![]() You are asked to submit the following documents:Ī) A short technical report including your design and checking calculations.īasically i need the first part which is designing a pinion and a gear meshed together and getting me a factor of safety for bending stress between 2.5 to 4~ and a factor of safety for contact stress between 1.2 to 1.4 Im stuck and i thought i could ask for help. the upper and lower parts of the casing are fixed Covers are fixed to the casing of the gear box D = 25 mm, B = 7 mm) is used to prevent leakage of oil fromīoth ends of input and output shafts. Supported on the casing through two ball bearings (e. Mounted on the driven shaft (3) by means of a feather 6圆x15 (11). Pinion can be integrated with (or mounted on) the driving shaft (5). ![]() the pressure angle isĪnd the helix angle may be chosen between 20ĭetail drawings of a similar gear-box are shown on the following pages. (rpm), a transmission ratio of 2.5, and a service life of 15 (kh). The gear box has an input power of 4.5 (kW), an input speed of 2500rpm Spur & Helical Gears When the shaft are parallel 2. The factors to be considered for deciding the type of the gear are General layout of shafts Speed ratio Power to be transmitted Input speed and Cost 1. ![]() It is required to design a single stage Spur / helical gear reducer (According to theĪttached table). Selection of Gears: The first step in the design of the gear drive is selection of a proper type of gear for a given application.
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