Automatic Free Fall Hammer
Product Code : JA-ST-9787
The Automatic Free Fall Hammer (SKU JA-ST-9787) is the drop hammer assembly for the Standard Penetration Test (SPT) in site investigation boreholes. A trigger mechanism releases the hammer from the same height on every blow, and a guide system keeps the guide rod and drill rod assembly vertical and aligned for the whole test, so each blow delivers equal impact energy.
Specifications
The hammer is defined by its release and guide arrangement:
| Product | Automatic Free Fall Hammer |
| SKU | JA-ST-9787 |
| Test | Standard Penetration Test (SPT) |
| Release | Trigger mechanism that standardises the height of fall |
| Alignment | Guide system keeping the guide rod and drill rod assembly vertical and aligned |
| Hammer mass and drop height | Confirmed on the quotation |
Scope of supply and ordering
The listing covers the free fall hammer with its trigger and guide system; state whether drill rods or a split-spoon sampler are also needed. The quotation states the packing, the lead time and the number of units.
Frequently asked questions
Why does an SPT hammer need a trigger release?
A trigger mechanism drops the hammer from a standardised height on every blow, so each blow carries the same impact energy and blow counts can be compared.
How is the drill rod kept vertical?
A guide system holds the guide rod and drill rod assembly vertical and in line throughout the test.
Related products
- Standard Penetration Test Set
- Static Cone Penetrometer
- Cone Penetration Testing
- Fox-100 Stand Alone Penetrometer Pusher
Related items are grouped in the JaincoLab soil testing equipment range.
Request a quote
Quotations for the Automatic Free Fall Hammer are prepared on request through the JaincoLab contact page. Institutions and contractors buying under a tender can also reach us via the tenders page.
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