5" DTH Hammer - VD55S x 112

5" High Pressure DTH Hammer - VD55S x 112

The VD55S x 112 is a 5 inch high pressure down the hole hammer built by Vikay Mining Equipments in India. At 112 mm outer diameter and 57 kg over a 1,070 mm length it is the larger of the two 5 inch hammers, using the D50 bit shank with a 3 1/2 inch API regular pin coupler. It takes bits from 5 to 5 3/4 inch and runs on 350 to 940 cfm at 150 to 350 psi. No foot valve is required.

Technical Details  

VD55S x 112 DTH Hammer FAQs

Will the VD55S x 112 fit my drill string?

The VD55S x 112 uses a 3 1/2" API coupler thread, so it fits any string cut to that thread. Check the thread on the string already in use before ordering, because that is what decides it rather than the hammer size.

What hole will the VD55S x 112 drill?

The VD55S x 112 is 112 mm across, 1,070 mm long and 57 kg. It is a 5 inch hammer, so it is matched to a 5 inch hole and fitted with a bit of that size.

Which size of DTH hammer do I need?

This page is the VD55S x 112, a 5 inch hammer, 112 mm across and 57 kg. The size is the hole. Vikay manufactures 4 inch, 5 inch, 6 inch, 8 inch and 10 inch down the hammers, and the hammer is chosen to match the hole diameter being drilled, then fitted with a bit of that size. The larger hammers need proportionally more air, so the compressor on site is the practical limit on how big a hole can be drilled.

See also: VD40D x 98, VD50S x 106, VD60D x 148

What air pressure does the VD55S x 112 need?

The VD55S x 112 works at 150 to 350 psi. Down the hole drilling is volume hungry, so on most sites it is the compressor that limits the hole, not the hammer.