SD12 DTH hammer

SD12 DTH hammer

12 inch DTH hammer is kind of pneumatic rock drilling tools, the difference from others is during drilling process hammer always stay in the bottom of the hole, impact the rock by bit from hammer directly. High pressure air enter into the hammer through drill pipe, then run out from drill bits, exhaust air used to blow up cuttings from the bottom of hole. The rotating power acting on DTH hammer comes from rotaion motor on the drill rig, the pull force comes from feeding device and transfer the energy to hammer through drill pipe.

Product Description

SD12 DTH hammer for well drill

SD12 DTH hammer/DHD 120/Numa 120

KING KONG brand DTH Hammers are faster, more service friendly and longer lasting, compared with most drilling products in the market.

The optimal performance of LEANOMS DTH Hammers includes:

1. High productivity.

2. Longer service life.

3. Low energy consumption.

Effiency increase by 20%-30%, which means the higher drilling output will deliver maximum profit for you.

KING KONG brand DTH Hammer Types coverage: DHD/COP/HD/IR/TD/COPROD/QL/SD/Mission/Numa/Mach etc. Size range: 2”-24”


Mining, quarrying, water well drilling, geothermal well drilling, foundation piling, etc

SD12 DTH hammer

SD12 DTH hammer basic structures

SD12 DTH hammer components: Piston, internal cylinder, air distributor, check valve and drill bit accessories are installed in the external cylinder, the external cylinder has the top sub connected with it is connection thread and wrench, there has a drive chuck threaded to the other end of cylinder. There is spline in the drive chuck which is mainly used to transfer feeding and rotational force to the drill bit. The stop ring contros the axial movement of the drill bit, and the check valve is used to prevent cutting and other foreign materials ingress into hammer in case of air supplying is stopped.

During drilling, the drill bit is pushed into the hammer and pressed against the drive chuck, where the piston directly impacts the drill bit for crushing rock. Hammer start to clean the bottom by blowing up when bit lift from the hole.

SD12 DTH hammer

SD12 DTH hammer


SD12 DTH hammer

  • The technical support team may provide remote or on-site support to resolve issues encountered by users during use.
  • Provide original spare parts to ensure timely replacement of worn or damaged parts to maintain the normal operation of DTH bits.
  • Timely information reply throughout the day, the first time to solve your problems.

SD12 DTH hammer


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