Rock Reamers
Rock Reamers
No more redrills due to cutters backing off downhole.
The Roschen RockReamer is the most vertsatile, cost effective hole opener for HDD. The unique design minimizes on-site inventory, lowering cost.
The Roschen RockReamer cuts downtime as easily as it cuts rock.
No more downtime waiting on new tools/cutters when the need to push ream occurs. It pushes or pulls with the same body and cutters, and one body opens to six sizes.
Stronger than other hole openers.
Increased on-bottom rotating time, minimizes cutter cost and trip time.
Cutters and arms are easily changed in the field without torches and welders.
RockReamer Specs
BODY
| BODY | MIN. PILOT HOLE | CONNECTION | WEIGHT | LENGTH |
| R4 | 4 1/2" | 2 7/8" IF B X B | 135 LBS. | 42" |
| R6 | 6" | 3 1/2" IF B X B | 346 LBS. | 52" |
| R6-20 | 20" | 4 1/2" IF B X B | 1565 LBS. | 62" |
| R8 | 8 1/2" | 4 1/2" IF B X B | 730 LBS. | 65" |
| R17 | 17 1/2" | 7 5/8" REG B X B | 1915 LBS. | 65" |
| R26 | 26" | 7 5/8" REG B X B | 2669 LBS. | 65" |
| R36 | 36" | 7 5/8" REG B X B | 2569 LBS. | 65" |
| R42 | 42" | 7 5/8" REG B X B | 3290 LBS. | 65" |
| R48 | 48" | 7 5/8" REG B X B | 3900 LBS. | 65" |
CUTTERS
| BODY | NO. OF CUTTER | PILOT HOLE | CONNECTION | OPENING RANGE | |||||
| R4 | 3 | 4 1/2" | 2 7/8" IF B X B | 8 1/2" | 10" | 12" | |||
| BODY | NO. OF CUTTER | PILOT HOLE | CONNECTION | OPENING RANGE | |||||
| aa | bb | cc | dd | ee | |||||
| R6 | 3 | 6" | 3 1/2" IF B X B | 12" | 14" | 16" | 18" | 20" | |
| R6-20 | 5 | 20" | 4 1/2" IF B X B | 24" | 26" | 28" | 30" | 32" | |
| BODY | NO. OF CUTTER | PILOT HOLE | CONNECTION | OPENING RANGE | |||||
| A | B | C | D | E | F | ||||
| R8 | 3 | 8 1/2" | 4 1/2" IF B X B | 16" | 18" | 20" | 22" | 24" | 26" |
| R17 | 3,4 | 17 1/2" | 7 5/8" REG B X B | 24" | 26" | 28" | 30" | 32" | 34" |
| R26 | 3,5 | 26" | 7 5/8" REG B X B | 32" | 34" | 36" | 38" | 40" | 42" |
| R36 | 3,5 | 36" | 7 5/8" REG B X B | 42" | 44" | 46" | 48" | 50" | 52" |
| R42 | 4,5,7 | 42" | 7 5/8" REG B X B | 48" | 50" | 52" | 54" | 56" | 58" |
| R48 | 4,5,7 | 48" | 7 5/8" REG B X B | 54" | 56" | 58" | 60" | 62" | 64" |
CUTTERS AND WEIGHTS
| R4 | R6 | A | B | C | D | E | F | |||||||
| 8-1/2" | 10" | 12" | aa | bb | cc | dd | ee | |||||||
| MT | 4 | 8 | 12 | 15 | 23 | 31 | 41 | 56 | 32 | 47 | 64 | 80 | 102 | 128 |
| TCI | 6 | 10 | 16 | 21 | 30 | 42 | 55 | 73 | 41 | 61 | 79 | 100 | 126 | 155 |
| FRA | 5 | 7 | 9 | 20 | 24 | 28 | 35 | 37 | 50 | 55 | 68 | 75 | 88 | 101 |
Formation Removal Chart
Use this chart to calculate the approximate cubic feet of material removed per foot drilled. To calculate the total cubic yards of material to be removed, multiply the cubic feet by the total footage and divide by 27
How to Change Cutters.
1. Place the correct size cutter into the pocket.
2. Slide the arm into place, securing the cutter.
3. Tighted the three bolts according to chart. (see below)
4. Tighten the lock screws according to chart. (see below)
5. Repeat for each cutter.
| SIZES | ALLEN WRENCH | TORQUE | LOCK SCREW / TORQUE |
| R8 thru R-48 | 1" | 2000-2500 ft/lb | 5/8" / 400-500 ft/lb |
| R4 | 5/8" | 400-500 ft/lb | 5/16" / 40-60 ft/lb |
| R6 | 7/8" | 1000-1200 ft/lb | 3/8" / 100-150 ft/lb |
