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MOTOREX Magazine 2017 109 EN

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GEAR OIL HYDRAULICS

GEAR OIL HYDRAULICS DIFFERENTIAL MULTI-DISC CLUTCH Picture: MF ALL-WHEEL DRIVE / DISTRIBUTION GEAR TRANSMISSION PTO SHAFT WET BRAKES FINAL DRIVE FARMER POLY 604 REDEFINES UTTO UTTO stands for “universal tractor transmission oil” – a single oil that can be used for transmissions, axles, differentials, distribution gearing and final drives with or without wet brakes, as well as hydraulics. New highperformance MOTOREX FARMER POLY 604 oil masters this balancing act with aplomb. A modern tractor is a real powerhouse: higher output, more torque, efficient hydraulic systems and high brake performance requirements make the demands placed on today’s UTTO oils far more stringent than they were just a few years ago. FARMER POLY 604 is a new high-performance addition to the MOTOREX UTTO product line. It was designed specially for heavy-duty service under the toughest conditions, such as working with heavy attachments, pulling heavy loads or moving at high speed on the road, or operating on steep slopes. UTTO REQUIREMENTS Every assembly makes different demands on the properties of an UTTO oil: 1. GEARING Many modern transmissions feature electrohydraulic shifting that takes just a fraction of a second. The high circumferential speeds of gears in reduction gear assemblies require a heavy-duty lubricant film, while synchronization demands a fine-tuned additive pack- 8

age. Extreme shear forces, such as those that occur in the differential, also need to be cushioned to minimize wear. 2. CLUTCHES Qualities that are beneficial in a gear oil can prove problematic in wet brakes or multi-disc clutches. Here the choice of additives is again key. On the gearing side, FARMER POLY 604 meets extreme requirements. Nevertheless it also provides the desired friction coefficients in wet brakes and progressive, non-slipping adhesion in multi-disc clutches. Introducing other oils can impair the properties of the UTTO oil. 3. HYDRAULICS In hydraulic systems, the UTTO oil transmits powerful forces. FARMER POLY 604 meets HVLP-D hydraulic oil specifications under the DIN 51502 standard. The latest formula is winning fans with its very stable viscositytemperature curve, good water absorption capacity and effective protection against corrosion and wear. NEW COMBO FORMULA FARMER POLY 604 represents the latest stage in UTTO development, featuring multirange viscosity. The desired qualities were built into the new product through a special combination of extremely shear-stable base oils together with a modern additive package. The tribology specialists at MOTOREX chose a fully balanced formula. FARMER POLY 604 has passed extensive testing, both in the lab and in several stages in the field, with flying colors, exhibiting the following benefits: • Excellent performance at cold temperatures (quick engine permeation) • High shear and high-pressure stability • Excellent long-term viscosity (see chart) • Smooth shifting • Effective protection against wear and corrosion • Ideal temperature-viscosity behavior • High thermal stability • Broad material compatibility • Meets the latest specifications FARMER POLY 604 is the ideal choice for demanding UTTO assemblies and sets new standards in benefits and performance. Do you have questions about UTTO and the FARMER POLY family? Your MOTOREX partner will be happy to provide further information. • Wet brakes and multi-disc clutches perform safety-critical tasks and must meet precisely defined manufacturer’s friction specifications. The ball roller bearing test generates extremely high shear loads. A tapered roller bearing is tested at an axial load of 5000 N for several hours. COMPARISON OF LONG-TERM VISCOSITY Viscosity at 100 °C in mm²⁄s 12 10 8 6 4 2 0 FARMER POLY 604 Standard UTTO oil 1 2 3 4 Shear test to DIN 51350-6 in hours MOTOREX FARMER POLY 604 is exceptionally shear-stable and retains its original viscosity class for a long time compared to standard UTTO oils. MOTOREX MAGAZINE 109 I JANUARY 2017 9

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