Needle Roller Bearings with Machined Rings

Needle Roller Bearings with Machined RingsWe supply a wide assortment of needle roller bearings with machined rings. Needle Roller Bearings with Machined Rings are in separable design. They are high stiffness with low cross-section. Needle roller bearings with machined rings are made of carbon chromium bearing steel. We supply bearings with or without flanges on the outer ring.

Product Specification

Bearing No.:	RNA4901
Main dimensions	16x24x13mm
Inside diameter(ID d)	16 mm
Outside diameter(OD D)	24 mm
Thickness/width(T/B/H)	13 mm
Reference speed	22000 r/min
Limiting speed	26000 r/min
Mass(kg)	0.017
Type	Needle Roller Bearings
Description	Needle Roller Bearings with Machined Rings

Types of needle roller bearings with machined rings

Bearings with flanges

• are available open (without seals) or sealed on one or both sides
• are available with or without an inner ring
• with D ≤ 17 mm (Fw ≤ 10 mm), are available with non-separable closure rings that act as flangesThe flanges on more oversized bearings are an integral part of the outer ring, and the bearings have an annular groove and one or more lubrication holes in the outer ring.
• are generally designed as single-row bearings, except for RNA 69 and NA 69 series double-row bearings with D ≥ 52 mm (Fw ≥ 40 mm)The roller and cage assembly and outer ring of a needle roller bearing with flanges form a non-separable unit.

Bearings without flanges

• are separable, i.e., the outer ring, needle roller, cage assembly, and inner ring can all be mounted separatelyNeedle roller and cage assemblies can, depending on the arrangement design, either be mounted:
  • together with the outer ring
  • together with the shaft
  • together with the inner ring
  • between the outer ring and shaft or inner ring as the final step
  However, needle roller and cage assemblies and bearing outer rings must always be kept together as supplied.
• are generally designed with one needle roller and cage assemblyHowever, wide sizes incorporate two needle roller and cage assemblies immediately adjacent to each other and have an annular groove and a lubrication hole in the outer ring.

Features of needle roller bearings with machined rings

• Low cross-sectionNeedle roller bearings offer a very compact solution in applications with less space.
• High load-carrying capacityDespite their low cross-sectional height, they have a high load-carrying capacity.
• Separable designThe possibility of assembling inner and outer rings separately permits interference fits for shaft and housing and enables easy maintenance inspections.
• High stiffnessOwing to their large number of small-diameter rollers, needle roller bearings with machined rings have high stiffness.
• Accommodate axial displacementNeedle roller bearings with machined rings can accommodate axial displacement. The bearing does not limit the displacement distance when using raceways on the shaft.

Application of needle roller bearings with machined rings

needle roller bearings with machined rings are widely applied in Instruments, motors, internal combustion engines, machine tool spindles, home appliances, forming machines, home appliances, extruders, forming machines, and printing equipment.

Company Information

We are a professional bearing exporter in China, producing many bearings in different sizes and sizes. We can provide you with excellent service in a wide range of bearings with world-class quality, such as deep groove ball bearings, spherical roller bearings, spherical ball/roller bearings, and cylindrical roller bearings, tapered roller bearings, angular contact Ball bearings, etc. Bearings can also provide OEM services according to customer requirements. We adhere to strict global standards, which is why we can provide you with a wide range of bearings of world-class quality. We have always adhered to the principle of "integrity-based, quality first, customer foremost." We are ready to use our sincerity to serve every global customer for long-term and win-win cooperation.