Does the roller bearing need oil?

Source: China Bearing Network Time: 2014-07-27

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Lubricants inside roller bearings can be roughly divided into oil and grease. Basically, most of the lubricants used in SKATE are grease lubricants; some products on the market use oil as lubricants.
Repair method 0? Preparation: dry towel, sharp tongs, bearing shovel night, bearing lubricant or grease.
a. Remove the C-ring and shroud: Use a dry towel to wipe off the dirt outside the bearing; then use a pointed plier to lift the side of the C-ring; take the C-ring and the shroud.
b. Bearing shovel removal: soak the bearing in the bearing shovel removed on the market; and shake it at this moment; foreign objects inside the bearing will be shaken out; some supermarkets buy ultrasonic shovel is also very helpful in eradicating foreign objects.
c. Dirty: Take the bearing out of the squeegee; wipe off the squeegee with a dry towel; then dry in a cool place.
d. Write the lubricant according to the trend to write grease or oil into the bearing; cover the cover and reattach the C-shaped ring.
e. Detection: After the inner ring of the bearing that has been assembled into the original condition is caught by the finger, several transformations are made.

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