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PAGE 10 —CDM1H CORE DRILL — OPERATION AND PARTS MANUAL — REV. #6 (09/08/10)
CDM1H HAND-HELD CORE DRILL — GENERAL INFORMATION
APPLICATION
The
MQ CDM1H Hand-Held Core Drill
is designed to be
used for either dry or wet drilling applications involving con-
crete type materials. Up to 3-inch (76.2 mm) diameter holes
can be drilled for
wet
drilling applications using
standard
MQ drill bits or 5-1/8 inch (130 mm) diameter holes for
wet
or dry
applications using the Cobra™ drill bits.
Power Plant
The MQ CDM1H is powered by a 115 VAC electric motor @12
amps. Maximum RPM's is 2200 . The unit weighs 9.0 lbs (3.35 kg.)
Features
The CDM1H kit comes as follows:
■
Hand-Held Core Bit Power Drill
■
Carrying Case
■
Two Core Bit Adapters
■
Detachable Threaded Handle
■
Water Kit
■
Tools for Core Bit Connection/Removal
■
Operation and Parts Manual
Cobra™ Drill Bits (Wet and Dry)
The Cobra™ drill bits are engineered to drill through reinforced
concrete with or without water. These bits are available in 6 or 10
inch (15.24- 25.4 cm.) drilling
depths
and range in
diameter
from 1 to 5 inches (25 to 127 mm.).
Standard MQ Drill Bits (Wet)
This core drill can use the following series of wet drilling bits:
■
GCB Series – economy quality small jobs.
■
GB Series – standard quality small to mid-size jobs.
■
PRB Series – premium quality for fast speeds.
■
PCB Series – super premimum quality and long life.
■
PCB Series – pro quality, high steel content and
extremely hard aggregate small jobs.
Threads/Adapters and Core Bit Combinations
Figure 1 and Table 1 depict most Adapter/Core Bit
combinations and part numbers. The CDM1H is
manufactured with an 18mm male drive end that directly
connects to all MQ COBRA™ drill bits. For other US standard
threading options, the CDM1H includes two adapters: (1)
ADM1858 – that permits connection of 5/8”-11 female
threaded bits, and (2) ADM181147 – that permits connection
of 1 ¼”-7 female threaded bits. All other adapters/extensions
are available as optional part items.
Figure 1. Threads/Adapters and Core Bit Combinations
1
2
1
2
12
6
1
6
1
10
3
3
13
6
1
6
1
10
4
4
13
7
1
7
1
5
5
11
14
COBRA BIT (M18) SET-UPS – up to 5-in. dia.
BLOCKBUSTER (5/8-in. - 11F) SET-UPS – up to 5-in. dia.
WET BITS 5/8-in. - 11F THREAD – up to 3-in. dia.
WET BITS - 1-1/4 - 7 THREAD – up to 3-in. dia.
(Non-COBRA Bits)