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Mengenal Berbagai Jenis Pelumas Mesin

Feb 10 2017 Prestasi Lubricants

Sebelum mulai membahas tentang berbagai jenis pelumas mesin, ada baiknya kita mengenal apa fungsi pelumas, atau yang biasa disebut "pelumasan". Pelumasan atau lubrikasi adalah  sebuah proses atau teknik untuk mengurangi gesekan serta keausan atas salah satu atau kedua permukaan yang saling bersentuhan dan bergerak relatif terhadap satu sama lain, dengan memberikan zat pelumas di antara keduanya. Sedangkan bahan yang berfungsi untuk mengurangi gesekan antara kedua permukaan tersebut disebut dengan pelumas.

Secara umum bahan pelumas diklasifikasikan berdasarkan wujud dari materialnya, yakni liquid (cair), semi cair(grease), dan padat. Pelumas liquid sangat kita pahami sebagai pelumas oli dan cukup lazim kita temui sebagai pelumas mesin kendaraan bermotor, gearbox, ataupun sistem lainnya. Pelumas semi liquid lebih dikenal sebagai grease (gemuk) memiliki kekentalan lebih tinggi dibandingkan dengan pelumas oli dan memang cenderung lebih "padat" daripada oli. Sedangkan pelumas padat memiliki wujud padat dan dibutuhkan pada kasus-kasus tertentu yang tidak dimungkinkan untuk menggunakan pelumas oli maupun grease.

Mari simak bahasan lebih dalam tentang masing-masing jenis pelumas untuk kendaraan bermotor dibawah ini:

1. Pelumas Cair

Sebagian besar pelumas oli yang beredar di pasaran dan paling banyak penggunaannya terbuat dari bahan dasar minyak bumi. Oleh karena itulah sering kali kita menyebutnya sebagai mineral oil (oli mineral), yakni oli yang berbahan dasar dari minyak bumi hasil tambang (mining). Oli mineral dapat diklasifikasikan menjadi tiga macam yaitu Paraffinic, Naphtenic, dan Aromatic.

Oli parafin sangat baik digunakan pada mesin manufaktur, untuk pelumas mesin industri, serta pada proses produksi industri karet, tekstil, dan kertas. Oli naphtenic lebih cocok digunakan pada kondisi temperatur kerja rendah, terutama untuk pendingin trafo industri, serta pendingin pada proses permesinan. Sedangkan oli aromatik berwarna hitam dan sangat lazim digunakan sebagai bahan seal manufaktur, serta sebagai perekat dan pengencer produksi aspal.

Namun, Pelumas oli mineral memiliki keterbatasan paling besar yakni kurangnya ketahanan terhadap temperatur kerja tinggi. Solusi dari kelemahan tersebut adalah dibuatnya oli melalui proses sintesa sehingga didapatkan oli dengan spesifikasi terbaik sesuai dengan yang dibutuhkan. Pelumas jenis ini biasa kita kenal sebagai oli sintetis, sebab oli tipe ini tidak berasal dari minyak bumi melainkan dari bahan organik maupun anorganik yang melewati proses-proses khusus sehingga didapatkan spesifikasi yang dibutuhkan terutama ketahanan terhadap temperatur tinggi.

Perpaduan antara oli mineral dengan oli sintetis biasa disebut dengan oli semi-sintetis. Dengan campuran maksimal sebanyak 30% oli sintetis, diharapkan akan didapatkan pelumas dengan kualitas tidak jauh berbeda dengan oli murni sintetis, namun dengan harga yang lebih terjangkau. Oli sintetis memang dikenal mahal karena proses pembuatannya yang lebih rumit dibandingkan dengan biaya mengolah oli mineral.

Banyak produk dari Prestasi Lubricants yang merupakan jenis pelumas cair, seperti oli motor, minyak rem, air radiator, dan lain sebagainya.


2. Pelumas Semi-Cair (Grease)

Grease, atau yang dalam bahasa Indonesia lebih dikenal dengan sebutan "gemuk", memiliki karakteristik khas, yang membuatnya sangat cocok digunakan pada sebuah sistem mekanis yang hanya bisa dilubrikasi secara berkala, serta sistem yang tidak mungkin dapat dilubrikasi oleh oli. Grease juga berfungsi sebagai sealent untuk mencegah masuknya air atau material lain ke dalam sistem mesin.

Prestasi Lubricants juga memproduksi pelumas semi-cair (gemuk) untuk kendaraan bermotor anda.


3. Pelumas Padat

Pelumas padat atau juga dikenal dengan pelumas kering memiliki gaya gesekan rendah. Masing-masing lapisan molekul dapat bergeser relatif terhadap lapisan yang lain hanya dengan sedikit gaya saja. Bahan yang paling banyak dikenal sebagai pelumas padat yaitu grafit.

Grafit banyak digunakan di kompresor udara, industri makanan, sambungan rel kereta, roda gigi terbuka, ball bearing, serta alat-alat perbengkelan. Grafit juga lazim digunakan pada gembok dan mesin kunci. Hal ini dilakukan karena jika digunakan oli untuk melumasi mesin kunci, debu-debu di udara justru mudah menempel dan akan cepat merusak komponen-komponen mesin.


Demikian sedikit pengenalan tentang berbagai jenis pelumas mesin. Jika Anda tertarik untuk menjadi distributor oli dan pelumas Prestasi, maka kami siap membantu Anda dengan sepenuh hati.

Silahkan langsung hubungi kami melalui tautan berikut, atau telepon kami di nomor-nomor dibawah ini:



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