Investigation of Wear Mechanism of Ball Bearings Lubricated by Bio-Lubricant

Gasni, Dedison; Mulyadi, Ismet Hari; Affi, Jon; Miswar, Andre Yulanda

doi:10.14716/ijtech.v8i7.688

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Dari penelitian yang dilakukan oleh Gasni et. al., 2017 komposisi kandungan fatty acids antara minyak kelapa dan minyak sawit tidak jauh berbeda dimana kedua minyak tersebut kaya akan kandungan lauric acid (C12.0) [11].…”

Section: Pengaruh Persentase Penambahan Minyak Kelapa Dan Minyak Sawiunclassified

Pengaruh Penambahan Minyak Kelapa dan Sawit Terhadap Sifat Fisik dan Tribologi Pelumas SAE 40

Gasni

Razak

Ridwan

et al. 2019

METTEK

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Penelitian ini bertujuan untuk mengetahui efek dari penambahan minyak kelapa dan sawit terhadap sifat fisik dan tribologi pelumas SAE 40. Vegetabel oil, seperti; minyak kelapa dan sawit, memiliki nilai viskositas indek yang tinggi dan sifat pelumasan yang baik terutama didaerah boundary lubrication jika dibandingkan dengan mineral oil (SAE 40). Hal ini disebabkan karena vegetabel oil memiliki kandungan fatty acids yang tidak dimiliki oleh mineral oil. Keunggulan lain dari minyak kelapa dan sawit adanya sifat yang ramah lingkungan karena mudah terurai di alam dan dapat diperbaharui. Pada penelitian ini sifat yang baik dari minyak kelapa dan sawit ini akan dimanfaatkan sebagai zat aditif pada minyak pelumas SAE 40. Pengujian dilakukan terhadap sifat fisik dan tribology dengan penambahan 5%, 10%, 15%, dan 20% berat dari minyak kelapa dan sawit ke dalam minyak pelumas SAE 40. Pengujian sifat fisik terdiri dari pengukuran viskositas pada temperatur 400C dan 1000C dan viskositas index. Pengujian sifat tribologi untuk menentukan keausan dan koefisien gesek berdasarkan ASTM G99 dengan menggunakan alat uji pin on disk. Dari hasil pengujian diperoleh bahwa dengan penambahan minyak kelapa dan sawit kedalam minyak pelumas SAE 40 terjadi peningkatan viskositas indeks. Peningkatan viskositas indeks sebanyak 17% dengan penambahan 20% minyak sawit. Terjadi perubahan sifat tribologi dengan penambahan minyak sawit, berupa penurunan keausan dan nilai koefisien gesek dibandingkan dengan penambahan minyak kelapa. This study aims to determine the effect of coconut and palm oils as additives to physical and tribological properties of SAE 40 lubricating oil . Vegetable oils, such as; coconut oil and palm oil, have high viscosity index and good lubrication properties, especially in boundary lubrication compared to mineral oil. This is due to vegetable oil having fatty acids that are not owned by mineral oil. The advantages of coconut oil and palm oil are environmentally friendly properties because they are biodegradable and renewable. In this study, the good properties of coconut and palm oils will be used as additives in SAE 40 lubricating oil. Tests are carried out on the physical and tribological properties with the addition of 5%, 10%, 15%, and 20% by weight of coconut and palm oils into SAE 40 lubricating oil. Physical properties testing consists of measuring viscosity at temperatures of 400C and 1000C and viscosity index. The tribological test is to determine wear and coefficient of friction based on ASTM G99 using a pin on disc test equipment. From the test results, it was found that coconut and palm oils as additives into SAE 40 lubricating oil could increase in viscosity index. The increase of the viscosity index was 17% by adding 20% of palm oil. There was a change of tribological properties in the form of decreasing on the wear and the coefficient of friction with the addition of palm oil compare to addition of coconut oil.

