140 LB AUTOMATIC SPT HAMMER SYSTEM

    The DDI automatic SPT hammer system hydraulically lifts a 140 lb drive weight and completely releases the weight for a 30 in. free fall. The drive weight does not have a cable or rope attached that may impede its it fall. The hammer is operated at a rate up to 50 blows per minute, The tolerance of the fall height is a plus or minus 3/8 inch. The hammer mounts on the Rotary Box so that it can be hydraulically raised and lowered and easily moved to the on-hole driving position. The hammer can also be operated while suspended from a winch cable. The hammer driving force is transmitted only to the anvil and rods, and the hammer allows for up to 24 inches of driving without movement of the hammer body. The drive weight, lifting mechanism and anvil impact surface are enclosed to provide optimum safety.

THE DIEDRICH AUTOMATIC SPT HAMMER CONFORMS TO ASTM D-1586

The automatic hammer system provides:

• Easy and efficient operation
• Consistent driving forces for penetration testing
• Optimum safety
• Up to 50 blows per minute driving rate
• 6 ft. vertical travel when mounted on the rotary box
• Can be used with any drill rig
• Removal of the split-spoon sampler hydraulically
• Convenient off-hole storage
• Casing and well point driving capability
• Operation unaffected by weather conditions
• A safety feature that prevents the hammer from operating if the anvil is not in place

Our new style Automatic Hammer mounted on a D-50 Track