5” GP500 – DHD350
The GP500 is a high performance hammer which can drill under a head of water, typically suited to Waterwell and Geothermal applications due to its non-ported piston design.
It features a choke facility which helps to adjust air flow through the hammer.
| At a Glance | |||
|---|---|---|---|
|
Size
|
Shank
|
Air pressure
|
Air flow
|
|
140mm - 165mm
5 1/2 - 6 1/2 |
DHD350
|
100 - 435 psi
7 - 30 bar |
180 - 1440 cfm
5097 - 40776 l/min |
| Hammer Overview | ||||
|---|---|---|---|---|
| Hammer Model | GP500 - DHD350 | |||
| Part Number | 600426 | |||
| Shank | DHD350 | |||
| Thread Connection | 3 1/2" API Reg Pin Up | |||
| Minimum Bit Diameter | 140mm | |||
| Hammer Flat Size | 66mm (64.750") | |||
| Weight | 60 Kg (132.3 lbs) | |||
| Outside Diameter | 126mm (4.96") | |||
| Length (shoulder to shoulder) | 1074mm (42.3") | |||
| Minimum Weight On Bit | 400 Kg (900 lbs) | |||
| Maximum Weight On Bit | 900 Kg (1980 lbs) | |||
| Parts List | Maintenance Kits | ||||
|---|---|---|---|---|---|
| Type | GP500 - DHD350 | Service Kit | Repair Kit | ||
| Shank | DHD350 | ||||
| Item | Description | Part No. | SK83 | RK138 | |
| 1 | Thread Protector | 201701 | No | No | |
| 2 | Top Adaptor | 604558 | No | No | |
| 3 | Choke - Blank | 604480 | Yes | Yes | |
| Choke - 1/8" | 604481 | Yes | Yes | ||
| Choke - 3/16" | 604482 | Yes | Yes | ||
| 4 | Non Return Valve | 604444 | No | No | |
| 5 | N.R.V Spring | 760079 | Yes | Yes | |
| 6 | Make up Shim - 4.5mm | 604446 | No | Yes | |
| Make up Shim - 5.0mm | 604447 | No | Yes | ||
| Make up Shim - 5.5mm | 604448 | No | Yes | ||
| 7 | Compression Spring | 760109 | No | No | |
| 8 | Air Distributor | 604442 | No | No | |
| 9 | O-Ring | 768202 | Yes | Yes | |
| 10 | Liner | 604932 | No | No | |
| 11 | Square Snap Ring | 604937 | Yes | Yes | |
| 12 | Cylinder | 604931 | No | No | |
| 13 | Piston | 604439 | No | No | |
| 14 | Snap Ring | 783054 | Yes | Yes | |
| 15 | Bit Retaining Ring | 604689 | No | Yes | |
| 16 | Chuck | 604688 | No | Yes | |
| Foot Valve | 601902 | No | Yes | ||
