HAMMERHEAD 4.00" RH SR — PIPE RAMMING HammerHead® pneumatic pipe-ramming tools lead the industry in reliability and easy maintenance. Our tools are designed to handle the toughest ramming projects with ease and exceptional performance, with features you won’t find on competitive models. We offer 11 models ranging from 4" to 34" (102 mm to 860 mm), capable of installing casing from 4" to 180" (102 mm to 4,570 mm).Air reverse All HammerHead ramming tools larger than 7" (180 mm) feature a patented and reliable true air reverse with no internal mechanism. The reverse function is controlled above ground, simplifying tool removal from the pushing collets. FEATURES CLAMPED REAR ANVIL The rear anvil is a hallmark of the HammerHead piercing tool design. This feature provides up to 200 percent more clamp load than competitive models and is the most secure assembly on the market. STRIKER WEAR RINGS The one-piece striker contains a set of wear rings that eliminate metal-to-metal contact, providing a sustaining level of performance. PUSHING COLLETS HammerHead ramming tools are set into taper-locking collets, decreasing set-up and tear-down time. The collets offer a full 6" (152 mm) of engagement to the steel casing resulting in a secure locking of the tool nose to the casing, eliminating the need for a support cradle and reducing casing flare which helps save time on the job. COLLET LIFTERS On larger sizes of collets, Hammerhead offers collet lifters to conveniently move, load and unload heavy collets on-site. ACCESSORIES HammerHead offers a wide variety of pipe-ramming accessories, like lubricating systems, seal kits, balanced collet lifters, pipe pigs and ram collars. All designed to make your next job more efficient. Similar models may be shown in addition to the featured model. Equipment may be shown with options. Specifications are subject to change without prior notice.