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MQ SP2 SLAB SAW — PARTS & OPERATION MANUAL — REV. #7 (09/08/06) — PAGE 17
MQ SP2 SLAB SAW — GENERAL INFORMATION
Familiarization
The SP2 series
slab saws
are designed for
wet
or
dry
cutting
of concrete or asphalt utilizing diamond blades. They have been
engineered for general, industrial and high production flat cutting
applications. The reinforced steel box frame design adds strength
necessary to reduce vibrations while cutting. Minimizing
vibrations enhances the performance of the blade and extends
the life of the saw.
Heavy-duty front and rear axles, sturdy oversized wheels and
industrial undercarriage assembly ensures accurate tracking and
years of reliable use.
Additionally, the general weight-to-strength ration design of the
frame and chassis assembly provides optimum weight
distribution to keep the blade running true in the cut. A rugged
blade shaft bearing assembly ensures minimal flutter and shaft
harmonics providing the most advantageous condition for a
diamond blade at operating speeds.
Power Plants
The SP2 series slab saws are generally classified in the industry
as LOW to MEDIUM horsepower saws. This classification is
particularly useful when selecting the proper diamond blade for
an application.
There are two gasoline engines used with the SP2 series saws:
A
13 HP Honda GX390K1QWT2
air-cooled, 4-stroke single
cylinder, OVH rated at 3600 RPM and a
20HP Honda
GX620TXF2
air-cooled, 4-stroke OVH 90° V-twin rated at 3600
RPM. Blade rotation is v-belt driven. This is accomplished by
connecting to the output shaft of the engine to an upper drive
pulley. The lower drive pulley (Blade) is then connected to the
upper drive pulley (Engine) by three V-belts. As the engine shaft
rotates, so does the blade.
Refer to the engines Owner's Manual for the specific instructions
regarding engine operation and maintenance practices.
Console
An ergonomically designed control console allows the operator
to easily understand and/or operate the adjustable handlebars,
Raise/Lower Crank Handle
, and
transmission engage/
disengage lever
(Self-propelled models only). Additionally, for
self-propelled models, the console also provides forward/reverse
controls.
Manual Raise/Lower System
The SP2 slab saw uses an ACME thread, manual raise/lower
assembly easily raises and lowers the blade and can lock into
position to ensure a constant depth when cutting. See Table 6 for
blade selection with respect to depth of cut.
Water System
All saws provide a water direction system to provide cooling
water to the diamond blade. This system consists of: a standard
"garden hose" valve that connects to the water source (via hose)
to the saw, an
ON/OFF
console water valve'
The 20-inch blade guard is designed with two 6-inch vinyl water
tubes to direct water to the diamond blade.
Under Carriage System
A jig welded heavy steel gauge under carriage assembly
supports the saw in tracking, pivoting and stabilization. A rear
axle supports two solid rubber cast hub wheels with roller
bearings, grease fittings and locking collars. A front axle supports
two solid rubber cast hub wheels with roller bearings, grease
fittings and locking collars. The assembly pivots about two rocker
blocks with bushings.
Blade Drive System
A rugged blade shaft assembly has been specifically designed
to support the optimum distribution of torque from the engine
shaft to the blade shaft, and to ensure minimal vibratory conditions
on the tips of the shaft.
Balanced engine & blade shaft pulleys are connected to their
respective shafts, 3 V-belts (13HP, 4 V-belts for 20HP models)
connect to the engine pulley to the blade shaft pulley. The blade
shaft is supported by two self-aligning pillow block bearings that
are uniquely positioned on the most outboard portion of the
reinforced frame.
The combination of pulley and blade shaft bearing positioning
ensures minimal vibration & flutter to the ends of the blade shaft.
Water System
The MQ SP2 slab saw comes standard with a 20-inch hinged
two piece, heavy steel gauge blade guard. The blade guard
provides access for vinyl water tubes that supply optimum volume
and dispersal of water for cooling and/or dust suppression.
All MQ series SP2 slab saws are
designed, engineered and
manufactured with strict
adherence to American National
Standards Institute, Inc. (ANSI)
guidelines B7.1 and B7.5
NOTE