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NTN self-aligning ball bearings combine two rows of balls with a spherical outer-ring raceway. This construction accommodates misalignment within the bearing’s intended conditions. Recognise that geometry without confusing it with a double-row deep groove ball bearing or spherical roller bearing merely because their names appear related.
See all NTN bearings references →NTN guide →Self-aligning ball bearings from all brands →NTN tapered roller bearings →NTN angular contact bearings →
References 1200S, 1201S, 1204S and 1204SK appear in this catalog line. Preserve final letters and copy the complete designation from a readable source. Similar numeric blocks do not establish identical mounting arrangements.
Record any separate retention components associated with the bearing. A visible bearing number alone may not identify the assembly when the drawing shows additional seating or retention parts. State which components remain in service and which need replacement.
Interpret self-alignment within the actual support. Describe bearing position, housing parts and documented shaft arrangement. A family’s ability to accommodate misalignment does not eliminate the need to inspect housing condition, retention and mounting surfaces.
During repair, photograph the position before dismantling and separate wear observations from replacement identification. Report damage to the shaft or housing. Do not attribute it to a bearing variant or assume changing the variant will correct the assembly without evaluation.
Provide MR with the NTN designation, quantity and equipment position. Include a mounting view and maintenance drawing where available. For missing inscriptions, add a sketch identifying every dimension and adjacent part. A list of diameters without positional context is insufficient to reconstruct the configuration.
No. Other constructions also have two rows; raceway geometry and designation distinguish the family.
No. Support condition and retention remain part of the assembly review.
Yes, where they form part of the mounting. Their references describe the configuration to be preserved.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
The NTN S series self-aligning ball bearing is a radial bearing with two rows of balls and a spherical raceway in the outer ring, which allows it to self-align and compensate for angular misalignment between shaft and housing. It is used in applications where shaft deflection or mounting errors are unavoidable. MR Accesorios Industriales sells these products in sizes from 10 mm bore diameter. Request a quote for your part number on WhatsApp.
The NTN SK series self-aligning ball bearing is a self-aligning bearing with two rows of balls, designed to carry radial loads and compensate for angular misalignment between shaft and housing. Its spherical outer raceway allows the inner ring to oscillate, absorbing mounting errors or shaft deflection. It is used in equipment where perfect alignment is not guaranteed, such as fans, pumps, conveyors and agricultural machinery. MR Accesorios Industriales sells the NTN SK series in Buenos Aires, Argentina.
Just the manufacturer part number is enough: we will quote it and provide dimensions and equivalents via WhatsApp or email.
