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The patented clamp portion of the compactor has been used with backhoe mounted air hammers for years and is well proven. It has two 10" long bearing bars which contact the underside of the bucket. The upper portion has an element with opposing bearing bars and it moves in a vertical slot and has enough ability to rotate to compensate for variation in bucket thicknesses at the contact points. There is a built-in handle for tightening the clamp and a pin lock to prevent loosening. The compactor has two sealed, self-aligning ball bearings, each rated at over 11,000 lbs working load.
Use on backhoes or loaders that can apply a downward force of up to 15,000 lbs should be satisfactory, however, in rocky fill where one bearing might frequently be subjected to the full force, an 11,000 lbs limit should be used. The bearings are at each end of the axle. Keep in mind the fact that the weight any tractor-loader-backhoe, or loader, may apply to the compactor is probably only in the range of 40% to 60% of the machines gross weight.
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