Search Company Products Services Resources News & Events Contact 3 PRODUCTS BY CATEGORY BY INDUSTRY BY APPLICATION Ball & Lead Screws Bearings Control Cables Connectors Gears Landing Gear Sensors & Potentiometers Slides Switches BY BRAND Gears The rolling and sliding actions which occur in all types of gearing, such as spur, helical, worm, spiral bevel or hypoid, present a different type of challenge to lubricants compared to ball or roller bearings. Many designers, especially worm gear designers, are interested in increasing gear box efficiency. Modern designs require the most in power transfer with minimal noise and heat generation. In some cases, oils are being replaced by specially designed synthetic greases to reduce component cost by eliminating the need for seals and the machining costs associated with oil seal designs. Other gear train designs may have special operating environments including high and low temperature, corrosion and oxidation concerns. With modern lubricants, these challenges can be met very effectively. Utilizing various synthetic base oils and gellants these lubricants not only minimize friction but can inhibit wear and corrosion, dampen noise and control free motion. They can meet broad temperature requirements without oxidizing or evaporating. And they can provide manufacturers of today’s power transmission devices with an “edge” that will increase the performance and life of their products. Rheolube® 380 & 380-G1 was formulated to reduce friction and wear, extending the life of a gear box. Synthetic vs. petroleum-based lubricants. In theory, the “perfect lubricant” won’t oxidize, suffer thermal breakdown, evaporate or allow surface contact for the life of the device. Generally ambient temperature range plays a major role in determining whether to use a synthetic or petroleum-based lubricant. Synthetics tend to function better at wider temperature ranges than petroleum products. Petroleum products begin to degrade at or before 100°C, whereas synthetic hydrocarbon lubricants function well to 125°C. By comparison, UniFlor™ fluoroether lubricants provide excellent lubricating qualities to 250°C. Synthetics offer extreme low temperature advantages as well. Synthetic lubricants have lower vapor pressures than petroleum products, consequently, even without the presence of oxygen, synthetics are less volatile, an important factor in ensuring that the lubricant does not breakdown. In summary, the chemical homogeneity of synthetic lubricants results in greater load carrying capacity, higher viscosity indexes, better lubricity, greater efficiency and extended serviceability than their petroleum-based counterparts. Our Products A partial list of the most commonly used Nye synthetic lubricants for gear applications. General Purpose Gear Greases Base Oil Chemistry Temperature Range (°C) ISO Viscosity Grade Base Oil Viscosity @ 40°C NLGI Grade Dropping Point (°C) Consistency INSTRUMENT GREASE 794A PAO/Ester -20 to 150 460 440 2 260 Medium NYOGEL 788 PAO/Polybutene -20 to 125 460 291 1 Over 350 Medium/Soft NYOGEL 792D PAO -30 to 125 150 182 260 Semi-fluid RHEOLUBE 363AX-1 PAO -50 to 125 46 40.7 2 220 Medium RHEOLUBE 368AX-1 PAO -20 to 125 220 259 2 255 Medium RHEOLUBE 368SM PAO -40 to 120 220 243 0.5 200 Very Soft RHEOLUBE 377AL PAO -40 to 125 46 45 1 194 Soft RHEOLUBE 380 PAO/Ester -50 to 130 32 33.6 2 194 Medium RHEOLUBE 380-G1 PAO/Ester -50 to 130 32 37 1 190 Soft RHEOLUBE 723GR PAO -40 to 125 68 80.6 0.5 205 Very Soft High Temperature Gear Greases Base Oil Chemistry Temperature Range (°C) ISO Viscosity Grade Base Oil Viscosity @ 40°C NLGI Grade Dropping Point (°C) Consistency UNIFLOR 8511 PFPE -50 to 225 68 65 2 Non-melting Medium UNIFLOR 8531 PFPE -40 to 225 220 230 2 Non-melting Medium Flea-Power Gear Grease Base Oil Chemistry Temperature (°C) ISO Viscosity Grade Base oil Viscosity @ 40°C NLGI Grade Dropping Point (°C) Consistency NYOGEL 741E Phenylmethyl Silicone -50 to 200 150 151 000 223 Semi-fluid Food Grade Gear Grease Base Oil Chemistry Temperature (°C) ISO Viscosity Grade Base oil Viscosity @ 40°C NLGI Grade Dropping Point (°C) Consistency FLUOROCARBON GEL 800 Ester -35 to 150 100 104.5 2 300 Medium FLUOROCARBON GEL 800GR-1 Ester -35 to 150 100 104.5 1 306 Soft UNIFLOR 8931 PFPE -70 to 250 320 310 2 Non-melting Medium NYOGEL 670F PAO -35 to 120 220 194 2 Non-melting Medium Related Technical Articles & White Papers GEARS: Study of Wear Properties of Environmentally Friendly Lubricants The purpose of this study is to examine the tribofilm formation and the associated degrees of wear for environmentally friendly synthetic lubricants and their conventional counterparts. Dr. Jason Galary Read More Related Documents Product Overview - Rheolube® 380 & 380-G1 Download The Design Engineer's Guide to Selecting a Gear Box Grease Download Datasheets & SDS Search for Technical and Safety Datasheets of Nye products. Please note: TDSs are only available when United States is the selected Country. 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