DTH Drill Hammer

Our commitment gives our customers the peace of mind that we’ll always be there with the industry’s best performing, most reliable DTH rock drilling products and the industry’s best service and support.     

Leanoms produces our reliable, high-performance DTH bits and hammers. We pride ourselves on our dedication to providing the drilling industry with the highest value in products, performance and service in the industry.

 Before beginning to drill, there are several factors that must be taken into consideration in order

to select the appropriate down hole hammer. Consider the following:

1. Hole Size: In most instances, the outside diameter of the hammer closest to the hole

size being drilled should be used for most efficient drilling. This reduces the instance

of hole collapse and makes cleaning the hole easier. One needs to take into account

that there must be sufficient annular area around the Numa Hammer to pass the drilled

cuttings. This normally will supply the most efficient operating conditions. The Hammer

Selection chart on the following page displays Numa Hammer and their corresponding

bit range.

2. Air Consumption: The amount of compressed air available must be taken into

consideration when using a down hole hammer. Different size hammers require

different volumes and pressures in order to properly operate. Generally, as the size

of the hammer increases, higher volume and lower pressure is needed for peak

performance. Be sure to refer to the Air Consumption chart or your maintenance

manual for the proper air consumption for each hammer.

3. Rig Capacities: The larger the bit and hammer, the greater the rotational torque and

feed/pull back requirements become. Do not exceed the drill rig's capacity. Please

consult your drill rig manufacturer with any questions on rig capacity.