Machinery Lubrication

Machinery Lubrication May-June 2017

Machinery Lubrication magazine published by Noria Corporation

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34 | May - June 2017 | How to Determine AUTOMATIC LUBRICATION How to Select a System for Process Industries Proper lubrication requires two main considerations: the correct choice of lubricant and the most efficient way of applying it. Failure with either selection can result in a major equip- ment malfunction. This article will describe how to select the right lubrication system for any process plant. Manual Lubrication The vast majority of greasing points are manually lubricated. During the last 15 years, several new products have been introduced to ease the lubrication technician's work, including grease meters, cordless grease guns and computer-monitored greasing systems that employ radio-frequency identification (RFID) technology to identify lube points. There are also systems that use acoustic aids to sense when the lubricant has reached the rolling edge of the bearing. All of these products have made manual greasing more reliable. Today, no lube tech should be forced to perform his job with only a manual grease gun and count strokes to obtain the correct amount. At the very least, the technician should have a grease meter. If the plant has a large number of lube points, a cordless grease gun would also be of great help. Automatic Lubrication Systems Automatic lubrication systems are designed to eliminate manual labor costs while allowing the machine to be lubricated during normal production. These systems can also minimize the risk of lubricant contamination, avoid potential hazards associated with manual lubrication and provide better control of the amount of lubricant dispensed. A variety of system configurations are available, including dual- line, single-line volumetric, single-line progressive and single-point systems. Dual-line Systems The dual-line system is the predominant lubrication system in heavy process indus- tries. These systems are very reliable, simple to understand and maintain, and allow you to easily expand or reduce the number of points. Their name comes from the fact that they have two main distribution lines. Pressurized lubricant entering the dispenser from line 1 forces the pilot piston (the lower one) to the left, allowing pressure to be applied to the right side of the main piston. The main piston then begins to move to the left. This dispenses the lubri- cant on the left side of the main piston through the pilot piston and the check valve to the bearing connected to the outlet. Pressurized lubricant entering the valve Lubrication By r Ay mellor, r.J. mellor & co., And PAr Funck, ASSAluB A manual grease gun with a grease meter

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