How much lubricant do I need for a ROK hammer?

The minimum amount of rock drill oil required for the operation of all ROK Series and ROK T Series DTH hammers is 0.2 l/hr per 3.0 m3/min (1/3 pint/hr per 100 cfm). Pneumatic rock drill oils are the only acceptable lubricants for DTH hammers. In ambient temperatures of 80 Fahrenheit (27 Celsius) or higher, use SAE 50 rock drill oil. Exxon

Can I use DTH bits on a ROK T Hammer?

We recommend using DTH bits in good condition. Avoid using DTH bits that are overrun, as this will alter your drilling penetration rates and can cause premature wear on various components of the hammer. (When using a ROK T hammer it is important to REMOVE the blow tube/foot valve.

How do you disassemble a hammer?

When disassembling the hammer, place the clamps of the break-out bench or drill rig in the Clamping Zones. The Clamping Zones are clear of the threads and of the piston bore. Placement of clamps on any other section of the Wear Sleeve can cause severe damage, alter drilling performance, and will void any warranty.

How do you use a DTH hammer?

Rotate the hammer clockwise at approximately 30-rpm. The DTH bit will now push into the Driver Sub and percussive action begins. When the hammer is lifted from the rock face, the DTH bit extends from the Driver Sub and percussive action ceases. Extra air will pass through the hammer, which can be used to flush the hole clean.