The primary helmet and pile-specific insert form the working drive-cap assembly. Primary helmets include the matched striker plate, while the interchangeable insert adapts the assembly to the pile.
Primary helmets form the main interface between the hammer, striker plate and pile-specific insert.
| Helmet Name | U-Lead Guiding | Striker Plate | Weight |
|---|---|---|---|
| PIE-PH-26 | 26" × 8" | 23" | 2,200 lb |
| PIE-PH-32 | 32" × 8" | 23" | 1,050 lb |
| PIE-PH-32-HD | 32" × 8" | 23" | 2,820 lb |
| PIE-PH-26/36 | 26" × 8" / 32" × 8" | 23" | 2,750 lb |
| PIE-PH-36/42 | 36" × 8" / 42" × 8" or 10" | 23" | 5,400 lb |
Interchangeable inserts adapt the primary helmet to concrete, H-pile, pipe, timber and sheet-pile sections.
| Insert Type | Supported Size / Capacity | Weight |
|---|---|---|
| Concrete Pile | 12" square | 1,356 lb |
| Concrete Pile | 14" square | 1,023 lb |
| Concrete Pile | 16" square | 1,570 lb |
| Concrete Pile | 18" square | 1,715 lb |
| Concrete Pile | 20" square | 1,724 lb |
| H-Pile | 10", 12", 14" H-pile | 890 lb |
| Pipe Pile | Up to 16" diameter | 760 lb |
| Pipe Pile | Up to 24" diameter | 1,380 lb |
| Pipe Pile | Up to 30" diameter | 2,210 lb |
| Timber Pile | Up to 16" diameter | 560 lb |
| Sheet Pile | 30.5" length · 26.5" × 8" minimum U-lead | 870 lb |
| Sheet Pile | 38" length · 32.5" × 8" minimum U-lead | 2,600 lb |
| Sheet Pile | 43" / 39" length · 32.5" × 8" minimum U-lead | 2,600 lb |
| Sheet Pile | 51" length · 42.5" × 8" minimum U-lead | 3,550 lb |
| Universal Steel | 8", 10", 12" steel beams | 970 lb |
| Universal Pipe | 10", 12", 14" steel pipe | 970 lb |
Heavy cast-steel helmets for square precast concrete piles, with machined cushion and insert receptacles.
| Helmet Name | Square Pile Size | Cushion | U-Lead Size | Weight |
|---|---|---|---|---|
| CH24-32 | 24" | 23" | 32.5" × 8" | 5,620 lb |
| CH24-32/42 | 24" | 23" | 32.5" × 8" / 42.5" × 8" | 7,056 lb |
| CH30-42 | 30" | 23" | 42.5" × 11" | 12,000 lb |
Heavy-duty helmets engineered for large-diameter steel pipe piles and offshore lead systems.
| Cushion | U-Lead | Pipe Sizes | Weight |
|---|---|---|---|
| 23" | 36.5" × 8" / 42.5" × 8" | 16" × 1", 20" × 1", 24" × 1½", 30" × 1½", 36" × 1½" | 6,300 lb |
| 27" | 48.5" × 8" / 54.5" × 8" | 24" × 1½", 30" × 1½", 36" × 1½", 42" × 2", 48" × 2" | 14,400 lb |
| 37" | 66.5" × 8" / 68.5" × 12" | 42" × 2", 48" × 2", 54" × 1½", 60" × 1½", 66" × 1½" | 26,600 lb |
Striker plates distribute impact energy from the hammer into the helmet and cushion system.
| Plate Size | Weight |
|---|---|
| 17" × 4" | 200 lb |
| 19" × 6" | 380 lb |
| 23" × 10" | 950 lb |
| 27" × 12" | 1,550 lb |
| 37" × 12" | 3,080 lb |