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Perancangan Dan Perencanaan Pengecoran Gear Housing P3TO Polman (VO) Dengan Material FC 250 Sesuai Standar JIS G 5501
The transmission system is an important part for transmitting power from engine to the wheels of the vehicle. This function is done by gearbox. The purpose of this design and development is to produce a prototype gearbox system for agricultural transportation vehicles with a 750 kg transport capacity. The preparation of the gearbox system for agricultural transportation vehicles requires complex engineering skills, ranging from designing, material selection, production planning, component manufacturing, measurement, assembly, to prototyping for testing. The gearbox must be capable of producing four forward speeds and one reverse speed on the vehicle. This technology must be mastered well in advance to be able to develop agricultural transportation vehicles. Development of this gearbox system will be done by reverse engineering technology using all facilities in POLMAN Bandung. Through this research, the mastery of technology design and manufacture of gearbox system can be well controlled. Based on the study, it was found that the total gearbox ratio for gear1 was 3.272; gear2 2.143; gears3 1.364; gear4 1 and reverse gear 3,264. Maximum input torque on the gearbox is 58 Nm and it will be transferred to the wheel become 1871 Nm. To the development the gearbox, require the gear housing to achieve the target of this development project. The gear housing required good damping capacity to reduce the vibration from the gearbox. The gear housing besides functioning as a casing that surrounds the mechanical components of the gearbox, it also functions to provide mechanical support for moving components, mechanical protection from the outside world for these internal components, liquid tightened containers to hold lubricants that inundate the gearbox components and most importantly can reduce vibration generated by the gearbox component so that it does not interfere with the performance of other components. Therefore the material that is considered suitable based on the function to make the gear housing with the method of making metal casting is FC 250 (standard JIS G 5501)(1).
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