G-Force GFQ5000 QL50 Shank

G-Force QL50 diagram

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 G5001
2 Back Head O-Ring G5002
3 Choke  
4 Air Check Valve G5004
5 Air Check Valve Spring G5005
6 Make-Up Rubber (Buffering) G5006
7 Spacer Tube G5007
8 Air Distributor G5008
9 Air Distributor O-Ring G5009
10 Cylinder G5010
11 Cylinder Stop Ring G5011
12 Wear Sleeve G5012
13 Piston G5QL5013
14 Piston Stop Ring G5QL5014
15 Bit Bearing O-Ring G5QL5015
16 Bit Bearing G5QL5016
17 Bit Retaining O-Ring G5QL5017
18 Bit Retaining Ring G5QL5018
19 Chuck (Drive Sub) G5QL5019
  Choke Plug Kit G5029
  O-Ring Kit G5030

Specifications


Length (w/o drill bit) 44.38"
Outside Diameter 4.527"
Weight (w/o bit) 126.4 lbs.
Cylinder Bore 3.465"
Piston O.D. 3.736"
Piston Stroke 3.93"
Piston Weight 26 lbs.
Hole Sizes 5" - 6 1/2"
Air Pressure Consumption 100 psi - 350 psi
Wrench Size A/F 3.464"
Connection Std. 3 1/2" API Reg Pin

Air Consumption Chart


PSI 150 200 250 300 350 400
CFM with blank choke 280 400 520 660 800 -
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




Hammer Service Log


Wear Sleeve / Piston Clearance

Part New Dimension Discard Clearance
Wear Sleeve A 3.74" greater than or equal to 0.010"
Piston OD B 3.736"
Wear Sleeve / Piston Clearance diagram

Inner Cylinder / Piston Clearance

Part New Dimension Discard Clearance
Cylinder ID C 3.13" greater than or equal to 0.010"
Piston OD D 3.126"
Inner Cylinder / Piston Clearance diagram

Distributor Probe / Piston ID Clearance

Part New Dimension Discard Clearance
Distributor Probe OD F 1.181" greater than or equal to 0.010"
Piston ID E 1.194"
Distributor Probe / Piston ID Clearance diagram

External Wear

Description Wear Limit
Wear Sleeve Reverse Dimension 4.252"
Wear Sleeve Discard Dimension 4.134"
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 1/3 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 2 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 - 700 lbs. Maximum @ 350 psi - 2500 lbs.

Missile Warranty will be voided by the following:


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

READ WARNING LABEL ATTACHED TO HAMMER.