Product Details
This G-Force QL40 Shank DTH Hammer is manufactured using the highest quality materials available which increases reliability, performance, and production.
Hammer Specifications – G-Force QL40 Shank
Features:
- 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 | G4001 |
| 2 | Back Head O-Ring | G4002 |
| 3 | Choke | |
| 4 | Air Check Valve | G4004 |
| 5 | Air Check Valve Spring | G4005 |
| 6 | Make-Up Rubber (Buffering) | G4006 |
| 7 | Air Guide | G4007 |
| 8 | Air Distributor | G4008 |
| 9 | Air Distributor O-Ring | G4009 |
| 10 | Cylinder | G4010 |
| 11 | Cylinder Stop Ring | G4011 |
| 12 | Wear Sleeve | G4QL4012 |
| 13 | Piston | G4QL4013 |
| 14 | Piston Stop Ring | G4QL4014 |
| 15 | Bit Bearing O-Ring | G4QL4015 |
| 16 | Bit Bearing | G4QL4016 |
| 17 | Bit Retaining O-Ring | G4QL4017 |
| 18 | Bit Retaining Ring | G4QL4018 |
| 19 | Chuck (Drive Sub) | G4QL4019 |
| Choke Plug Kit | G4029 | |
| O-Ring Kit | G4030 |
Specifications
| Length (w/o drill bit) | 40.55" |
| Outside Diameter | 3.858" |
| Weight (w/o bit) | 82.9 lbs. |
| Cylinder Bore | 3.229" |
| Piston O.D. | 3.224" |
| Piston Stroke | 3.74" |
| Piston Weight | 20.3 lbs. |
| Hole Sizes | 4" - 6" |
| Air Pressure Consumption | 100 psi - 350 psi |
| Wrench Size | A/F 3.15" |
| Connection | Std. 2 7/8" API Reg Pin |
Air Consumption Chart
| PSI | 150 | 200 | 250 | 300 | 350 | 400 |
|---|---|---|---|---|---|---|
| CFM with blank choke | 240 | 340 | 440 | 540 | - | - |
| with 1/8" choke | 375 | 595 | 760 | 925 | 1,060 | 1,205 |
| with 1/4" choke | 425 | 665 | 845 | 1,095 | 1,270 | 1,350 |
All Hammers come fitted with blank Choke located in the Air Check Valve
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 - 500 lbs. | Maximum @ 350 psi - 1800 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.
