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INA Machined Needle Roller Bearings are high-precision rolling bearings designed to support very high radial loads while providing accurate shaft guidance and long service life. These bearings feature solid machined inner and outer rings with precision-ground raceways, making them significantly more rigid and durable than drawn cup needle roller bearings.
INA offers a wide range of machined needle roller bearing designs, including versions with or without inner rings, with flanges, and with seals or shields, allowing optimal selection for various application requirements.
INA Machined Needle Roller Bearings are high-precision rolling bearings designed to support very high radial loads while providing accurate shaft guidance and long service life. These bearings feature solid machined inner and outer rings with precision-ground raceways, making them significantly more rigid and durable than drawn cup needle roller bearings.
INA offers a wide range of machined needle roller bearing designs, including versions with or without inner rings, with flanges, and with seals or shields, allowing optimal selection for various application requirements.
Solid machined inner and outer rings
High radial load carrying capacity
Excellent running accuracy
Precision-ground raceways
Cage-guided needle roller assembly
High reliability and long service life
NA Series – With inner ring
RNA Series – Without inner ring
NK Series – With flanges, without inner ring
NKI Series – With flanges and inner ring
NKS / NKIS Series – Heavy-duty versions
Gearboxes and transmissions
Automotive components
Machine tools
Industrial machinery
Construction and agricultural equipment
Rings: High-quality hardened bearing steel
Needle rollers: Bearing steel
Cage: Steel, brass, or polyamide
Higher load ratings compared to drawn cup bearings
Superior dimensional stability
Better performance under shock loads
Suitable for demanding industrial applications
NA Series Machined Needle Roller Bearings are precision radial bearings featuring a machined steel outer ring, needle roller and cage assembly, and an inner ring. The integrated inner ring allows these bearings to be used on shafts that are not harde...
RNA Series Machined Needle Roller Bearings are precision radial bearings with a machined steel outer ring, needle roller and cage assembly, but no inner ring. They are designed for applications where the shaft acts as the raceway and is hardened and ...
NA6900 Series Needle Roller Bearings Dimensions Bearing No. d (mm) D (mm) B (mm) Dynamic Load Cr (N) Static Load Cor (N) NA6900 10 22 22 8281 11612 NA6901 12 ...
RNA6900 Series Needle Roller Bearing Dimensions Bearing No. Fw (mm) D (mm) C (mm) Dynamic Load (Cr) N Static Load (Cor) N Weight (g) RNA6900 14 22 22 12800 15600 29 ...
NK Series Machined Needle Roller Bearings are precision-engineered radial bearings with a machined steel outer ring, needle roller and cage assembly, and no inner ring. They are designed for applications where the shaft itself acts as the raceway and...
NKI Series Machined Needle Roller Bearings are precision-engineered radial bearings with a machined steel outer ring, needle roller and cage assembly, and an integrated inner ring. They are designed for applications requiring high radial load capacit...
NKIS Series Machined Needle Roller Bearings are heavy-duty radial bearings designed with a machined steel outer ring, needle roller and cage assembly, and an inner ring. Compared with standard NKI Series bearings, the NKS/NKIS Series features a wider...
NKS Series Needle Roller Bearing Dimensions Bearing No. Fw (mm) D (mm) C (mm) Dynamic Load Cr (N) Static Load Cor (N) Grease RPM Oil RPM Weight (kg) NKS20 20 32 20 178...
NA 4900-2RS Series Dimension Chart Bearing No. d (mm) F (mm) D (mm) C (mm) B (mm) Weight (kg) NA4900-2RS 10 14 22 13 14 0.024 NA4901-2RS 12 16 24...
RNA 4900-2RS Series Needle Roller Bearing Dimension Chart (Without Inner Ring) The RNA 4900-2RS Series consists of machined needle roller bearings without an inner ring, equipped with contact rubber seals on both sides (2RS) and pre-lubricated wit...
RNA 6900-2RS Series Needle Roller Bearing Dimension Chart (Without Inner Ring) The RNA 6900-2RS Series consists of machined needle roller bearings without an inner ring, fitted with double rubber seals (2RS) and factory-filled grease. These bearin...
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