CHOOSING THE RIGHT TOOL FOR THE JOB

Quality you can Count on

By their very nature, hydraulic hammer tools are required to work in some of the most arduous and abrasive conditions known to the demolition and mineral extraction industries.

To prepare Rammer tools for life at the sharp end, all Rammer Hammer Tools are heat treated for maximum strength, durability and resistance to wear. To maintain optimum quality control, this critical heat treatment process takes place in Rammer's own facility, located adjacent to the Lahti Hammer factory.

Maintenance - Greasing the Tool

Correct greasing of the hammer tool is an operation that is often overlooked, but is a vital part of hammer maintenance. While the hydraulic oil within the hammer powercell creates the hammer's power, it also lubricates the internal parts of the hammer. However, it does not lubricate the tool area, this has to be done manually, or with an automatic greasing system. The life of your tool depends on regular and correct greasing procedures.

Manual Greasing

Recommendations for manual greasing frequency and quantities are given in the operator's manual where it states that five to ten strokes of the grease gun should be applied every two to four hours.

However, these are only guidelines, you will need to vary your greasing to suit each different operation. If, for example, you are working in an environment with a great deal of thin abrasive dust, then the frequency needs to be shortened dramatically and special attention paid to the type of grease you use. The maxim "little and often" is the best rule in this type of condition. Greasing every 30 minutes, but with smaller quantities helps extend tool life.

Automatic Greasing Systems

Whilst an automatic greasing system does the greasing for you, caution should be exercised when choosing one. Some are not able to pump hammer grease or will deliver the wrong quantity.

It is strongly recommended that you use the system supplied by your hammer manufacturer.

Even when you have an automatic system fitted you can not assume that it is working properly - it still needs to be checked regularly for correct operation. Visually check that grease is covering about five centimetres of the tool outside the bushing. If the tool is totally covered in grease or it is coming out of the air channel hole in the valve housing too much is being applied.

In tunnelling operations we recommend that an automatic greasing system is fitted in conjunction with a small air compressor fitted to the air channel in the valve housing. The increased air pressure between the piston and tool keeps dust out and helps lubrication.

No two operations are the same and you will need to vary the greasing intervals to suit the job. If you suffer frequent tool breakages or find bad scoring on the tool surface you should check your greasing intervals and type of grease.

Specifivcation Of Hammer Grease

Maximum service temperature must be at least 150°C (300°F)
Minimum working temperature must be below lowest ambient temperature
Additives should include molybdenum disulfide (MoS2), graphite or equivalent
Penetration should be 0 -2 (NLGI)
It should have no reaction with hydraulic oils
It should be water resistant
It should have good adhesion to steel

We recommend using original Rammer tool grease, in a cartridge under part number 902045 or in an 18 kg barrel under part number 902046.