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G-Force GFM4000 SD4 Shank

Hammer Specifications - G-Force SD4 Shank

G-Force SD4 hammer breakdown
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 G4M4013
14
 Piston Stop Ring G4M4014
15
 Bit Retaining O-Ring G4M4015
16
 Bit Retaining Ring G4M4016
17
 Chuck (Drive Sub) G4M4017
  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; DRILLS WELL UNDER WATER


Length (w/o drill bit)
39.76"
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Outside Diameter
3.858"
Weight (w/o bit)
82.4 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


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 0.010"
Piston OD
D
2.752"

Inner Cylinder / Piston Clearance diagram

Distributor Probe / Piston Clearance

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

Distributor Probe / Piston Clearance

External Wear

Description
Wear Limit
Wear Sleeve Discard Dimension
3.425"
NOTE: Chuck should be replaced when wear transfers to wear sleeve.

 

Lubrication

The Missile LXQ 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
TORCULA 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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