G-Force Nova GFN12000 N120 Shank

Hammer Specifications - G-Force Nova N120 Shank

Nova Logo

G-Force N120 diagram

Features:
  • No foot valve required
  • 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 GFN12001
2
Back Head O-Ring GFN12002
3
Back Head Washer GFN12003
4
Air Check Valve GFN12004
5
Air Check Valve Spring GFN12005
6
Make-up Rubber GFN12006
7
Air Guide GFN12007
8
Air Guide Plug (Choke) GFN12008
9
Air Guide O-ring GFN12009
10
Air Distributor GFN12010
11
Air Distributor O-ring GFN12011
12
Cylinder GFN12012
13
Wear Sleeve GFNN12013
14
Piston GFNN12014
15
Piston Stop Ring (Buffering) GFN02015
16
Bit Bearing O-Ring GFN12016
17
Bit Bearing GFNN12017
18
Bit Retainer O-Ring GFN12018
19
Bit Retainer GFNN12019
20
Chuck Washer GFNN12020
21
Chuck Bushing GFNN12021
22
Chuck (Drive Sub) GFNN12022

Specifications


Length (w/o drill bit) 77.36"
Outside Diameter 10.35"
Weight (w/o bit) 1499 lbs.
Cylinder Bore 8.267"
Piston O.D. 7.33"
Piston Stroke 5"
Piston Weight 254 lbs.
Hole Sizes 11 7/8" - 17 1/2"
Air Pressure Consumption 100 psi - 350 psi
Wrench Size A/F 7.95"
Connection Std. 6 5/8" API Reg Pin

Air Consumption Chart


PSI 150 200 250 300 350 400
CFM with blank choke 350 520 690 855 1,020 -
with 1/8" choke 375 548 728 904 1,087 1,236
with 1/4" choke 425 613 811 1,070 1,302 1,385

All Hammers come Fitted with blank Choke located in the Air Check Valve




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 - 5600 lbs. Maximum @ 350 psi - 9900 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.