(1). What are the common types of motorcycle bearings?

There are many bearings used in the various active parts of the motorcycle (such as the steering column, the front and rear wheel hub, the rear chain disc, the rear reducer of the chartere

d car, etc.), which are precision parts.  Bearings produced by regular manufacturers are generally tested as qualified products at the factory, but the correct installation and use are equally important.

In the process of using the motorcycle, if the bearing ball cage falls off, the working face in the rolling groove appears unconventional wear, spalling, and the rotation appears stuck, there are few quality problems of the bearing itself, and more problems in the use and installation.  Below, the problems that are prone to occur in each part of the motorcycle are analyzed one by one, so that manufacturers, maintenance industries and owners can draw attention to avoid unnecessary losses.

Motorcycle models vary, the following are some of the most common deep groove ball motorcycle bearings 6001ZZ, 60012RSR, 600-2ZR, 6002-2RSR, 6003-ZZ, 6003-2RSR, 6004, 6200, 6201, 6202, 6203, 6204, 6205, 6206, 6300

(2) Cause and analysis of early damage

1 Bearings on the front and rear wheel hubs and rear chain disks

▲ Because the owner in daily use, wading too deep or often wash the car, let the water into the bearing, so that the grease in the bearing gradually fails, the formation of bearings in the rolling groove and ball wear serious, the clearance increased significantly;

▲ If the front and rear wheels are too tight or too loose when leaving the factory or selling, the driving will be unstable for a long time, the bearing is stuck or the bearing displacement is loose, the ball cage is damaged or falls off, the gap is too large, so that the brake disc and the wheel phase friction, increasing the driving resistance;

▲ The bearing on the rear sprocket disk is easy to enter water or adjust too tight and loose, which will cause damage, so the owner should pay special attention to the car wash or the deep water pit, and check the maintenance in time.  If the replacement is damaged, it must be in place and adjusted until the wheel rotates flexibly and there is no obvious clearance.

2 Crankshaft connecting rod size roller bearings and ball bearings on both sides

Generally, two-stroke engines are more easily damaged.  The main cause of the damage to the roller bearing of the connecting rod size is: the oil quality is too poor or the oil amount is too small.

▲ Engine working temperature is too high, aggravate the friction heat generating surface softening, premature fatigue spalling of the working face, spalling particles into the cage of the steel column, resulting in operation block;  The roller produces abnormal load on the cage, aggravates the wear of the cage, causes the cage to break and break, and the crankshaft connecting rod to lock.

▲ If the oil replaced by the four-stroke engine is shoddy products or the use period is too long, the lubrication effect is reduced and the wear is aggravated, which is easy to produce impurities and block the oil passage;  After the assembly or overhaul of the new car, the hard foreign matter in the instrument belt used in the field is not clean enough or enters the bearing channel during correction, causing the bearing rotation to be blocked;  The crankshaft is pressed with different cores or the crankshaft is misaligned during installation, which increases the rotating load of the bearing and causes damage.

3 Bearings on the wheel of the charter car

Generally, the shock absorption after the car is a single support, the load is large, if the bad road conditions do not slow down, easy to cause wear, affecting the service life, easy water should be paid attention to when washing the car.

4 Column upper and lower bearings

Due to the failure of the front shock absorption, insufficient lubrication or the discomfort of the upper and lower fastening force, the ball is broken or the ball working surface is spalling, and the direction steering is astringent or deviated, which affects the safety of the driving.

To sum up: bearing damage is mainly caused by poor lubrication, installation is not in place, improper clearance and poor use environment, etc., if not found or repaired early, it will cause greater losses or affect driving safety.  Therefore, please manufacturers, dealers, maintenance industry and owners to pay attention to avoid such accidents.

(3) What is the impact of the motorcycle front wheel bearing broken?

There are many kinds of motorcycle engines, taking the common model of motorcycle engines as an example, there are about 10 different types of bearings, such as crankshaft bearings, connecting rod bearings, camshaft bearings, bearings of each shaft of the transmission, etc., some valve rocker arms and bearings, bearings also have different types of ball bearings and needle bearings, depending on the specific model.