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Tech Notes, Volume 1, Issue 2

June, 2010


Bel-Ray No-Tox Hi-Temp Oil 220

One of the most critical lubrication applications in a baking facility is the oven chain. To meet the high temperature requirement of the oven chain, Bel- Ray is pleased to launch the new NSF H1 registered food grade, biodegrad­able, synthesized hindered polyol ester-based product for oven chain lubrica­tion – Bel-Ray No-Tox Hi-Temp Oil 220. The NSF H1 registration number is 142894. Synthetic ester based oils have long been considered the best chemistry for high temperature applications but until recently there are not many such products on the market that could meet the NSF H1 food grade lubricant criteria. Beyond the bakery oven chain application, there are many oven chain applica­tions that require high temperature synthetic ester lubricant. Those oven chain applications are core-oven trolley wheel bearings, oven and furnace exhaust fan bearings, calendar stack bearings, lithographing oven chains and sprockets, ten­ter frames, lehrs and glass forming equipment, paint bake ovens, ceramic curing ovens, fiberglass oven chains, etc.

As an ISO VG 220 synthetic oil, Bel-Ray No-Tox Hi-Temp Oil 220 is also suited for application in spur, helical and planetary gear units, couplings, rolling and sliding bearings. The biodegradable feature of Bel-Ray No-Tox Hi-Temp Oil 220 makes it suitable where a biodegradable and non-toxic lubricant is required.

Bel-Ray No-Tox Hi-Temp Oil 220 is designed to provide the following benefits and advantages:

  • Formulated with synthesized hindered polyol esters and performance addi­tives.
  • A NSF H1 food grade lubricant - food safe, odorless, tasteless.
  • Contains EPA registered and FDA approved anti-microbial agents and effec­tively inhibits the growth of certain bacteria, yeast and mold in the lubricant.
  • Has over 65% biodegradability by ASTM D5864 (OECD 301B) test.
  • Rated as a CLP gear lubricant according to German DIN 51502 standard.
  • Performs well at temperature up to 260ºC (500ºF).
  • An ashless fluid that upon evaporation leaves no sig­nificant residues.
  • Non-carbonizing - contains no petroleum oil.
  • No sludge or deposits left behind as with products containing molybdenum disulfide, graphite or other solid lubricants.
  • Does not contain any volatile organic compound (VOC).
  • Increased fire safety with very high flash and fire point.
  • Corrosion protection for both ferrous and non-ferrous metal.
  • Gives maximum lubrication protection with a mini­mum of consumption - extends lubrication cycles.
  • Lasts longer and goes further, while it outperforms petroleum oil and other synthetic lubricants.

As an oven chain lubricant, Bel-Ray No-Tox Hi-Temp Oil 220 can be easily applied by methods of brush, oil feeder, automatic lubrication systems. When applied in automatic lubrication systems, the suggested lubrication method is applying the oil every day for 15 minutes. Due to the very low residue build-up and self-cleaning property of the Bel-Ray No-Tox Hi-Temp Oil 220, there is no need for chain cleaning. This leads to savings on downtime since cleaning is no longer necessary. Lower friction and residue formation result in a reduc­tion in oven chain amperage, which leads to a reduc­tion and subsequent cost savings in energy consumption. The fact that there is no smoke generation helps to protect and enhance the working environment.

Bel-Ray conducted a comparison of the properties and performance of a competitor’s H1 220 oil which is the leading seller in the market. Results are shown in the table. Our findings were that:

Bel-Ray product has significantly better anti-wear • properties than the competition as shown by the Falex Test results, meaning less wear and longer component life.

Bel-Ray product has much better viscosity-temper­• ature profile and high Viscosity Index than the com­petition. The product with high VI ensures maxi­mum performance over a wide operating range.

Although Bel-Ray product has slightly higher evapo­• ration losses than the competition, loss 7.2% at 232ºC (450ºF) is considered low for high tempera­ture lubricants.

Pricing against value will mean Bel-Ray will once again prove to be superior to the competition.



What Exactly Do The Multi-Visc Designations Mean?

Have you every wondered what does 10W-30 or 20W- 50 mean?

Many people think 10W-30 means that when the oil is cold it has the viscosity of a 10 weight oil and when the oil is hot is has the viscosity of a 30 weight oil. How could you have oil that’s viscosity worked exactly opposite of the physics of the liquid. Oil viscosity is inversely propor­tional to temperature, as the temperature of the oil goes up the viscosity goes down.

Oils with 10W-30 and other similar designations are referred to as multi-viscosity oils.

