Needle Bearings Radial Structure

Needle Bearings Radial structure

Needle roller bearings features and uses:

The roller bearing is equipped with a thin and long roller (roller diameter D ≤ 5mm, L / D ≥ 2.5, L for the roller length), so the radial structure is compact, its inner diameter and load capacity and other types of bearings , The smallest diameter, especially for radial installation of the size of the bearing support results. According to the use of different occasions, can be used without the inner ring bearing or needle roller and cage components, then match the bearing surface and the surface of the casing hole directly as the bearing inner and outer rolling surface, in order to ensure the load capacity and operating performance With the same ring bearing, shaft or shell hole raceway surface hardness, machining accuracy and surface quality should be similar to the bearing ring raceway. Such bearings can only withstand radial loads.

Needle roller bearings are defined

 The needle profile is slightly contracted at the proximal end. The results of needle roller and roller thread contact correction can avoid destructive edge stress. The roller is supported by a high-rigidity outer ring, Bear a huge load. To remove the stress, support the outer ring of the wheel with a curved design, curved roller with a single, double seals, without seals, with a variety of seals and other models. Sealed with grease storage space, to provide long-term lubrication of lithium-based grease, and extend the lubrication interval. The sealing ring is made of skeleton nitrile rubber or ST12 and its operating temperature range is -30 ° C to + 100 ° C or -30 ° C to + 180 ° C. The compact curve roller can withstand heavy loads and high performance. RSTO outer ring without ribs, no inner ring support roller. Needle roller bearing installation precautions

Needle roller bearing installation:

1: Mechanical installation (cold installation)

Suitable for small size bearings (D <= 50mm)

2: heating installation (hot)

All cylindrical bore bearings

3: hydraulic installation

Internal control with tapered bearings, especially medium and large bearings

Installation Precautions:

1: keep the bearing and working environment clean

2: Move and place the bearings in the correct way

3: to avoid the roller to withstand the installation force

4: different with the choice of different installation methods

5: the correct internal residual oil gap

Requirements for installation tools:

1: safe

2: fast

3: Do not damage the bearing

4: continuous work (in some cases)

5: easy to operate

6: durable