G-Force Nova GFNM12000 SD12 Shank

Hammer Specifications - G-Force Nova SD12 Shank

Nova Logo

G-Force SD12 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 Washer GFN12002
3
Back Head O-ring GFN12003
4
Buffering Washer GFN12004
5
Make-Up Rubber(Buffering) GFN12005
6
Air Check Valve GFN12006
7
Air Check Valve Spring GFN12007
8
Air Guide Plug (Choke) GFN12008
9
Air Guide GFN12009
10
Air Guide O-ring GFN12010
11
Air Distributor GFN12011
12
Air Distributor O-Ring GFN12012
13
Cylinder GFN12013
14
Wear Sleeve GFN12014
15
Piston GFN02015
16
Piston Stop Ring (Buffering) GFN12016
17
Bearing GFN12017
18
Bearing O-Ring GFN12018
19
Bearing Stop Ring GFN12019
20
Bit Retaining GFN12020
21
Bit Retaining O-Ring GFN12021
22
Guide Sleeve GFN12022
23
Chuck Washer GFN12023
24
Chuck GFN12024

Specifications


Length (w/o drill bit) 71.5"
Outside Diameter 10.35"
Weight (w/o bit) 1232 lbs.
Cylinder Bore 8.27"
Piston O.D. 8.26"
Piston Stroke 4.5"
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 100 150 200 250 300 350
CFM with blank choke 418 672 974 1,268 1,548 1,756
with 1/8" choke 480 750 1,100 1,400 1,700 1,900
with 1/4" choke 600 880 1,200 1,500 1,800 2,000

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.