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Briefly explain the calculation of bearing life
The Calculation of Bearing Life
In order to accurately calculate the life span of bearing, one must first understand what a bearing is and what forces can cause it to wear out prematurely. A bearing is a device which supports and locates a rotating shaft in a predetermined position in relation t......
1036 
Sophia
Milling of Rectangular Splines
Milling of Rectangular Keys
Milling of rectangular keys is an important secondary machining process and is used to form keyways in machine shafts. Various standard sizes of rectangular parallel keys are available in a number of materials. While they are often small in size, they are critical comp......
Absolute value input command G90, incremental value input command G91 - CNC milling machine programming
G90 and G91 - Absolute and Incremental Positioning Commands in CNC Milling
CNC (Computer Numerical Control) milling is a powerful machining method used to machine complex components in various shapes, sizes, and forms with precision accuracy. To ensure precise motion control, CNC machines are equ......
GB/T 9788-1988 Dimensions, shape, weight and allowable deviation of hot-rolled unequal angle steel
GB/T 9788-1988 Hot Rolled Unequal Angles: Dimensions, Shape, Mass and Permissible Deviations
This standard applies to hot rolled unequal angles for use in structural engineering.
The size tolerance for dimensions such as width (tolerance for the range of ± 0.4 to ± 5 mm) and length shall be i......
Nominal diameter range and shape of cold-rolled ribbed steel bars (GB 13788-2000)
Cold-rolled Ribbed Steel Bars
Cold-rolled ribbed steel bars are a type of building material that has been common in the construction industry for many years. Due to their strength and long-lasting durability, these bars are perfect for construction applications where high levels of strength and r......
Dimensional tolerances for electrolytic plates and rods of Japanese National Standards
Japan Standard Electrolytic Board and Rod Size Allowable Deviation
With the development of modern industry, electrical products are not only strong and durable, but also require precise size accuracy. The features of electronic components determine the characteristics of electronic products. Mech......
Heat-resistant iron castings (abstract) GB 9437-88
Abstract
Heat-resistant cast iron, also known as heat resistant cast iron or heat resistant alloy cast iron, is a kind of cast iron material with strong heat resistance and high strength at high temperature. Its basic components are 2.5%-4.5% carbon and 11%-30% chromium, and some other impurities......
GB 10178-88 Ventilator field test (2)
GB 10178-88 Site Test for Fans
A site test of a fan should be conducted in order to ensure that all components of the fan, such as its motor, drive, impeller, and housing are all operating correctly. This test will allow for easy troubleshooting of any issues that may arise. The following outline......
Deformed iron-chromium-cobalt permanent magnet alloy (YB/T5261-1993)
Introduction
The Deformation FeCrCo Permanent Magnet Alloy, referred to here as FeCrCo PMA, is a new type of magnetic material based on the ferromagnetic properties of iron, cobalt, and chromium metals. It was developed by Tsinghua University and is currently the only such alloy available for com......
15F use
Boeing 767-300F (B763F)
The Boeing 767-300F, designed and manufactured by Boeing Commercial Airplanes (BCA), is a wide-bodied, medium range, twin-engine cargo aircraft, part of the popular 767 series. With a range of 4,035 nautical miles (7,445 km), the B763F has been optimized for cargo plane op......
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