3″ GP300

Dominator 375 hammer gives up to 25% increase in performance compared to Dominator 350 and Dart 350.

This exceptional hammer is simple, robust and has a high penetration rate. The Dominator 375 has an integral N.R.V. (Non-Return-Valve)
with an adjustable air bleed system to adjust air volume, this hammer has a liner and solid piston design. This hammer has few internal parts which makes on site servicing easy with minimum tools needed. The MD 3.5 shank drill bit can be fitted for improved service life and heavy duty applications. Suitable for operation at air pressures of 100 – 350 psi (7 – 24 bar).Drilling diameters of 95mm – 115mm (3 1/2 – 4 1/8”).

 
Air Consumption
AT A GLANCE
SIZE
SHANK
AIR PRESSURE
95mm - 105mm
3 1/2 - 4 1/8”
MD3.5
100 - 362 psi
(7 - 25 bar)
300 Kg (660lbs)
Hammer Overview
Hammer Model GP300
Part Number 600393
Shank MD3.5
Thread Connection 2 3/8" API Reg Pin Up
Minimum Bit Diameter95mm
Hammer Flat Size64mm (2.520")
Weight 24 Kg (52.91 lbs)
Outside Diameter 85mm (3.35")
Length (shoulder to shoulder) 885mm (34.84")
Minimum Weight On Bit150 Kg (330lbs)
Maximum Weight On Bit
   
Parts List
Type GP300 Maintenance Kits
Shank MD3.5 Service Kit Repair Kit
Item Description Part No. SK64 RK101
1Thread Protector200111NoNo
2Top Adaptor604371NoNo
3Choke - Blank604480YesYes
Choke - 1/8"604481YesYes
Choke - 3/16"604482YesYes
4Non Return Valve604378YesYes
5N.R.V Spring760154NoNo
6Make up Shim - 4.9mm602634NoYes
Make up Shim - 5.3mm602635NoYes
Make up Shim - 5.7mm602636NoYes
7Compression Spring760107NoYes
8Air Distributor604461NoNo
9O-Ring768099YesYes
10Liner604459NoNo
11Cylinder604458NoNo
12Piston604460NoNo
13Snap Ring783051YesYes
14Retaining Ring Band792040YesYes
15Bit Retaining Ring604457NoYes
16Chuck604456NoYes
Foot Valve602922NoYes