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Section: Pengaruh Persentase Penambahan Minyak Kelapa Dan Minyak Sawiunclassified

Pengaruh Penambahan Minyak Kelapa dan Sawit Terhadap Sifat Fisik dan Tribologi Pelumas SAE 40

Gasni

Razak

Ridwan

et al. 2019

METTEK

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“…The main use of polyols is to be used as a reactant to make polymers. Polyols can also be used for other purposes, such as intermediate chemicals, lubricant formulations, and stabilizers (Bresolin et al, 2018;Gasni et al, 2017;Pavani, Pola-Rao, and Prasad, 2017;Kamalakar et al, 2015). Polyols are widely used in the manufacture of polyurethane.…”

Section: Introductionmentioning

confidence: 99%

Hydroxylation Kinetics of Epoxidized Tung Oil Using Methanol as Nucleophilic Agent

Budiyati¹,

Rochmadi²,

Budiman³

et al. 2023

IJTech

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The synthesis of vegetable oil-based polyols has been carried out through the epoxidation-hydroxylation process. However, Tung oil has never been explored in the process, even though Tung oil has a high double bond. Epoxidized Tung Oil (ETO) with oxirane numbers of 3.92 to 4.04 mmol/g were hydroxylated with methanol and catalyzed by Sulfuric Acid (H2SO4). The objective of this study is to produce polyols from ETO and to evaluate the influence of temperature and catalyst concentration on the hydroxylation process. A second-order reaction kinetic study was also developed to represent the reaction. The ETO hydroxylation was carried out in a batch reactor for four hours. The reaction rate was determined based on the concentration of ETO (oxirane number) and Hydroxyl Value (OHV). The result shows that temperature and catalyst concentration have a directly proportional correlation to OHV and are inversely proportional to the concentration of ETO (epoxy). For temperatures above 40°C, the decreasing rate of the epoxy concentration at the beginning was relatively much faster than at the end of the reaction. In the temperature variation, the highest OHV obtained was 3.70 mmolKOH/g or 207.39 mgKOH/g at 80°C. The optimum catalyst concentration obtained in this study was 3%. The evaluated kinetics model gave great results for all reaction temperatures, with the highest total SSE for epoxy concentration and OHV data fitting of 0.156 and 0.045, respectively. The calculated activation energy (Ea) was 30.41 kJ/mol and the pre-exponential factor (A) was 255.00 g.mmol -1 .min -1 .

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“…It is greatly crucial to select the raw materials for lubricant safety. Castor oil, 4 coconut oil 5 and pullulan 6 have been used as biodegradable feedstocks for lubricants; all of those materials were non‐toxic. Bio‐lubricants based on vegetable oil have also been applied in the industrial field, 7,8 and modified vegetable oils could be used safely as lubricants in the food industry, 9 but its oxidation stability is lower than that of mineral oil.…”

Section: Introductionmentioning

confidence: 99%

Effects of carbon nano onions on the tribological performance of food‐grade calcium sulfonate complex grease

Wang

Qian

Gong

et al. 2021

Lubrication Science

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To improve the lubricity of the as‐prepared food‐grade calcium‐based grease, the effects of nano‐additive carbon nano onions (CNOs) on the tribological properties are systematically investigated using a ball‐disc wear tester. The properties of CNOs‐containing food‐grade calcium sulfonate complex greases (CSCG‐FG) were characterised by thermogravimetric analyser, rheometer and electrochemical workstation, Listeria monocytogenes, X‐ray photoelectron spectrometer and Raman spectrometer. The results revealed that pure and CNOs‐containing CSCG‐FG were proved to be safe. The average coefficient of friction (aCoF) and wear volume of the disc at CSCG‐FG of 0.10 wt% CNOs were the minimal values, which were 31.4 and 70.0% less than that of pure CSCG‐FG at 25°C and greatly lower than that of similar commercial food‐grade grease. At high temperature, CNOs‐containing CSCG‐FG had lower aCoFs and torques. CSCG‐FG of 0.10 wt% CNOs would be most possibly used in engineering applications and the results will provide valuable insight into developing food‐grade lubricants.

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Investigation of Wear Mechanism of Ball Bearings Lubricated by Bio-Lubricant

Cited by 9 publications

References 8 publications

Pengaruh Penambahan Minyak Kelapa dan Sawit Terhadap Sifat Fisik dan Tribologi Pelumas SAE 40

Pengaruh Penambahan Minyak Kelapa dan Sawit Terhadap Sifat Fisik dan Tribologi Pelumas SAE 40

Hydroxylation Kinetics of Epoxidized Tung Oil Using Methanol as Nucleophilic Agent

Effects of carbon nano onions on the tribological performance of food‐grade calcium sulfonate complex grease

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