INA Steel Cage Open End Precision Needle Roller Bearing (RNA4904RS)
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- Radial needle roller bearing for applications with high dynamic and static loads
- High load-carrying capacity with a reduced cross-section for use in restricted spaces
- Steel cage guides and evenly spaces rollers for reduced friction, vibration, and noise
- Through-hardened, high-carbon chromium steel rollers for heat tolerance and durability under heavy loads
- Lip contact seal on one end to help retain lubricants and exclude contaminants
- Roller bearings use rolling elements to maintain a separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types - ball, cylindrical, spherical, barrel, needle, spindle, or tapered. Roller bearings can be open on both ends (a shaft can pass through) or open on one end and closed on the other. An open end can be sealed or shielded to protect the bearing from solid contaminants and moisture that could reduce its lifespan. If an end is sealed, the sealing component is an elastomer lip that contacts the shaft. If it is shielded, the shielding is a non-contact lip, usually made of metal. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.
- Outside Diameter: 37
- System of Measurement: Metric
- Size: Single Seal
- Bore Diameter: 25 mm
- Overall Width: 17 mm
- Max Rotational Speed: 7500 RPM
- mm Material Type: Steel
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