Shengtai bearings

Product description

: SF-2 Boundary Lubrication Bearing
SF-2 type material is POM plastic filled PTFE modified surface layer of the three-tier self-lubricating composite material, which is a benign boundary lubrication material, and therefore particularly suitable for high load low speed rotational movement, the rocking motion and frequently open and close under load and difficult to form hydrodynamic lubrication of bearings, thrust washer only, slider, tees and other friction parts. SF-2 can fully utilize trace grease lubrication under boundary lubrication conditions without refueling for long-term maintenance. Completely oil-free condition, SF-2 friction properties and allows the PV value is low, it is often in rolling out the storage pit plastic surface, coated with lithium grease or silicone grease, etc. during assembly.

Note: SF-2 series of products can also choose a different base materials according to different conditions, such as: bronze substrate, a stainless steel substrate, and "lead-free" and other formulations. SF-2Y are environmentally friendly lead-free products, the color is orange yellow, orange, blue.

Pedal assembly, balance bushings, brake calipers, steering main pin sleeve bushings and truck tailgate, truck, crane, truck crane, forest machinery, packaging machinery, construction machinery, hydraulic motors, agricultural machinery, mining machinery, metallurgy machinery, irrigation machinery, automobile, steel rolling industries.

SF-2 polymer surface chemical resistant, so it depends on the corrosion resistance of steel back and look plating. The back surface of the steel or tin-plated copper, can effectively prevent atmospheric corrosion; if operating in corrosive media, etc. galvanized steel back can.

SF-2 at Grease Lubrication wear characteristics, as follows: it's "running-in" wear rate is very small; the line can be seen from the figure, the applied grease when assembled consumption to a certain extent, the wear rate gradually increases, as shown in dashed lines; if refuel again before the wear rate rises, the wear rate remained stable; when the time interval of fueling appropriate material life can be greatly extended. The refueling time interval depends on the cumulative amount of wear. Grease lubrication: ambient temperature is below 80 ℃, recommended the use of lithium soap grease; ambient temperature above 80 ℃, recommended the use of silicone-based grease; not recommended grease containing EP additives.