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 Diameter			95mm
Hammer Flat Size			64mm (2.520")
Weight			24 Kg (52.91 lbs)
Outside Diameter			85mm (3.35")
Length (shoulder to shoulder)			885mm (34.84")
Minimum Weight On Bit			150 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
1	Thread Protector	200111	No	No
2	Top Adaptor	604371	No	No
3	Choke - Blank	604480	Yes	Yes
	Choke - 1/8"	604481	Yes	Yes
	Choke - 3/16"	604482	Yes	Yes
4	Non Return Valve	604378	Yes	Yes
5	N.R.V Spring	760154	No	No
6	Make up Shim - 4.9mm	602634	No	Yes
	Make up Shim - 5.3mm	602635	No	Yes
	Make up Shim - 5.7mm	602636	No	Yes
7	Compression Spring	760107	No	Yes
8	Air Distributor	604461	No	No
9	O-Ring	768099	Yes	Yes
10	Liner	604459	No	No
11	Cylinder	604458	No	No
12	Piston	604460	No	No
13	Snap Ring	783051	Yes	Yes
14	Retaining Ring Band	792040	Yes	Yes
15	Bit Retaining Ring	604457	No	Yes
16	Chuck	604456	No	Yes
	Foot Valve	602922	No	Yes