If you are an active roller and a lot of time to spend on their favorite eight wheels - roller bearings serve you on average 1 season.Of course, if you provide them with good care.But quite a few people who put on rollers ride infrequently and only perfectly paved paths.In this case, the bearings can serve for years.
you will easily understand when it's time to change them - just wheels every day will revolve worse, despite the fact that they are clean and well lubricated.
Also, if you ride in the rain and on arrival home did not do anything with the rollers, do not be surprised when after some time the wheels stop spinning completely.Here you have only one way out - to replace the bearings.
So if you want to ride longer without a problem - try to ride on the high-quality asphalt, avoiding the roads on which a lot of dust, mud and puddles.
Feature
All bearings have their own standards, that is, they exist prearranged dimensions and characteristics.Roller bearings often are of two types: 608 and 688 classes (the so-called microbearings).The most commonly used class of bearings 608. decipher this language.
first digit - 6 - indicates that the bearing is a type of "single-row deep groove" (single row deep groove).
second digit - 0 - denotes series bearing.There are several series of ultra-thin to heavy.
third digit - 8 - is equal to the diameter of the inner ring.
Usually after the bearing type written letters that symbolize the type of the boot on it.The most commonly used:
Z - Metal Bellow protects the bearing rollers with one hand.
ZZ - metal dust caps are on both sides of the bearing.
RS (rubber shild) - indicates that the bearing waterproof (not waterproof), then there is dust plate coated with rubber.Record significantly prolongs the life of the bearing.
2RS - closed rubberised plates on both sides, is the longest.
also roller bearings are classified on a scale of ABEC (Eng. "Annual Council engineers bearings").ABEC The larger the number, the more accurately manufactured bearings.The higher accuracy class, the lower bearing to vibrate at high speed.There are several classes of accuracy: ABEC 1, ABEC 3, ABEC 5, ABEC 7 and AVES9.
bearing grease
From how and how well lubricated bearings depends on the ease of rotation.If the store bearing lubrication plastic (thick grease), the wheel will spin tugovato, and if the liquid lubricant, it will be easy to spin the wheel.But it must be borne in mind that the store wheel rotates without a load on the weight, and under the influence of your body weight will change.Resource grease significantly higher, and in the service they need less.The liquid lubricant more short-lived due to the fact that it can evaporate or leak, and in this case the roller bearings wear out quickly, which gives some discomfort, as they often have to be replaced.This in turn leads to unnecessary costs.
