The design of a four square gear/lubricant research instrument

• Main Author: Hansen, Harry James
• Other Authors: Gatcombe, Ernest K.
• Language: en_US
• Published: Monterey, California. U.S. Naval Postgraduate School 2012
• Online Access: http://hdl.handle.net/10945/9477

Approved for public release; distribution unlimited. === The gear or lubricating oil test instrument described incorporates the four square principle in its design. This basic configuration is improved over like devices in that loading may be varied while the machine is in operation and rotating seals have not been used. The elimination of the need for these seals allows prolonged operation at high speeds. The machine will be capable of operation at 10,000 RPM however, the first phase of operation will call for a speed of 1800 RR1. The device has two separate and complete thermostatically controlled lubrication systems; this gives the option of testing lubricants in the main, as well as the test section. The test section is provided with an observation port which is easily removed to change or service the test gears. The rig as a whole was designed for reliability of operation and ease of maintenance.