Machined Needle Roller Bearings

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.

Key Features

• 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

Common INA Series

• 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

Typical Applications

• Gearboxes and transmissions

• Automotive components

• Machine tools

• Industrial machinery

• Construction and agricultural equipment

Materials

• Rings: High-quality hardened bearing steel

• Needle rollers: Bearing steel

• Cage: Steel, brass, or polyamide

Advantages of INA Machined Needle Roller Bearings

• Higher load ratings compared to drawn cup bearings

• Superior dimensional stability

• Better performance under shock loads

• Suitable for demanding industrial applications