SKF has developed the new super-precision bearing lubrication unit for use with oil-air lubrication in high-speed applications. This highly effective solution improves lubricant flow and reduces frictional heating in bearings. By reducing the operating temperatures and improving oil-air flow, oil consumption and noise levels can also be reduced.
The rotational speed at which a bearing reaches its operating temperature limit depends primarily on the heat generated (frictional heat) and the amount of heat that can be transferred away. One way to reduce frictional heat, particularly in bearings, is to be sure that the correct quantity of the appropriate lubricant reaches all necessary components.
Very high speed applications require a precise lubricant delivery system: The exact amount of oil required for adequate lubrication is continuously delivered by the oil-air system, thus minimising friction and operating temperature. SKF super-precision bearing lubrication units can extend bearing service life and allow increased operating speeds for high speed applications such as machining centres, milling machines, internal grinding machines and spindles for printed circuit board drilling.
The unit consists of a set of precision-matched spacer rings and a super-precision high-speed single row angular contact ball bearing in the 70 .. E series (ISO 10 dimension series) with either a 15° or 18° contact angle. Units are available for shaft diameters ranging from 30 to 70 mm.
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