SurfRainbow provides Sintered Powdered Metal Bronze SAE 841 Sleeve Bearings. These bearings are made from tin (8-9%), carbon, copper (87-90%), and other elements.
The oil filled sleeve bronze bushings offer various advantages. These bearings can operate at temperatures ranging from +10°F to +175°F with standard oil. SurfRainbow also provides custom bearings that are suitable for use at other temperature ranges. The standard tolerances of these bushings vary depending on their size. These bearings are vacuum impregnated with SAE 30 oil (~ 19% by volume) while manufacturing. The bronze manufactured using powdered metal process provides interconnected reservoirs for oil. These bushings are best suited for light loads at high speeds, and heavy loads at moderate speeds (maximum Pv 50,000 P-Load 2,000, V-SFM-1,200). They are self-lubricating bearings, meaning they release oil when in motion, which serves as a lubricant.