7-ton Frost-Law Modification

Popular Schwing Pump Gets 7-ton Frost-Law Modification

Modifications now available will allow users of Schwing’s popular S 38 SX truck-mounted concrete pump to get a jump on the early spring construction season in states with seven-ton and frost law restrictions — Minnesota, the Dakotas and Michigan, for example. The changes, which include the addition of a pair of lift axles, will open the door for the hugely successful S 38 SX to access roads which were previously off-limits in early spring, according to Rick Seelnacht, Schwing’s chassis group manager.

“For years we’ve been making these modifications available on smaller sized pumps,” he said. “However, largely because of technology-driven benefits the S 38 SX offers, that model has been in demand — and one of those demands has been for a model with frost-law compliance. To make that happen, we use a pair of properly-placed caster-steer lift axles to disperse the load, reducing the amount of ground pressure — weight which would otherwise be placed solely on the steer and drive axles. Doing so allows us to meet the seven-ton/frost law criteria.”

Some of the technology to which Seelnacht refers, includes a five-section boom which hyper extends at every section to exceed the capabilities of a traditional roll and fold or Z-boom. All of the articulation is on the working side of the boom for faster deployment and the end hose can be easily snaked deep into decks. The boom provides 106’11” of horizontal and 122’4” of vertical reach. Also standard in every S 38 SX are Schwing’s exclusive Super X-style outriggers which telescope out and around jobsite obstructions. For tight set ups, the outriggers can be deployed on one-side only, using the standard EASy Flex system that narrows the footprint and provides up to 210-degrees of boom rotation on the pour side of the pump.

“Once the S38 SX was introduced, we immediately started working on ways to best deal with weight distribution, so that when customers decided they wanted a frost-law compliant machine, we would have it available,” said Seelnacht. “That’s where we are today.”