Kita bisa mulai dari waktu..sejak dimulainya kehidupan dunia..sejak itulah dimulainya detik ibadah kita..tingkat kesadaran jasmani dan rohani dipupuk seiring waktu mengasah kesadaran kita akan arti hadir nya keinsanan kita dimuka bumi ini..
waktu itu menuntun kita dalam setiap detik ibadah..nafas kita adalah ibadah..nafas kita untuk mengimani sang khalik, berzikir seirama detak jantung kita menyebut nama Allah..apapun dan siapapun kita..sesungguh nya kita adalah ciptaan Sang Khalik yang Maha Mengendalikan.
usia mengantarkan kita pada waktu pemahaman yang berirama dengan hakekat atau mendustakan hakekat..kesadaran diri, jiwa dan jasmani beriring mengarungi alam semesta bertasbih menyebut Nama Tuhan Allah SWT.
Hidup adalah ibadah..jiwa dan roh sebagai pengendali..harus dalam satu kesatuan kesadaran akan arti dunia adalah persinggahan semata..berbuat baik, berkata elok, beribadah dengan kesadaran untuk mendapatkan kemaslahatan dunia dan menempuh perjalanan panjang akherat.
ketika masa menjadikan kita ada, waktu terus mengejar kita..mulai menghilangkan jasad kita..menggunjang keyakinan dan ketidakyakinan sebagian.
apakah kita..manusia menyadari sesuai yang ada hanya karena Allah SWT. kembali memahami hidup adalah ibadah.
Site Engineer, bearings and power transmission advisor
Application Engineer
Selasa, 03 Mei 2016
Senin, 27 Oktober 2014
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Kamis, 22 Mei 2014
Point or Line Contact?
Monday, August 13th, 2012
Rolling elements in bearings make a very small area of contact
with the raceways, sometimes smaller than 1 square mm (0.0015 sq.
inches.) in ball bearings. At the point of contact, there is a
fundamental difference depending on the bearing type: “point” contact or
“line” contact. Ball bearings generally have point contact, while
roller bearings have line contact. The difference in operation is
critical: in an electric motor with a ball bearing on one end and a
roller bearing on the other, you’ll need to relubricate the roller
bearing about twice as often as the ball bearing.
One advantage for roller bearings is that by spreading the load over a greater area, they can last longer, or they can be subjected to a greater load over time. This is why “sheave duty” motors often have a cylindrical roller bearing on the drive end. The belts in the pulley add a larger radial load to the roller bearing. The line contact spreads the load across a greater area, reducing the stresses on the bearing steel that could eventually lead to fatigue failure.
The terms “point” and “line” contact are somewhat inaccurate, since the contacts are actually small ellipses, and the area of contact varies depending on the load and other conditions. When you tear down and examine the raceways in damaged bearings, understanding the type of contact will help. The patterns created on the raceways and rolling elements change depending on the type of roller to raceway contact.

One advantage for roller bearings is that by spreading the load over a greater area, they can last longer, or they can be subjected to a greater load over time. This is why “sheave duty” motors often have a cylindrical roller bearing on the drive end. The belts in the pulley add a larger radial load to the roller bearing. The line contact spreads the load across a greater area, reducing the stresses on the bearing steel that could eventually lead to fatigue failure.
The terms “point” and “line” contact are somewhat inaccurate, since the contacts are actually small ellipses, and the area of contact varies depending on the load and other conditions. When you tear down and examine the raceways in damaged bearings, understanding the type of contact will help. The patterns created on the raceways and rolling elements change depending on the type of roller to raceway contact.
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