MRC7210DSAngular Contact Ball Bearing, 50x90x20 mm, ABEC 5 Precision, Annular Bearing

Product Description

What this part is

An MRC angular contact ball bearing, 50 mm bore by 90 mm outside diameter by 20 mm wide — the 72-series envelope corresponding to metric 7210. MRC called these annular bearings; the range is now part of SKF.

Decoding the designation

7210 — angular contact ball bearing, 72 dimension series, 50 mm bore
DS — an MRC suffix. MRC’s suffix scheme deliberately departs from industry convention (its ZZ, for instance, means rubber seals where every other maker uses ZZ for metal shields), so DS is carried here undecoded rather than read across from another brand’s meaning
0016 — a batch or order reference marked on the carton, not a specification
ABEC 5 — precision class, equivalent to ISO class P5

Correcting the source data

The description was pure eBay boilerplate with no product content and has been replaced. The claimed US manufacture has been dropped — MRC is an American marque but no origin marking is documented for the item in hand. The word “Set” in the old title has not been carried into any quantity claim on this page, for the reason set out below.

What we deliberately have not stated

Contact angle is left blank. MRC’s own numbering does not expose it in this designation, and reading it across from another maker’s 7210 would be a guess with real consequences — contact angle determines how much axial load the bearing takes and in which direction, and getting it wrong wrecks a spindle. Load ratings and limiting speed are blank for the same reason: no MRC-published figure for the DS execution could be verified, and borrowing an SKF 7210 number would launder a guess into a spec. Boundary dimensions 50 x 90 x 20 mm are the ISO 72-series values and are confirmed.

Quantity and configuration

Stock stands at 31 on this record, and the previous title described the item as a set. Those two facts cannot both be taken at face value — 31 could be 31 individual bearings, or 31 sets, or a residue of split sets. No quantity or set claim is made on this page as a result. Tell us how many you need and we will do a physical count against the shelf before confirming.

Interchange guidance

Same-envelope angular contact bearings include SKF 7210 (MRC’s successor line), NSK 7210, FAG 7210-B and NTN 7210. Because the contact angle of this MRC execution is not established, treat all of these as envelope matches only and verify the angle against your application before substituting. The carton also carries stock reference 3110-00-158-8302, which is a useful search key for defence and MRO parts lists.