2014年10月29日星期三

wind power bearing

The installation of the bearing should clean environment, small particles from entering the bearing will shorten bearing life. When replacing bearings to maintain a clean environment is very important. Allowed to tap with a hammer bearing note bearing not fall to the ground (or similar improper handling). Single Row Ball Slewing Bearing Before installing the shaft and the bearing housing should also check the condition of even a small amount of wear can also lead to poor fit, thereby causing early failure of the bearing.
On the wheel hub bearing unit, do not attempt to disassemble or adjust the wheel hub bearing seals unit, otherwise it would cause water damage to seals or dust from entering. Even ring and inner ring raceway are damaged, resulting in permanent failure of the bearing.
The ring is equipped with ABS unit has a magnetic thrust bearing ring, which thrust ring can not be a collision, impact or collision with other magnetic field. Remove from the box before installation, so that they stay away from magnetic fields, such as the use of electric motors or electric tools. mobile crane bearing When installing these bearings, the road test by observing the dashboard ABS alarm pin to change the bearing operation.
Equipped with ABS wheel hub bearing magnetic thrust ring, thrust ring mounted in order to determine which side, you can use a small light near the edge of something * bearings, magnetic bearings will be attracted by it generated. When installing a magnetic thrust will take the side of the ring pointing inside, is on the ABS sensor. Note: Incorrect installation may lead to functional brake system failure.
Many of the bearings are sealed, this type of bearing is not needed throughout the life of the grease increases. Other non-sealed bearings such as double row tapered roller bearings in the installation must be added grease. Because different lumen size of the bearing, it is difficult to determine how much of the added fat, the most important thing is to ensure that the grease bearing if too much fat, when the bearing is rotating, the excess conical bearing oil will bleed. General Experience: During installation, the total amount of oil to account for 50% of the bearing clearance.
Install the lock nut due to the different types of bearings and bearing housings, the size difference between the torque is great. Note reference to the relevant instructions.

2014年10月27日星期一

wheel bearing Precautions Wheel Bearing

Wheel Bearing worn or damaged wheel bearing or hub units will happen to your vehicle and the cost of higher anachronistic failure in traveling the road, or even damage to your safety. Wheel bearings in use and installation Please note the following:
1, in order to ensure maximum safety and reliability, it is recommended that you no matter how long the age of the vehicle should always check the wheel bearings - note bearing for wear marine crane bearing early warning signals: including any friction noise when rotating or turning wheel suspension combination when the deceleration is not normal.
Rear-wheel drive vehicle is recommended for the vehicle to 38,000 km is to deal with the front wheel hub bearing lubrication. When replacing the brake system, check the bearing and replace the seal.
2, If you hear noise emitted wheel bearing parts, first of all, it is important to find the location of the noise occurs. There are many moving parts may produce noise, but also may be some rotation member and the rotating member occurs without contact. If the confirmation is bearing noise, bearing may be damaged and need replacing.
3, because the front wheel bearing failure on both Single Row Ball Slewing Bearing sides led to similar working conditions, so even if only one bearing bad, it is recommended to replace in pairs.
4, wheel bearing more sensitive, in any case need to adopt the right approach and the right tools. In storage and during installation, the bearing parts can not be damaged. Requires a large number of bearings pressed into the pressure, so the need of special tools. Be sure to reference vehicle manufacturers instructions.

2014年10月25日星期六

LYHY deck crane bearing Repair and maintenance

How wheel bearing repair and maintenance
Automotive wheel bearings is important to walk parts. Wheel bearings reduce friction chassis bears during the operation, the task of maintaining normal driving the car. If a wheel bearing failure, single direction thrust ball bearing may cause the phenomenon of noise, deck crane bearing fever, especially the front wheel is more obvious, easily lead to runaway direction dangerous phenomenon. Therefore, the wheel bearings must be maintained on schedule.
Check wheel bearings
(1) Check the tightness of wheel bearings, first inspected the car at one end of the wheel hub axle set up, with the support car stool, wood and other appliances to cover the car a conical bearing good car safely stand.
(2) Rotate the wheel a few laps examined to see whether the smooth rotation, if there is no abnormal noise. If the rotation is not smooth and there is friction sound, indicating that the brake part is not normal; if there is no noise, when the rotation is not smooth and tight loose, indicating that the bearing part is not normal. When the above irregularities should dismantling the hub. For a small car, check wheel bearings, with both hands up and down the side of the tire, the tire pulled his hands back and forth, repeat several times. If normal, then there should be no Songkuang and arrest feeling; If there are obvious Songkuang swing feel, should be overhauled wheels.
(3) Check the braking areas. Usually when marine crane bearing checking wheel bearings, with wheel brake inspection, if there are traces of oil inside of the tire, probably the brake cylinder or brake lines caused by the oil spill, it is timely to identify the reasons, be excluded.

