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G-Force GFQ8000 QL80 Shank

Hammer Specifications - G-Force QL80 Shank

G-Force QL80 diagram
Item #
Description Part #
1
Back Head G8001
2
Back Head O-Ring G8002
3
Choke  
4
Air Check Valve G8004
5
Air Check Valve Spring G8005
6
Make-Up Rubber (Buffering) G8006
7
Air Guide G8007
8
Air Distributor G8008
9
Air Distributor O-Ring G8009
10
Cylinder G8010
11
Cylinder Stop Ring G8011
12
Wear Sleeve G8QL8012
13
Piston G8QL8013
14
Piston Stop Ring G8QL8014
15
Bit Bearing O-Ring G8QL8015
16
Bit Bearing G8QL8016
17
Bit Retaining O-Ring G8QL8017
18
Bit Retaining Ring G8QL8018
19
Chuck (Drive Sub) G8QL8019
  Choke Plug Kit G8029
  O-Ring Kit G8030

Features:

  • Easy to service
  • Special heat-treated alloy piston for long life, Rockwell hardness 60
  • Back reaming buttons
  • Minimum loss of performance when injecting foam or water

 

Length (w/o drill bit)
53.5"
G-Force Logo


AWDS logo
Outside Diameter
7.08"
Weight (w/o bit)
366.7 lbs.
Cylinder Bore
5.984"
Piston O.D.
5.98"
Piston Stroke
4.13"
Piston Weight
95.8 lbs.
Hole Sizes
7 7/8" - 10"
Air Pressure Consumption
100 psi - 350 psi
Wrench Size
A/F 5.512"
Connection
Std. 4 1/2" API Reg Pin


Air Consumption Chart

PSI
150
200
250
300
350
400
CFM with blank choke
450
530
850
1,080
1,320
1,500
with 1/8" choke
375
595
760
9225
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 Dart Valve

pdfClick here to download brochurepdf



Hammer Service Log

Wear Sleeve / Piston Clearance

Part
New Dimension
Discard Clearance
Wear Sleeve
A
5.984"
greater than or equal to 0.010"
Piston OD
B
5.98"

Wear Sleeve / Piston Clearance diagram

Inner Cylinder / Piston Clearance

Part
New Dimension
Discard Clearance
Cylinder ID
C
5.197"
greater than or equal to 0.010"
Piston OD
D
5.192"

Inner Cylinder / Piston Clearance diagram

Distributor Probe / Piston ID Clearance

Part
New Dimension
Discard Clearance
Distributor Probe OD
F
1.803"
greater than or equal to 0.010"
Piston ID
E
1.811"

Distributor Probe / Piston ID Clearance diagram

External Wear

Description
Wear Limit
Wear Sleeve Reverse Dimension
6.811"
Wear Sleeve Discard Dimension
6.693"

NOTE:

  1. If no evidence of significant air pressure drop or if wear sleeve is wearing evenly on the top and bottom end, recommendation is to not reverse wear sleeve.
  2. Chuck should be replaced when wear transfers to wear sleeve.


Lubrication

G-Force 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 Pint per 100 cfm per hour.

Recommended Grades of Lubricant

ESSO
MATEX
CASTROL
SHELL
MOBILE
AROX EP 150
RDO 302
RD OIL DP 100
AIR TOOL OIL S2 A 320
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 - 2660 lbs.
Maximum @ 350 psi - 6510 lbs.

Missile Warranty will be voided by the following:

  1. Welding on Wear Sleeve.
  2. Heating Case with a Torch.
  3. Gripping Wrenches across Threads.
  4. Hammering on Casing.

READ WARNING LABEL ATTACHED TO HAMMER.

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