A plenty of technical showing data and treatment is offered by most bearing companies. Should you be like myself, you simply are deprived of the time, patience, or interest, within wading through all of this details, with cost usefulness being unsupported by simply the frequent want to outsource impact maintenance, but however have an fascination in running cost reduction for the tree stump grinder. Alternative bearings cost above �100 each, in addition to represent a big portion of overall device maintenance costs. This guide is meant for individuals who desire to reduce cost by improving bearing service life. Bearing failure or premature bearing wear upon stump grinders will be mainly due to be able to inadequate maintenance associated with clean lubricant. We use a pneumatic grease dispenser driven by an compressor at each days end of stump grinding, with some sort of grease top up, out in the field, using a conventional hand-held grease push. I prefer a great deal of oil but it is far less expensive than replacement bearings. After i re-grease bearings, I thoroughly clear out the contaminated grease, until clean sauces exudes from the particular bearing. A top shedding point EP-2 grease is essential. I prefer a molybdenum disulphide (moly) enriched EP-2 complex grease since it is a heavy-duty sauces. So, to total up this paragraph, there are about three principles of making the most of bearing life insofar as lubricants have concerns: select the proper oil apply the correct grease properly e. g on the correct variety re-grease frequently An additional common reason intended for premature bearing use on stump mills is inadequate or perhaps incorrect bearing adjusting ( for those machines with the changeable bearing wear takeup) Now, I understand how awkward accessing bearings for adjustment, may be on stump grinders. I made up some specialised tools out of allen keys, owing in order to their tough, higher quality steel content material, as a function around to the particular awkward access difficulty I have on my grinder. I basically ground away overabundance of material with some sort of bench grinder to be able to shape an allen key in a right-angled punch. If you are comfortable doing this, please be sure to frequently cool the allen key in water. Perform not let this turn blue throughout colour. I are derived from an engineering history, and accept that lots of who may check out this, do not. A lot of may feel this specific being somewhat out there of their detail. This is exactly why I'm making this effort in order to avoid trifles as much as possible with emphasis on minimum prominent points. I'm not conversant with bearing access configurations upon all brands involving stump grinders, but I can not over importance how, with some sort of bit of motivation and determination, the significance to overcome a bearing access is actually. It will preserve you money. The particular detection and analysis of premature bearing failure is simply by its nature the technical subject including specialised equipment e. g. heat receptors, vibration sensors, infrared sensors, oil and ultrasound analysis equipment. All of this equipment generates significant amounts of data, will be very costly, and totally impractical away in the discipline. A non specialized tree stump grinder who may be dependent upon the continual functioning of his stump grinding machine can easily shy away from this kind of situation. The easiest, most practical in addition to non technical approach to roughly monitor bearing performance is definitely to rest your hand on the pillow block bearing following running it regarding a reasonable length of time, claim one or more hour. In case you must eliminate your hand since the bearing is as well hot, this shows a worn bearing. Adjustment to take up extreme play in the keeping be made according to manufacturers instructions. In the event the sound of a bearing knock or perhaps rumble is likewise heard, this usually implies it is exceedingly worn and needs replacement. For these who my have an interest, there are 4 stages of showing failure which I actually will touch about, as it will get involved and even is not inside keeping with this specific scope and its objective.: Stage a single. Vibration analysis picks up the earliest sign of bearing failing. Signal data appears in the ultrasonic frequency range band around 250 in order to 350 Kilo Hertz.. At this point there is definitely about 10-20 % remaining bearing life. Stage 2 . Showing failure begins to ring at its normal frequency (500 : 2000 Hz) At this stage there is your five to 10% bearing life left. Period 3. bearing malfunction harmonics are noticeable with defects found in the inner and outer races. Heat increase is now apparent with 1 to be able to 5% bearing living left Stage 5. High vibration is definitely clear with random ultrasonic noise greatly increased, temperature raises quickly. One hours to 1 percent remaining life. It is usually unfortunate for all stump grinder operators, of which by the moment a bearing knocks and bumps, rumbles, or significantly gets hot, it will be shortly on its way to be able to failure. There is no practical way for the average owner and operator to accurately judge the length of serviceable time remaining in a stump grinders bearing while out in the field. Out of this viewpoint, I am making an attempt to try to collect some useable data in the field, which usually may demonstrate to be a new practical and affordable approach to monitor showing serviceability. I can be installing thermocouples (heat sensors) to the bearings. If the running average temp gradient may be established, it may confirm helpful to these stump grinders that are interested in maximizing their machines keeping life, by simply changing up their bearings, when its temp rise indicates time frame to do thus. This will require certain effort for all those interested. They as well might need to suit thermocouples to their own bearings to monitor temp as the only cost-effective, and useful way to know any time to adjust upward their bearings. This effort will probably be completely negated if the strict and sufficient re-greasing program is not preserved. What will be the point of regular, on time, bearing adjustments, in case the bearings regularly leaped in a bed of contaminated oil. I do believe the reader will agree, is a total waste of resources and effort.
