Jurnal Ilmu Teknik Mesin (JITM)

MODIFIKASI DESAIN FIX POINTS PADA MESIN BUILDING ALT E-2

2025-02-04T07:58:23+07:00

The increase in downtime on the ALT E2 building machine is caused by several
problems that occur on the ALT E2 machine. This is because there are several
ALT E2 building machine spare parts that are obsolete, the fix point mounts are
not strong enough, and there is high damage to the ply service. This research
aims to reduce downtime on the ALT E2 building machine. From the fishbone
analysis carried out, the author made modifications to the ALT E2 machine by
upgrading the Mitsubishi A2US series PLC to the Q03UDE series PLC to
maintain the availability of spare parts for the obsolete ALT E2 building
machine, redesigning the Fix points to make them sturdier, more precise and
easier to use. Carrying out maintenance on the drum motor, as well as modifying
the brake ply service by replacing the PVC hose with a copper pipe on the ALT
E2 machine to reduce air leaks, so that the ply service can work optimally.

RANCANG BANGUN ALAT EARLY WARNING SYSTEM UNTUK PEMELIHARAAN MESIN CHILLER DI GEDUNG PERKANTORAN

2025-02-04T08:21:56+07:00

Chiller machine is a crucial element in an office building's cooling system.
Maintenance of the chiller is essential to ensure optimal performance and
prevent undesirable operational disruptions. Effective monitoring of the
chiller's condition is key to maintaining the reliability of the building's cooling
system. With proper monitoring, potential damages to the chiller can be
detected early, allowing for repairs to be made before the issues become more
serious. Therefore, research and improvement solutions are needed, such as
designing an Early Warning System (EWS) and adding a mobile application to
monitor temperatures as part of the chiller maintenance efforts in office
buildings, using the PDCA (Plan-Do-Check-Action) method. This approach
aims to maximize the efficiency and effectiveness of chiller maintenance. The
implementation of this solution is expected to significantly contribute to
improving the quality of services and facilities management in office
environments.

DESAIN & SIMULASI BEARING HOUSING FLAT IMPACT ROLLER

2025-02-04T08:10:22+07:00

The research aims to design a bearing housing that is more resistant to impact
from coal, extending bearing life, and reducing downtime and maintenance
costs at PT KTC. The methodology involves problem identification through
field studies, data collection on failures, design using wear-resistant materials,
and strength testing. The results show that the new design improves durability,
bearing lifespan, and operational efficiency, with a cost analysis indicating
significant savings and a quick return on investment. Implementation on
Conveyor Line C also enhances productivity and system reliability.

MODIFIKASI DESAIN FIX POINTS PADA MESIN BUILDING ALT E-2

2025-02-04T08:02:28+07:00

PERANCANGAN DESAIN CHUTE PADA TRANSFER CONVEYOR ABC

2025-02-04T08:14:27+07:00

PT CC is a coal company operating in East Kalimantan Province. To achieve
production targets, the company needs to perform maintenance and repair
machinery to ensure smooth production processes. The fixed plant department
is located at the port, where coal is transferred from hauling to barges. Coal is
moved to the barges using a conveyor, which feeds into a chute that transports
coal at a capacity of 2000 tons per hour with a conveyor speed of 3.2 meters
per second. This causes friction between the chute walls and the coal, leading
to wear on the chute walls. This research aims to design a chute liner using
ceramic alumina material for the chute walls. The researchers experimented by
replacing the chute wall material from ASTM A36 with ceramic alumina. Based
on the research results, the design created using SolidWorks software produced
shapes and dimensions that align with the research concept. Load analysis
indicated that the design has a stress value of 0.10108 N/mm², which is lower
than the yield strength of ASTM A36 material. Therefore, the chute design is
safe from damage due to coal loading.

IMPLEMENTASI TEKNOLOGI PNEUMATIK PADA ALAT REPAIR TIRE DAN EVALUASI ERGONOMI MENGGUNAKAN REBA

2025-02-04T08:06:17+07:00

PT RYB, a tire manufacturing company, is facing a high defect rate on tires,
especially at Plant A, which produces bias tires for trucks, buses, and mining
vehicles. Plant A is supported by the Engineering department to maintain the
reliability of production machines, while the Final Inspection department
ensures tire quality before sale. The Repair Tire process is used to fix damaged
tires, especially the tread, as defects can render tires unsellable (scrap), with
workers cutting on the floor in squatting and bending postures. To improve
repair quality, a semi-automatic Repair Tire tool was designed using a heater
cartridge, pneumatic cylinder, thermocouple sensor, and Smart Relay as the
control system. The research used anthropometric methods to determine
machine dimensions and REBA (Rapid Entire Body Assessment) to analyze
worker posture before and after the tool design, component testing using the
verification test method, and the implementation of the repair tire tool. With
this method, PT RYB is expected to reduce defect rates and improve product
quality. The design results of the repair tire tool show a reduction in the REBA
score to 4.