The Fletcher Model CDR is a crawler-mounted compact roof drill designed for longwall mining and general purpose bolting in medium to high roof conditions. The boom swings and extends to allow multiple bolt installations from one chassis position. The drill mast tilts to allow angle bolting.
Standard equipment includes:
- Automated Temporary Roof Support (ATRS) with canopy with hydraulic pivot
- Deep chuck drillhead
- Automatic disc brakes
- 12 in. Fletcher crawler drive system
- Cable reel
- IS start/stop switches
- Fire suppression system
- MSHA approved dust collection
- Dust collection bags
- MSHA approved lighting
Note
Joy is the exclusive distributor and authorized service provider for J.H. Fletcher & Co. products worldwide, with the following country exceptions:
Not a distributor or authorized service provider
- United States
- Canada
- Mexico
- Australia
- Norway
Non-exclusive distributor and authorized service provider
Electrical system
- 50 HP AC motor
- Cable reel
- IS start and stop at drill and tram controls
- MSHA approved illumination
Dust collection
- Internal through drill steel
- Blower: 62 cfm rotary lobe type
- Vacuum at drillhead: 12" Hg minimum
- Fletcher dust tanks
- Auto dump pre-cleaners
- Dust collection bags
Hydraulic system
- 3500 psi
- Tank capacity: 80 US gallons
- Filtration magnetic in-tank
- 25 micron in-line
- Hand-operated fill pump: screened intake
- Hose fittings
- JIC
Drive system
- Crawler: 12" wide forged track pads
- Planetary final drive
- Internal brake and two-speed piston drive motor
- Tram motors: Staffa B80 series or Eaton VIS
- Articulating chassis
| Boom swing |
30" either side of center (762 mm) |
| Boom sump |
12" (305 mm) |
| Drill length |
19' (5791 mm) |
| Width |
60" (1524 mm) |
| Height |
52" (1320 mm) |
| Ground clearance |
9" to 12" (229 mm to 304 mm) |
| Weight |
18,000 lbs. (8164 kg) |
- Cable reel
- Rubber tire drive system
- Methane monitors
- Rotary impact drillheads
- Deisel powered
- Hydraulic tram canopy
- G-10 Garolite cable reel flanges
- Five bolt pattern capabity
- Hydraulic power takeoff
- Downhole drilling attachment
- 16" Fletcher crawler drive
- Radio remote control tram
- Rock duster
- Lifting boom assembly
- Hydraulic flow meters
- Venturi or motor oil fill
- Articulating chassis
- Training cable limit control