The W stands for winter not weight and there is a standard called the SAE Viscosity Grades for Engine Oils – SAE J300. To label multi-viscosity oil 10W-30 or any of the other multi-viscosity grades, the oil must conform to stringent test parameters performed at low temperatures and high temperatures.

The W or winter number is important for low tem­perature performance. Referring to the J300 table, to list a multi-viscosity oil as a 10W the Cranking (cP) max at temperature of -25C (-13F) can not be higher than 7000 and the Pumping (cP) max with no yield stress at tempera­ture of -30C (-22F) can not be higher than 60,000. As you can see from the table, the lower the W number the lower the Cranking (cP) at lower temperatures. This means that when your engine is cold the lower the W number the easier the oil will flow.

Now lets look at the high temperature test requirements, we will look at the 10W-30 again. The minimum viscosity of the 10W oil at 100C (212F) is 4.1 cSt. Now comes the chemistry magic. We need the 10W-30 oil to provide the high temperature viscosity of SAE 30 oil. The chemists use additives called viscosity improvers that expand as the temperature increases providing the viscosity necessary and when the temperature cools back down the viscosity improvers shrink. You can think of viscosity improv­ers like a slinky, as the temperature increases the slinky opens up increasing the viscosity. The minimum viscosity of the 30 oil at 100C (212F) is 9.3 cSt and the maximum viscosity has to be <12.5 cSt. The final high temperature test is the High Shear Rate (cP) at 150C (302F) minimum. The high shear test minimum for the 30 oil is 2.6 (cP) this means that the oil must not shear down ( or allow the viscosity improvers to get chopped up) more than the stated amount during the test.

Now you know what the multi-vis­cosity oil designa­tions mean.

Bel-Ray offers a full range of high performance Power­sports products.


Grease-Type Open Gear Lubricants

While lubrication is not the sole answer to all mechanical problems, the simpler the application of lubricant becomes, the greater the chance of an uninterrupted and smooth running operation.

Therefore, in response to industry’s needs for multi-service products, the “one lubricant for everything” concept emerged. As a result, grease-based open gear lubricants were developed several years ago to meet the demanding service requirements of mining and mine-related equipment. In addition, the more recent environmental and waste disposal needs of users and government legislation fostered wide spread acceptance of this type of lubricant within the mining communities.

In general, the multi-service lubricant must have the following features:

Tackiness - the lubricant must be tacky in order to cling to the gear teeth. It must not be wiped or squeezed off by the meshing teeth, washed off by rain or flung off centrifugally. It should remain adequately pliable within the temperature range of the application. The lubricant should be adhesive (lubricant sticking to the gear surface)and cohesive (lubricant sticking to itself). For optimum coverage, the lubricant must have a balance between adhesion to the gear tooth surface and cohesion such that strings of the lubricant continually replenish the film as the meshing teeth part.

Load carrying capability - because the large, slow-moving open gears are usually heavily loaded, the lubricant must have good Extreme Pressure and anti-wear properties as there are impact, sliding and rolling forces exerted on the gear teeth throughout the mesh process. In this way, the lubricant reduces both wear and friction on the gear teeth and results in lower energy consumption.

Protection - the lubricant must protect the gears primarily against rust and corrosion as well as lubricate them under a variety of unfavorable situations, such as dirty or dusty conditions. It must endure wide temperature variations.

Cushioning capability - the lubricant must reduce vibration between the gear teeth and consequently reduce noise during operation.

Sprayable - such that application of the lubricant would be facilitated.

Lubricants possessing these characteristics provide a persistent lubricating film on the gear teeth that protects against wear and permit; long periods between lubricant applications. In the case of a solvent-free grease based product, a reduction in the base fluid viscosity is unavoidable and is required to maintain the sprayability and pumpability of the product, especially at lower temperatures. As a result, it is important with a solvent-free grease based product to consider the requirements for developing an adequate lubricant film on the surface of the gear under the severe operating conditions in mining operations. ISO Viscosity Grades 680 and higher are preferred for grease based products thickened with aluminum, lithium, calcium complex soaps as well as clay and polyurea.

This would ensure that the lubricant adhered to the gear surface at higher temperatures but was also pumpable at low application temperatures, i.e. the lubricant has a good consistency-temperature relationship. In addition, for a multi-service product which is used to lubricate both the bearings/bushings and open gears, the base fluid viscosity should not be too high for lower energy consumption during operation.

Recommended Bel-Ray products include:

  • Bel-Ray Molylube SF-100 (5) grades
  • Bel-Ray Molylube SF-100 0G
  • Bel-Ray Molylube SD-1 Lubricant
  • Bel-Ray Molylube Unee Lubricant 7060
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