Disassembly Methods of Needle Roller Bearings

What is needle roller bearings
Needle roller bearings are roller bearings with cylindrical roller, relative to its diameter, the roller is thin and long. Although has the small section, the bearing still has the high load bearing capacity, the needle roller bearing is equipped with the thin and the long roller, therefore the radial structure is compact, its inside diameter size and the load capacity is the same as other types of bearings, the outer diameter is the smallest, especially suitable for the radial installation size is limited the supporting structure.
The characteristics of needle roller bearing
Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact, the inside diameter and load capacity of the same with other types of bearings, the outer diameter is the smallest, especially suitable for the radial installation size of the limited support results.
According to the use of different occasions, can be used without inner ring of the bearing or needle roller and cage components, at this time to suit the bearing surface of the surface of the shaft and the shell hole directly as inner and outer rolling bearing surface, in order to ensure the load capacity and operation performance and you have the same ring bearing, axis or shell hole hardness on the surface of the raceway, machining accuracy and surface quality should be as a bearing ring raceway.
This kind of bearing can bear only radial load.

Installation of needle roller bearings
The installation of a full load needle roller bearing is usually carried out using an auxiliary sleeve. At this time, the auxiliary roller or auxiliary sleeve holds the needle roller to prevent it from falling out, and the journal lifts the needle roller. As the needle roller bearing slowly moves inward on the journal, the auxiliary roller or auxiliary sleeve will slowly withdraw until it is installed to the working position.        
Disassembly methods of needle roller bearings
Needle roller bearings generally have four disassembly methods, respectively as follows:
1. Tapping method: tap on the bearing inner ring, shielding room tapping force should not be added in rolling element bearings and keep on the shelf, this method is simple, but easily damaged bearings, when bearing, at the end of the shaft, use less than the copper rod of bearing inside diameter or other soft metal materials resist shaft end, lower bearing block, hammer knock gently, can be removed. Application this law should notice the position that pad block places wants appropriate, point of emphasis should correct.
2. Thermal disassembly method: used for disassembly of tightly matched bearings. First, the oil heated to about 100℃ is poured on the bearing to be dismantled with an oil can. After the bearing ring is heated and expanded, the bearing can be pulled out with a puller.
3. Pushing method: press the bearing with the press, the work is stable and reliable, and does not damage the machine and the bearing shielding machine room. There are manual press press, mechanical or hydraulic press press. Note: the press should be on the center of the shaft, not pressure deviation.
4. Pulling out method: the use of special puller, disassembly, as long as the handle is rotated, the bearing will be slowly pulled out. When removing the outer ring of the bearing, the bend Angle of the puller feet should be opened outward; When removing the inner ring of the bearing, the puller feet should be stuck inward on the end face of the inner ring of the bearing.
The price of needle roller bearings
The price of needle roller bearings is affected by many factors such as market,material and quotation.If you want to know the specific price of Needle roller bearings,please contact us to make enquiries.
Supplier of needle roller bearings:BMB Bearings
BMB Bearings is the complete one-stop supplier of OEMs and wholesalers purchasing high-precision, miniature ball bearings, industrial ball bearing related products, as well as related professional services, including world-class engineering and design. If you have any need, please feel free to contact us .