Supply of physical ring needle roller bearings NA4913

 Physical ring needle roller bearings are composed of one or two rings and needle roller cage with a group of components. It has a smaller size and

A high carrying capacity.tungsten carbide inserts, such bearings to meet light weight, small footprint, transmission power requirements. According to

Different applications, can be used with or without inner ring of the bearing inner ring.
Entity major structural type ring needle roller bearings
Structural features bearing code
STO RSTO NA22 / 8 2RS NA2200 2RS bearing rollers without axial guidance NA22 2RS series
NK NKS RNA49 RNA48 double-wall outer row without an inner ring
NA59 RNA59 double-wall outer row
NKI NKIS NA49 NA48 double-wall outer row with an inner ring
RNA69 Dual Edge double row outer ring without inner
NA69 Dual Edge double row outer ring with an inner ring
RNA49 .. RS RNA49 .. 2RS-sided or double-sided seal sealing
NA69 .. RS NA69 .. 2RS-sided or double-sided sealed double row sealed
RNAO outer wall single or double row without an inner ring
NAO outer wall single or double row with an inner ring
RNAV row without an inner ring outer double wall
NAV single outer double wall with an inner ring
I R LTR inner series
BR, BRI, NCS, MR, HJ inch series needle roller bearings with inner ring
Outer double wall (or double lock ring) with cage needle roller bearings NA, NKI-type
Inner and outer rings can be installed separately (with lock ring, full needle roller and cage), permissions, high speed, two kinds of single and double row.
If the shaft can not be used as a raceway, ie If the shaft hardened by grinding impossible or uneconomical when the inner ring may be the use of such

Needle roller bearings.
Physical ring needle roller bearings without inner ring needle roller bearings with cages
NA, NKI type bearings without inner ring is RNA, NK-type needle roller bearings.
Such bearings without inner ring for radial mounting dimensions restricted support structure to match the journal and bearing directly as rolling

Surface. Shaft as a raceway surface, the hardware must be quenched and polished, and only be processed to the appropriate size and shape accuracy

When set to a higher life needle roller bearings and running accuracy. Also, because without inner diameter of the shaft can therefore be appropriate

When the increase, which also increases the rigidity.
Physical ring needle roller bearings with or without inner ring sealed needle roller bearings
Single or double sealed needle roller bearings can effectively prevent the intrusion of dirt, the bearing has filled the right amount of lithium grease.

This kind of bearing inner ring width than the outer ring, which makes the bearing on the shaft relative to the bearing housing with a little displacement can also be sealed to ensure a good and free

To bearing contamination. Bearing inner ring also has lubrication holes can be configured according to the needs of the outer or inner supplementary lubrication.