The Mincon MP4H-DH is a 4 in. class down-the-hole hammer for rig-mounted percussion drilling of 4.3 to 5.1 in. (110130 mm) holes in construction, quarrying, mining and well drilling. Built in Mincon’s Irish and Finnish factories, the MP40 range runs 85 to 96 lb by variant with a 16 to 18 lb piston, a 2-3/8 API backhead thread and a 3.9 to 4.0 in. outside diameter.
Three shank variants match the bits already in your inventory: the MP4H-DH for DHD340 shanks, the MP40-TD for TD40, and the footvalve-free MP40-MQ for tubeless bits. Keep matching DTH drill bits on hand and meter rock drill oil into the air line to protect the piston and chuck; the DTH hammer buyer’s guide walks through sizing hammer, bit and compressor to the hole.
- Bit range 4.3 to 5.1 in. for 110 to 130 mm holes in construction, quarry, mining and well drilling
- Shank support variants: DHD340 (MP4H-DH), TD40 (MP40-TD) and MQ40 (MP40-MQ)
- Hammer outside diameter 3.9 to 4.0 in.; 2-3/8 API backhead thread
- Tool weight 85 to 96 lb by variant; piston weight 16 to 18 lb
- Foot valve fitted on DHD340 and TD40 variants; MQ40 variant runs footvalve-free tubeless drill bits
- Manufactured at Mincon’s facilities in Ireland and Finland to ISO specifications with proprietary heat treatment
- Stocked by Crowder Supply in Denver alongside matching DTH bits and rock drill oil
