NSK 3210B-2RSRTNG

NSK 3210B-2RSRTNG Double Row Angular Contact Ball Bearing

Description

The NSK 3210B-2RSRTNG is a robust double row angular contact ball bearing designed to handle both radial and axial loads in both directions. Its design is similar to two single-row angular contact ball bearings arranged back-to-back, but with a narrower width. This bearing is ideal for applications where rigid guidance of a shaft is required.

Specifications

• Manufacturer: NSK
• Type: 3210B-2RSRTNG
• Product Type: Double Row Angular Contact Ball Bearing
• Bore Diameter: 50 mm
• Outer Diameter: 90 mm
• Width: 30.2 mm
• Contact Angle: 40 degrees
• Seals: Contact seals on both sides (2RS)
• Cage Material: Glass fibre reinforced polyamide 66 (TNG)
• Weight: Approx. 0.73 kg

Label Info

• Brand: NSK Bearings
• Model: 3210B-2RSRTNG
• Part Numbers: AR3N5, 705

Application

This type of bearing is commonly used in pumps, compressors, gearboxes, and industrial machinery where combined loads and precise shaft positioning are critical.

Country of Origin

Made in Germany.

CO2 Impact

Opting for a reconditioned bearing like this one prevents the emission of approximately 1.46 kg of CO2, which is associated with the production of a new steel component. This saving is comparable to driving a standard passenger car for 7 kilometers.

Availability

This item is in stock and ready for immediate dispatch. It is a new-old-stock (NOS) item in its original, opened packaging. The bearing itself is sealed in its factory plastic. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does the ‘2RSRTNG’ suffix signify in the model number?

The suffix ‘2RS’ indicates that the bearing is equipped with contact seals made of nitrile butadiene rubber (NBR) on both sides. ‘RTN’ or ‘TNG’ specifies a glass fibre reinforced polyamide 66 cage, which is lightweight and suitable for high speeds.

What is the main advantage of a double row angular contact bearing over two single row bearings?

A double row bearing provides a more compact and rigid arrangement. It can accommodate combined loads in both directions within a smaller axial space, simplifying the machine design and assembly process compared to using two separate single row bearings.

Is this bearing suitable for high-speed applications?

Yes, the polyamide (TNG) cage allows for higher rotational speeds compared to a standard steel cage due to its lower weight and favorable sliding properties. However, operating temperature limits for polyamide (typically around 120 deg C) should be considered.

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Last Update: Friday, March 13, 2026