Different Types Of Installation 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. This type of roller is called a needle roller. 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.

Characteristics of Needle roller bearings

Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact, the inside diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, especially suitable for the radial installation size of the limited supporting structure.

Application of Needle roller bearings

Roller needle roller bearing is suitable for printing machinery, forage machinery, agricultural machinery, CNC equipment guide rail roller, conveyor line, etc.

Different types of installation of needle roller bearings

Needle roller bearing is a roller bearing with cylindrical roller, relative to its diameter, the roller is thin and long, this roller is called needle roller. According to the different types of needle bearings, the specific installation methods of different types of needle bearings are as follows:

Installation of full - loaded needle roller bearings

1. When installing the full needle roller bearing, it is carried out by the auxiliary sleeve;

2. The auxiliary roller or auxiliary sleeve holds the needle and does not make it fall out. The journal lifts the needle with its own chamfering;

3. 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.

4. The outer diameter of the auxiliary roller and the auxiliary sleeve should be 0.1-0.3mm smaller than the shaft diameter. When installing, the inner surface of the outer ring of the bearing should be coated with grease first, and the needle should be placed close to the inner surface (clearance should be left when the last needle is placed).

5. Then push the auxiliary roller or auxiliary sleeve instead of the journal or bearing inner ring into the outer ring hole and align its end face with the end face of the mounting shaft or the end face of the bearing inner ring installed on the shaft.The pressure is then applied by striking with a press or hand hammer.

Installation method of needle roller bearing

1. Coat the outer diameter of the auxiliary sleeve with a thin layer of lubricating oil and insert it into the outer ring of the bearing, so that the auxiliary sleeve and the outer ring of the bearing form an annular hole, and then install a needle rolling in the annular hole.

2. After installing the needle roller, push out the auxiliary sleeve with the working shaft.

Needle roller bearings without inner ring or outer ring

1. During installation, the rolling surface of the shaft or shell hole can be coated with a thin layer of grease first, and the needle can be attached to the grease of the installation part in turn.

2. When placing the last needle roller, there should be a gap, and the size of the gap should be 0.5mm on the circumference of the needle roller bearing.

3.Can not put the last needle roller hard squeeze into, or less than one needle roller, because hard squeeze, the bearing will be stuck and can not rotate;

4. When the load is less, the clearance is too large, which is easy to cause the twisting and breaking of the needle roller when the bearing is running.

Stamped outer ring needle roller bearing installation mode

1. Because the outer ring wall is very thin, needle roller bearings should not be installed by hammering, but should be pressed in by a press.

2. Because the pressure is not uniform when the hand hammer is beating, it is easy to cause local deformation of the outer ring of the needle roller 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 .