Product Details
This G-Force Nova QL50 DTH Hammer uses the latest technology in “No Foot Valve” hammer bits; increasing reliability, performance, and production.
Hammer Specifications – G-Force Nova 2.0 QL50 Shank
Features:
- No foot valve required
- Easy to service
- Special heat-treated alloy piston for long life, Rockwell hardness 60
- Minimum loss of performance when injecting foam or water
| Item # | Description | Part # |
|---|---|---|
| 1 | Back Head | GFN5501 |
| 2 | Back Head O-Ring | GFN5502 |
| 3 | Air Check Valve | GFN5503 |
| 4 | Air Check Valve Spring | GFN5504 |
| 5 | Air Guide | GFN5505 |
| 6 | Air Guide Plug (Choke) | GFN5506 |
| 7 | Air Guide O-Ring | GFN5507 |
| 8 | Make-Up Rubber | GFN5508 |
| 9 | Air Distributor | GFN5509 |
| 10 | Air Distributor O-Ring | GFN5510 |
| 11 | Cylinder | GFN5511 |
| 12 | Wear Sleeve | GFN5512 |
| 13 | Piston | GFNQ5513 |
| 14 | Piston Stop Ring | GFN5514 |
| 15 | Bit Bearing | GFNQ5515 |
| 16 | Bit Bearing O-Ring | GFN5516 |
| 17 | Bit Retainer | GFNQ5517 |
| 18 | Bit Retainer O-Ring | GFN5518 |
| 19 | Chuck (Drive Sub) | GFNQ5519 |
| 20 | O-Ring Kit | GFN5520 |
Specifications
| Length (w/o drill bit) | 39.02" |
| Outside Diameter | 4.88" |
| Weight (w/o bit) | 146.4 lbs. |
| Cylinder Bore | 3.547" |
| Piston O.D. | 3.54" |
| Piston Stroke | 2.09" |
| Piston Weight | 32.5 lbs |
| Hole Sizes | 5 1/8" - 6" |
| Air Pressure Consumption | 150 psi - 450 psi |
| Wrench Size | A/F 3.47" |
| Connection | Std. 3 1/2" API Reg Pin |
Air Consumption Chart
| PSI | 150 | 200 | 250 | 300 | 350 | 400 |
|---|---|---|---|---|---|---|
| CFM with blank choke | 343 | 481 | 618 | 748 | 893 | 1,031 |
| with 1/8" choke | 388 | 528 | 668 | 808 | 948 | 1,088 |
| with 1/4" choke | 423 | 578 | 733 | 888 | 1,043 | 1,198 |
Lubrication
G-Force Nova Series Hammers are precision-made tools and should be treated as such. Only the highest quality lubrication should be used and a constant flow of oil must be maintained at all times. Recommended lubrication amount 1/3 Pint per 100 cfm per hour.
| Recommended Grades of Lubricant | |
|---|---|
ESSO |
AROX EP 150 |
MATEX |
RDO 302 |
CASTROL |
RD OIL DP 100 |
SHELL |
AIR TOOL OIL 2 A 320 |
MOBILE |
ALMO NO. 5 |
Heavy duty oil is recommended for all year-round use, in particular where air supply to the hammer is at high temperature. If lighter grade oil is required due to very low ambient temperatures, amount of oil being used should be increased by 30 percent.
Recommended Pull Down
| Minimum @ 100 psi - 750 lbs. | Maximum @ 350 psi - 2500 lbs. |
|---|---|
Hammer Warranty will be voided by the following:
Welding on Wear Sleeve.
Heating Case with a Torch.
Gripping Wrenches across Threads.
Hammering on Casing.
