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MRP Fiber-Lube
Daemar’s Fiber-Lube composite bushings allow true self lubrication. Ideal for long-term highly loaded applications. Additional benefits include: low friction values and resistance to corrosion.
Product Description
Many OEM design engineers specify a bearing design that may well have life cycle capabilities ten times over what their most strenuous applications require. With that in mind, Daemar’s Fiber-Lube™ MRP bearing will perform more in line with the actual needs of today’s innovative machine design.
Our traditional composite bearing materials, such as the Fiber Wound Series, have less than 0.005″ wear at over 1.6 million cycles. That type of wear curve can be unnecessary for 70% of most applications. These issues come together to allow Daemar to supply a bearing better matched to customers’ needs, at a better price.
Product Design
Using the next generation of Teflon® only recently available to the bearing industry, Daemar is able to supply a composite bearing with the high tenacity PTFE mono-filaments as the primary anti-friction component in the ID of the bearing. The wear liner still incorporates small woven pockets to ensure a high degree of embeddability into the bearing surface, as well as ensuring that a high content of PTFE is pushed to the surface in the most efficient fashion possible. This allows for a quick transfer of PTFE from the bearing ID to the mating surface.
Fiber-Lube™ MRP bearings are designed to minimize wear; however, the bearing wear is effected by the general operating conditions, such as speed, sliding distance and load. With intermittent rotation or oscillation, radial wear should be negligible over thousands of hours. Hard chrome plating gives excellent wear performance and protects the shaft from corrosion. Softer coatings such as cadmium or zinc are not recommended.
Typical Applications
Fiber-Lube™ MRP bearings are the bearing of choice in highly loaded bearing joints where a life cycle of over 500,000 cycles is desired. Testing has shown this bearing has wear under 0.006″ after 1.6 million cycles.
Applications include:
material handling equipment
high duty cranes
earth-moving equipment
construction equipment
agriculture equipment
food processing systems.
Mechanical & Physical Properties
The Fiber-Lube™ MRP bearing can withstand static loads of approximately 60,000 PSI and 30,000 PSI under dynamic loading. At these loading levels, minimum distortion will occur. For dry running applications, the maximum speed is approximately 10 surface feet per minute.
This bearing’s operating temperature range is ±325°F. Maximum continuous operational surface temperature for the standard formulation is 325°F, depending upon load characteristics. The bearing has been heat stabilized at these temperatures, so that little dimensional change will occur in the bearing during operation. In a free state, the coefficient of expansion of the MRP bearing is approximately 7 x 10-6 in/in/°F, similar to the coefficient of expansion for steel, and actually less than some metals.
Ultimate Compression Strength (PSI)………….. 60,000
Unit Load Limit (PSI)……………………………….. 30,000
Temperature Range (Standard Formulation)*… ±325°F
Coefficient of Thermal Expansion (in/in/°F)…… 7×10-6
Thermal Conductivity (BTU • in/(hr • Ft2 • °F).. 1.8-2.3
Water Absorption (2 hours)……………………….. 0.12%
Water Absorption (24 hours)……………………… 0.16%
Specific Gravity…………………………………………. 1.87
Maximum Velocity (SFM)………………………………. 10
*Note: Special resin formulation available up to 500°F
