YDTech® manufacturer of entity ferrule solid collar needle roller bearings with inner rings,seals,shoulders or not; supplier of physical bushed ring (entity type) needle roller bearings (NKIS,NA,RNA,NK,NKS,RNA,NKI)in china..

entity ring needle roller bearing, the commonly used physical ring needle roller bearing is constituting and RNA. entity ring needle roller bearing used for machine tool, automobile gearbox, it has the advantage of radial section size small, bearing the radial load. Standard entity ring needle roller bearing is keep frame, so speed is higher, can meet the requirements of the machine tool, automobile gearbox.

with or without inner ring seal needle roller bearings: single or double sealed needle roller bearings can effectively prevent the intrusion of dirt, fill bearing has the right amount of lithium grease. this kind of bearing outer ring width than the inner ring, which makes the bearings in the shaft bearing box with a little relative displacement can also ensure a good seal and prevent injury to bearing contamination. Bearing inner ring also has oil holes, according to the need for configuration by the outer or inner ring to add lubrication.

outer double-wall needle roller bearings with cage, NA, NKI-type install inner and outer rings, respectively (with lock ring, a full set of needle roller and cage), authority, high speed, single and double row of two points.

types of entity type (entity ferrule) needle roller bearings

entity type(physical ring) needle roller bearings

if the axis can not be used as a raceway, the If-axis milling of hardened impossible or uneconomical use of time, you can use these needle roller bearings with inner ring.

NA, NKI-type bearings without inner ring is the RNA, NK-type needle roller bearings. such bearings without inner ring, radial mounting dimensions for the supporting structure of the restricted, and the bearing journal to match directly as rolling surface. as the shaft raceway, hardware and grinding must be quenched, and only to the processing to the appropriate size and shape accuracy, the full set of needle roller bearings to the life and operation of high precision. Meanwhile, without inner diameter of the shaft can therefore be appropriate to increase, thus increasing the rigidity.