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QZMX Ball Bearing Precision 2021 spring and summer new NA6916 Bearings Roller Max 67% OFF 80x11

QZMX Ball Bearing Precision Roller Bearings NA6916 Bearing 80x11

$109

QZMX Ball Bearing Precision Roller Bearings NA6916 Bearing 80x11

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Product description

Suitable for high-speed operation
The solid collar needle roller bearing has compact structure, small radial size and large load carrying capacity. It is suitable for the parts of which the radial overall size is limited. It is also wide applied to the situation where the shaft or housing has the swinging motion. In general, the needle roller bearing only withstands the radial load, not the axial load. When the shaft has axial load, it can be used in combination with other bearings. However, it does not limit the axial shift of shaft or housing. The limiting rotational speed of needle roller bearing is lower. In high rotational speed of main machine, the needle roller bearing with cage shall be chosen as far as possible. In compassion with other types of needle roller bearings, under the situation of same radial size, the needle roller bearing has the large load carrying capacity and high rigidity but has high friction torque.
This kind of bearing has many series with different structure and size. It is requested that the hardness, processing accuracy and surface roughness of shaft journal surface and rolling surface of outer housing be same as those of the collar of bearing. As for the needle roller with G2 class, the diameter varies within 2μm in group. Except the full complement needle roller bearings, they have the rigid cages, which can correctly guide the parallel axis line of needle roller.
Characteristics amp;classification
Model RNA, NK Needle Roller Bearings Without Inner Ring
The needle roller bearing without inner ring is suitable for the parts of which the radial size is limited. Because of no inner ring, the surface of shaft journal fitted with it is acted directly as rolling surface. It is requested that the surface hardness be no less than HRC60, surface roughness, no more than 0.63μm. This kind of bearing does not limit the axial shift of shaft and housing and has
The bearings are sealed on both sides to keep lubricant in.

QZMX Ball Bearing Precision Roller Bearings NA6916 Bearing 80x11

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