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This INA caged drawn cup needle roller bearing has a steel cage and seals on both ends, and is suitable for applications with high dynamic loads. It has a smaller cross-section than a machined needle roller bearing for use in restricted mounting spaces. The steel cage provides guidance and even spacing of the rollers for minimum vibration and noise at high speeds, and lip contact seals at both ends help retain lubricants and exclude dirt and moisture. The bearing is factory lubricated with lithium soap grease. The needle rollers are made of through-hardened, high-carbon chromium steel for durability and heat tolerance. This drawn cup needle roller bearing meets Deutsches Institut für Normung standard DIN 618-2 for quality assurance, and is used in various applications, such as automotive and truck transmissions, agricultural and construction equipment, pumps and compressors, and two-cycle engines, among others.
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.
INA manufactures bearings for automotive and industrial applications. The company is part of the Schaeffler Group, founded in 1946 in Herzogenaurach, Germany, and meets International Organization for Standardization (ISO) standards 9001:2008 and TS 16949:2009 for quality assurance.
Customer
Reviewed in the United States on October 20, 2023
These are factory replacements for your e30 m20 throttle body that is leaking vacuum through the throttle shaft seals. You will most likely have to dremel the old ones out, but once you do these will press fit right in and seal up your shaft. Shipping was a little slower than I would have preferred but once they got here replacing the bearings was a relatively easy job.
Robert Cullman
Reviewed in the United States on July 26, 2022
Fitment was great for my e30 throttle body
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