How to Buy a Used Pile Driving Rig
A pile driving rig is a carrier, a mast and leader system, and a set of winches, bought as one machine but assessed as three. The hammer it came with may or may not be the hammer you want, and the leader configuration determines what the rig can do far more than the base machine does.
This guide covers what to establish about each part, and the site constraints that most often disqualify an otherwise suitable rig.
Leaders, rake and reach
Start with the leader: its length, its maximum pile length, and the rake it can achieve both forwards and backwards and to each side. Raked piles are where rigs differ most, and a machine that only rakes in one plane will not suit work that needs battered piles in two.
Confirm the leader’s guides suit the piles you drive. Sheet piles, tubes, precast concrete and timber all want different guide arrangements, and changing them is neither quick nor free.
Establish the working radius and how the rig behaves at its extremes. Reach figures are usually quoted at a specific configuration and pile weight, and both change the answer.
Hammer compatibility
If the rig is sold with a hammer, treat them as two purchases. Assess the hammer on its own terms — energy range, service history, wear — and confirm that the rig’s hydraulics actually support it at full output.
If the rig is sold without a hammer, or you intend to use your own, confirm the mounting arrangement, the mass the leader is rated to carry, and the hydraulic flow and pressure available at the leader head.
Winches, ropes and the mast
Winches are worked hard on a driving rig. Check line pull ratings against the heaviest pile and hammer combination you would lift, inspect the drums and the ropes, and ask for rope certificates and their dates.
Look along the mast for straightness and check the pivots and rams that set the rake for play or weeping seals. Rake cylinders that cannot hold position are a safety problem, not a maintenance item.
Check the slew and the levelling system, and watch the rig set up and level from transport configuration if you can. Setup time is a real operating cost and a rig that fights its own levelling system will cost you every day.
Transport, ground pressure and setup
Establish transport weight and dimensions in the configuration you would actually move the rig in, including whether the leader has to come off and what that adds to each move.
Ground bearing pressure matters on soft sites and on structures. Get the figure, and get it for the loaded, raked case rather than the machine standing level and empty.
Inspection checklist
- Leader length and maximum pile length confirmed
- Rake range confirmed in every plane your work requires
- Pile guides confirmed suitable for the sections you drive
- Hammer assessed separately, and hydraulic support confirmed at full output
- Winch line pulls checked against your heaviest pile and hammer
- Ropes inspected and certificates dated
- Mast straightness, rake cylinders and levelling system checked
- Rig observed setting up from transport configuration
- Transport weight and dimensions established for a real move
- Ground bearing pressure obtained for the loaded, raked case
Frequently asked questions
Should I buy a rig with the hammer included?
It can be good value, but assess them separately. A rig bundled with an unsuitable or worn hammer is a rig plus a liability. Confirm the hammer’s energy range suits your piles and that the rig’s hydraulics support it at full output.
What rake do I need?
That depends entirely on your work. Many rigs rake generously forward and backward but little or not at all to the side. If you drive battered piles in two planes, confirm the rig can actually achieve it rather than assuming a quoted maximum applies in every direction.
How much does setup time matter?
More than most buyers expect. On short-duration jobs with frequent moves, the difference between a rig that erects and levels quickly and one that does not can outweigh a meaningful difference in purchase price.
Browse pile driving rigs on Piling Broker or read the other buyer’s guides.