MK Diamond MK-MANTA III - Manual (Page 12)

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The MK-Manta III Core Drill, with Milwaukee motor will operate in either a high or low gear speed.
This speed combined with applied pressure provides the cutting action for the core bit. Speed selec-
tion and pressure are determined by hardness of material, aggregate size and grade of diamond
core bit. Generally, harder material and larger aggregates require more speed and pressure. Use low
speed for large diameter bits and high speed for small diameter bits. Changing of the speeds is ac-
complished by using the speed shift lever built into the gear case.
All building materials and work surfaces are composed of aggregates of various size. Aggregates are
materials such as gravel or crushed stone. The size of the grains and the hardness of the material
affects the speed of drilling. Most building materials contain some type of steel reinforcements. All
MK-Manta III bits are designed to cut through these types of reinforcing steel. However, bits should
never be used for drilling solid steel plates. Proper selection of the diamond core bit should be based
on material to be drilled and performance requirements.
DRILLING SPEEDS
Combination
Base Drill
Stand *
Includes Vacuum
Weight 109 lbs. 109 lbs. 109 lbs. 109 lbs. 109 lbs.
Part# 158639 158641 157449 157448 158640
Combination
Tilt Base Drill
Stand
Includes Vacuum
Weight 114 lbs. 114 lbs. 114 lbs. 114 lbs. 114 lbs.
Part# 158647 158649 158644 158645 158648
Anchor Tilt
Base Drill
Stand
Weight – 95 lbs. 95 lbs. 95 lbs. 95 lbs.
Part# – 158657 158652 158653 158656
Anchor Base
Drill Stand
Weight – 74 lbs. 74 lbs. 74 lbs. 74 lbs.
Part# – 167324 167325 167326 167327
Bit Capacity 1/2" to 14"
Spindle 1-1/4"-7
Bit Feed 27"
L x W x H (inches)
L x W x H (mm)
19" x 24" x 46"
480 x 610 x 1,170
Motor Milwaukee
4004
Milwaukee
4090 Milwaukee
4094 Milwaukee
4096 Milwaukee
4097-20
Volts / Amps 120V / 20A 120V / 15A 120V / 20A 120V / 20A 120V / 15A
Clutch Slip Clutch Shear Pin Shear Pin Slip Clutch Slip Clutch
Motor RPM 300/600 375/750 450/900 450/950 500/1,000
Horsepower 1 HP 1 HP 1 HP 1 HP 1 HP
Change the gears only when the motor is off. NOTICE:
MANTA CORE DRILL III OPERATION