Robco Expert

System Flushing is a bit of tricky business. In oil circulating systems, dirt, varnish, lacquer and sludge cleaned from the systems will become partially soluble in a flushing lubricant and can be carried to filters and oil pump intake screens. These should be closely monitored to assure continued oil flow. Deposits are also likely to settle to the lowest point of the oil reservoir. Large capacity, bypass or inline filtration is recommended during cleanup for many dirty systems since the standard filters lack capacity and can quickly plug. The Big Question is: When do we need to flush and when do we not need to flush an oil system? This is the question that many maintenance managers, planners and lubricant specialists have trouble deciding upon. Here are the main reasons to do an oil system flush: Does the oil analysis show signs of contamination due to water? Does the oil analysis show signs of metal wear in it? Has the Total Acid Number (TAN) incre...

TENIR COMPTE DE L'EXPANSION ET CONTRACTION THERMIQUE LORS DE L'USINAGE DU NYLON Thomas Cipriani – Product Specialist at Robco Lorsque l'on travaille avec du nylon, nous devons comprendre qu'il réagit aux fluctuations de température. La meilleure procédure à suivre lors de l’usinage du nylon en usine est de le découper à une température d’environ 24°C; si nous ne le faisons pas, nous risquons d'avoir des problèmes dimensionnels après coup. Le nylon étant un plastique thermique, il se dilate lorsqu'il est soumis à des températures plus élevées et se contracte à des températures plus basses.  Toujours prendre la température d'installation en considération.  Voici une formule de travail pour vous aider lorsque vous souhaitez usiner des pièces à base de nylon: Voici quelques exemples: > A) Exemple d'expansion: En installant à 78°F, la température maximale de fonctionnement peut atteindre 150°F et la pièce mesure 120" de long 150° - 78° = 72° de change...

TAKING INTO ACCOUNT THE THERMAL EXPANSION & CONTRACTION WHEN MACHINING NYLON Thomas Cipriani – Product Specialist at Robco When working with Nylon material, we must understand that it reacts to temperature fluctuation. The best procedure to follow when machining Nylon at the factory is to cut it to size at a temperature of about 75°F; if we don't, then we risk having dimensional issues later on. Nylon is a thermal plastic, hence it will expand when subjected to high temperatures and contract at low temperatures. Always take into account the installation temperature. Here is a working formula to help you when machining Nylon based parts: Here are some examples: >A) Expansion Example: Installing at 78°F the maximum operating temperature can reach 150°F and the piece is 120” long: 150° - 78° = 72° temperature change 72 x 120 x .00005 = .432” expansion >B) Contraction Example: Installing at 78°F the lowest operating temperature could reach -200°F and the piece is 120” long: 7...

OVER GREASING KILLS BEARINGS  by: Red Ops / Robco ·      Overfilling bearings with grease is the most common cause of bearing failures. ·      Too much grease in the cavity/bearing will cause more friction to run the bearing and that will result in an increased temperature to levels above the drop point of the grease: oxidation will occur and both the grease and bearing will prematurely fail! ·      Follow the instructions of the bearing manufacturer for greasing quantities as per bearing type and size. ·      Take into consideration the environment, temperature and operating hours.   OVER GREASED BEARINGS PROPERLY GREASED BEARINGS

  What does “K” factor mean for Insulation? Thomas Cipriani – Product Specialist at Robco The K factor expresses the amount of heat transferred by a chosen material at a specific temperature. The higher the temperature, the higher the amount of heat is transferred. To determine the K Factor, we use the Thermal Conductivity rating of the material or ability to conduct heat. Usually, insulation materials have a K Factor of less than one. The lower the K factor, the better the insulation. HOT face / COLD face: Exposed side / absorbed heat. When we know the temperature of exposure and the Thermal Conductivity of the material we can determine the temperature on the outside of the insulation that will be exposed. _____________________________________________________________________ Que signifie le facteur « K » pour l'isolation ? Thomas Cipriani - Spécialiste produit chez Robco Le facteur K exprime la quantité de chaleur transférée par un matériau choisi à une...

  Thomas Cipriani – Product Specialist at Robco DEMYSTIFYING BIODEGRADABLE LUBRICANT TERMINOLOGY! What Does “Biodegradable Lubricant” Really Mean? The O rganization for E conomic C ooperation and D evelopment (OECD) developed a testing standard to determine the biodegradability of a product: OECD 301B. There are 2 classes; A) Readily Biodegradable > The product is able to biodegrade to its natural state after being subject to sunlight, water and/or microbial activity to a percentage of no less than 60% within 28 days. Readily Biodegradable lubricants are made with vegetable or canola base oils and are blended with synthetic esters. B) Inherently Biodegradable > The product is able to biodegrade to its natural state after being subject to sunlight, water and/or microbial activity to a percentage of as low as 20-60% within 28 days. They are most commonly used in sensitive areas requiring a “passing grade” on aquatic animal tests. They use additive chemistry contain...

  SELECTING AN OIL FOR A GEARBOX!   Thomas Cipriani – Product Specialist at Robco When selecting what oil to put into a gearbox we must consider 2 key items: Gear m etallurgy OEM spec ifications r equiring an oil with additives for : Extreme Pressure Rust & Oxidation W ith m etallurgy, t he main concern is with yellow metals (copper, bronze, etc..) Extreme Pressure o ils CANNOT be used as they will attack ing yellow metals. The gearbox OEM specs wi ll call for an oil with either Extreme Pressure additives (meant for heavily loaded bearings) or an oil with Rust & Oxidation additives (most commonly used in gear reducers). The wrong oil in the gearbox will cause premature failure of the gears, so please make sure to verify before switching or selecting your gearbox oils!

Top 12  Performance Advantages of Using Royal Purple with Synerlec Additive Technology Thomas Cipriani – Product Specialist at Robco Higher Film Strength > allowing it to reduce wear by carrying loads 5 times greater than other premium synthetic and mineral oils. All equipment runs on a very thin film of oil ...the tenacity and toughness of the Synerlec film greatly reduces wear and extends equipment life. High Temperature Stability > due to it’s Synerlec additive technology and it’s PAO base oil it enhances the oil’s capability to withstand higher temperatures for longer periods. Low Friction Coefficient > due to it having a tenacious, tough, synthetic film that allows surfaces to “perfectly mate” through controlled polishing of the micro-asperities. Smoother surfaces reduce friction, vibration and lower “unit pressures” (psi) to extend equipment life. Superior Water Separation > allowing the oil to separate rapidly from water to remain dry. Dry oil gr...

  6  Things to know and do  before and after making a switch from one grease to another Thomas Cipriani – Product Specialist at Robco Verify what the OEM specifications state for type and NLGI grade of grease that you should be using in your application. Verify if what you are using meets those specifications Find suitable grease options that meet the specifications in order to switch to the proper grease option. Compare the suitable greases by comparing their results in the key grease tests; such as Timken OK load, 4-Ball EP Load-wear index, 4-Ball EP Weld Point, 4-Ball Wear-Scar Diameter, Drop Point, Pour Point, Operating Temperature capability, Water Washout Test Result, etc... Once you have selected the grease you would like to switch with verify if it is compatible with the one in your system to be sure on how much you must purge the system. The worst thing you can do is put one grease on top of ...