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G-Force GFR4000 IR340 Shank

Hammer Specifications - G-Force IR340 Shank

G-Force IR340 diagram
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 G4012
13
Piston G4R4013
14
Piston Stop Ring G4R4014
15
Bit Retaining O-Ring G4R4015
16
Bit Retaining Ring G4R4016
17
Chuck (Drive Sub) G4R4017
  Choke Plug Kit G4029
  O-Ring Kit G4030

Features:

 

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

Length (w/o drill bit)
37.83"
G-Force Logo


AWDS logo
Outside Diameter
3.858"
Weight (w/o bit)
78.9 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 Dart Valve

pdfClick here to download brochurepdf



Hammer Service Log

Wear Sleeve / Piston Clearance

Part
New Dimension
Discard Clearance
Wear Sleeve
A
3.228"
greater than or equal to 0.010"
Piston OD
B
3.224"

Wear Sleeve / Piston Clearance diagram

Inner Cylinder / Piston Clearance

Part
New Dimension
Discard Clearance
Cylinder ID
C
2.756"
greater than or equal to 0.010"
Piston OD
D
2.752"

Inner Cylinder / Piston Clearance diagram

Distributor Probe / Piston ID Clearance

Part
New Dimension
Discard Clearance
Distributor Probe OD
F
0.978"
greater than or equal to 0.010"
Piston ID
E
0.984"

Distributor Probe / Piston ID Clearance diagram

External Wear

Description
Wear Limit
Wear Sleeve Discard Dimension
3.425"
NOTE: 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 1/3 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 - 500 lbs.
Maximum @ 350 psi - 1800 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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