Line Assembling Investigation of Three Wheels Bicycle Using Time Measurement Method at Pt X

Production activities always require the best method, the best place and the best time. Time analysis required to determine the length of time to complete work. PT X is one medium enterprise company in Indonesia assembles a three wheels bicycle type F-586. Based on the production floor observation known that the assembly process of the three wheels bicycle done manually. Unbalance of task at work stations make the assembling process takes longer time than it should. This study will measure the time of each working element needed to assembly the product. Observation and measurement describe there are 31 of working elements. The average of the longest working element time take place at element no.23 is 304 seconds and the average of the shortest working element time take place at element no.2 is 2.83 seconds. The largest standard deviation is equal to 1.66 second take place at working element no. 24 and for the smallest standard deviation is 0.27 second take place at working element no 13. Key word: time measurement, work elements 1. Background In any human activity, both daily activities and production activities would require a method, time and place. In order to achieve the best goal of activities will require the best method, the best place and the best time. (Sukania, 2012). Analysis of time required to determine the length of time to complete work assignments, so it can be determined the best time. Analysis of the time is also determine the time allowance required by the workers. Study of time should be followed by research of the labor movement during an activity because its helps to find an efficient and an effective motions. The motions study can be conducted by directly observe the workers or by record the worker activities using a video camera and then analyze it by turning in a slow speed. The third factor considered is the conditions of work that includes a place or work stations and work environment. This is a very important factor because the time needed to completing the job will take longer if the workplace is inadequate and the work environment does not support. PT X is a medium enterprise in the industrial product assembly, established in 1986 with 40 employees and produces two types of bicycles. Today, PT. X has an employee approximately 500 peoples, consist of various levels of education. Base on the results of the preliminary studies it is known that the main problems faced in the assembly process of the three wheel bicycle is the target not achieve. The individually assembling process to assemble three wheel bicycle components become a finished product is thought make the enterprise not achieving the target of 160 units / day To resolve the problem, it is necessary to correct the system assembly process. The companies that have a mass production type, which involves a large number of components must be assembled, production planning activities provide an important role to regulate the operations or assignment to the line production. Balance of the works is the combination of works assignments to the operator or operator groups that occupies a particular workplace. When the planning is not appropriate, then some workstations on the line assemblies have a different production rate. The un balance of assembling speed causing to the accumulation of materials or intermediate products between the work stations. Other side effects are compensated lost cost and negative psychological for workers. One of the most important variable to be considered in setting a production line is the working time data element. Therefore, this study will analyze the time required by each element of work that can be an input to create a balanced assembly lines.