Lot of 3 Koyo Nachi NTN Ball Bearings 6216 2rs, NU 313, 216Z NEW

(1) The Koyo 6216 2RS C3 is a deep groove ball bearing with an 80mm inner diameter, 140mm outer diameter, and 26mm width. It features rubber seals on both sides (2RS2 cap R cap S2𝑅𝑆) for protection against contaminants and has a C3 internal clearance, which allows for greater thermal expansion and misalignment than a standard bearing. Prices vary by vendor but are generally around $100-$150, as seen on eBay and Motion Industries.

(1) The Nachi NU 313 is a single-row cylindrical roller bearing with a 65mm inner diameter, 140mm outer diameter, and 33mm width. Its price varies by vendor, ranging from approximately $150 to over $200
Key features include a high radial load capacity, the ability to accommodate axial expansion due to its free-end design, and a steel cage.

(1) The NTN 216Z designation refers to two different potential bearings: the general series 216Z deep groove ball bearing or the specific NTN catalog number BL216Z deep groove ball bearing, both having similar core specifications.
Description and Specifications
The NTN 216Z is a single-row deep groove ball bearing. This type is the most common and versatile rolling element bearing, designed to accommodate radial and axial loads in both directions.
Key specifications and features include:
• Dimensions:
o Bore (Inner Diameter): 80 mm (3.15 in)
o Outside Diameter: 140 mm (5.512 in)
o Width: 26 mm (1.024 in)
• Enclosure: Z indicates a single metal shield on one side, protecting against larger contaminants while allowing for smooth operation.
• Material: Typically made from high-carbon chrome steel with a pressed steel cage.
• Precision Class: ISO Class 0 (ABEC 1).
• Radial Internal Clearance: Standard (CN).
• Load Ratings:
o Dynamic Load Rating: Approximately 84.12 kN.
o Static Load Rating: Approximately 84.80 kN.
• Limiting Speed:
o Grease Lubrication: 4,000 RPM.
o Oil Lubrication: 4,700 RPM.

Price
• An NTN 6216Z has been listed for around $122.69 - $136.69 USD from online retailers.

NOTE: In the photos, it looks like there is rust on the bearing, but it is NOT rust, it is grease.

Item ID 110425-7