold higher price of high
technology blades. Variable pitch, bi-metal blades (like the 4/6 or 3/4 bi-metal blade supplied with the M-6/20) last much
longer, cut faster, and more accurately than conventional carbon steel blades. In order to take advantage of the superiority
of bi-metal blades, it is critical to properly “break-in” a new blade. This is accomplished by taking two or three cuts through
solid four or five inch diameter mild steel at an extremely slow feed rate. (It is also advisable to utilize a slow blade speed.)
These two or three slow cuts sufficiently lap (polish) the new blade so that it does not snag the material being cut. Proper
break-in will alleviate blade vibration; improve surface finish, accuracy, and blade life.
After “break-in”, the following six points must be closely monitored to ensure long blade life:
. Proper blade tension should be maintained. (See Section 3, Blade Changing)
2. Generous coolant application is essential with most materials. A high quality and well mixed coolant will extend
blade life, and also increase cutting rate and quality. On those materials where coolant is undesirable for cutting,
a slight coolant flow or periodic oiling of the blade is necessary to prevent the blade from being scored by the
carbide guides.
3. The stock being cut must be securely clamped in the vises.
4. The proper feed force should be chosen.
5. The proper blade speed must be selected.
6. The proper feed rate must be applied.
VaRIablE sPEED ConTRol
Blade speed can be adjusted infinitely between 50 to 350 SFM (Surface Feet/Minute) (15.3 to 107 meters/min). The blade
speed is controlled with dial on the control panel.