2014年10月23日星期四

wind power bearing Wheel Bearing Maintenance

Before removing wheels, wheel maintenance should do the preparatory work, the car parked and set up axles, in order to ensure the maintenance of security operations.
(1) Remove the hub shaft head decorative conical bearing cover, dust cover;
(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If disc brakes, the brake should be removed, and then used pliers to remove the lock ring or locking pin.
(3) with a special tool to remove the wheel hub;
(4) scrape bearings, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and wipe dry with a cloth, wipe with a cloth wheels last cavity.
(5) Check the wheel bearings and bearing races, found cracks, fatigue spalling and loose roller bearings and other phenomena, replace bearings. If you find pitting on the bearing race, single direction thrust ball bearing it should replace the bearings.
When cope with the situation (6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the largest wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Burr is not allowed to play, pitting the journal to narrow the gap.

2014年10月21日星期二

wheel bearing

Upon completion of all parts meet the requirements, the inner bearing grease after release hub.
When grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge from the other side of the bearing. In the hub and shaft Double Row Ball Slewing Bearing cranial cavity Apply a thin layer of grease to make it play a role in rust. Note that the hub cavity do not apply too much grease, otherwise it will affect the cooling and braking.
The hub and the outer bearing back onto the journal, hand-axis head adjustment nut, and then use the required shaft torque wrench to tighten the adjustment nut. After tightening the nut, turn the wheel a few times to be around to see the bearing installation; on the other hand, by turning the bearing and seat properly fit. At this time bearing tightness appropriate wheels to rotate freely and not feel the axial clearance.
Finally, in order to install the locking plate, fixing nut, tires, dust cover and decorative cover and other parts.
Wheel bearings adjusted, with some marine crane bearing mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, is caused by the bearing adjustment too tight, should be re-adjusted appropriately relaxed bearing tightness.
Non-normal wheel bearing damage causes
In the repair process, often found that some cars have a greater driving noise, no abnormal tire wear inspection, turn the wheels on the lift no abnormal sound. This phenomenon is often caused by abnormal wheel bearing damage caused by the so-called non-normal means of bearing damage caused by the installation of. Automotive wheel bearings are generally double row ball bearing, at the time of installation of the bearing installation if you use a hammer percussion, or when the bearing is installed into the bearing inner race of the bearing by pressing installed, thin wall bearings will cause one side of the bearing raceways damage. Noise when the vehicle is traveling, and when the wheelie is better since the raceway side, and therefore noise was heard. Correct installation operation is the key to long life bearings.

2014年10月19日星期日

LYHY deck crane bearing With ABS sensor wheel hub bearing units

As more and more cars equipped with ABS, ABS function is also growing. To solve the wheel speed sensor wheel speed to provide a signal to the ABS costs exist, installation and signal quality and other aspects of the development of the integrated ABS pulse generator hub bearing unit.
Wheel bearing units with ABS sensors, conical bearing including flanges, ring gear rotating body, the seal assembly and hub with ABS sensors on the wheels, ABS sensor ring magnet rotating body suit on, and with the phase complexes; rotating body and a ring gear fixed to the flange was connected. ABS sensor includes a housing, the magnet and the coil, the ring magnet fitted over the rotating member, the rotating member fitted with the ring magnet; coil via a signal line and a connector. Rotating body and flange ring was spline connection. End face is provided with a flange with bolt holes directly with suspension, brakes and tires connections. Hole in the flange has splines can be used in conjunction with a constant velocity drive shaft. The utility model is beneficial effect: the structure to replace the original car steering Double Row Ball Slewing Bearing knuckle, wheels, bearings portfolio, both the three functions are integrated, but also greatly reduces the size of the original structure, reducing the weight, but also greatly improving the reliability.

2014年10月17日星期五

wind power bearing the surface cleaning method:

Non-standard and standard bearing sizes bearing structure is not on the table belongs to the non-non-standard bearing, which is produced according to customer requirements such as bearings. Non-standard internal and external 49 standard 50 like nothing else. That 49 is a non-standard size structure bearing according to the customer that you have to book than otherwise you know that 49 is a hybrid or 50 GB.
There is not the same structure. For example, some multi-ball roller. Or less. This rare
Generally be universal full name is non-standard bearings
Non-standard bearings rust methods
1, surface cleaning: cleaning must be in accordance with the nature of the surface rust and the prevailing conditions, the appropriate method is selected. Commonly agricultural bearings used solvent cleaning, chemical treatment and mechanical cleaning method to clean.
2, the surface was cleaned by washing by filtration and dried in the drying compressed air, or a dryer 120 ~ 170 ℃ is dried, dry clean gauze can also be used.
Second, anti-rust oil coating method:
1, soak method: Soak in some small items using anti-rust oil, allowed a layer of rust on the surface adhesion method grease. The film thickness can be achieved by controlling the temperature or viscosity rust preventive oil.
2, brush or spray for NA immersion outdoor construction equipment or special shape products, we should pay attention when brushing does not produce accumulation, but also pay attention coated to prevent leakage.
3, spray some large rust-proof material coated with oil offshore crane bearing immersion method can not be used, usually with about 0.7Mpa pressure spraying compressed air filter in the air cleaner place. Spray application of anti-rust oil or solvent dilution thin rust oil, but it must be used to improve fire safety and labor protection measures.