Pile and Hammer Cushions
SPS Concrete Pile Cushions
SYP Plywood Cushions for Concrete Piles of all types, including Square Piles,Cylinder Piles and Sheet Piles of any size or thickness; shipped nationwide, from New England to Hawaii, from California to Florida
SPS CONCRETE PILE CUSHIONS are fabricated to suit the customer’s requirements and are provided as preformed blocks. Blocks are constructed of new plywood materials with minimal voids or, hardwood (mixed, all oak or, Azobé) planks or end grain timbers or composites of these where the top and bottom faces are of plywood. These blocks can be supplied to fit square or round drive caps. Square blocks can be provided with or without clipped corners. Larger square blocks can be provided with center voids to match the shape of the pile when required. All cushions are palletized and shrink wrapped for shipping and short term on site storage. SPS can also provide single pieces of plywood, cut to specified dimensions for fabrication on site or used to adjust cushion thickness to meet varying driving or job conditions.
SPS CYLINDER PILE CUSHIONS
SPS CYLINDER PILE CUSHIONS are constructed of layers of new plywood materials with minimal voids, to achieve the required thickness (cushion height). Each layer consists of segments having a curved outer and either straight or curved inner edge, uniformly fitted to each adjacent, neighboring piece to form a continuous, “Donut” shaped ring. Each layer is nailed to form a fixed unit. The joints of the neighboring segments in each layer are staggered in relation to the joints of the layers above and below to provide a lapping effect, strengthening the entire cushion. The Outside Diameter is sized to meet the drive cap and pile dimensions with the Inside Dimension providing for wall thickness as required. All cushions are palletized and “shrink wrapped” for shipping and to provide short term on-site weather protection until use.
SPS-HD CUSHIONS (for hard driving situations)
SPS-HD Cushions are fabricated using a proprietary system to provide a tighter, more durable cushion. SPS-HD Cushions are job proven to better withstand the demands of hard driving projects, reducing the need to change cushions mid driving and saving rig and crew downtime.
We are Authorized Sales Agents for Penn State Fabricators, manufacturers of Conbest© & Conbest II©, the leading pile hammer cushion materials in use in the United States. These cushions are frequently supplied as OEM specified and are suitable for use in all hammers.
Conbest© is a phenolic canvas material, the same as and, manufactured to the same specifications as Micarta©, a common trade name for hammer cushions. It is typically used with a special alloy Aluminum disc interspersed between layers of phenolic material for heat dissipation.
|Conbest II© is a polymer plastic (nylon) material specially formulated for heat resistance and is frequently used in diesel hammers as well as other types of hammers. Aluminum is also frequently used with this material for control of heat.|
Special Application Hammer Cushions
HAMORTEX© cushions are manufactured by laminating thin aluminum sheeting with either Kevlar or a special fiber, and then rolled or stacked to the desired thickness. Hamortex© employs a heat dissipating system in the fiber to resist burning. It conforms easily to irregular and non-parallel surfaces. Hamortex is available in two grades: HAMORTEX-S©, for light to medium driving and HAMORTEX-X©, for hard continuous driving.
BONGOSSI (AZOBÉ) cushions are fabricated from a very durable tropical hardwood, native to west central Africa. It is reported as 59% harder, 94% stronger (compressive strength), 39% stiffer, and 51% heavier than North American Red Oak. Bongossi (or Azobé) has for many years proven to be effective as a cushion in pile hammer applications for Offshore and Drop hammers.