SNR7016CDUJ74Super-Precision Angular Contact Ball Bearing, 80x125x22 mm, 15° Contact Angle, Universally Ground — One Bearing, Half of a Pair

Product Description

What this part is

A single super-precision angular contact ball bearing, 80 mm bore by 125 mm outside diameter by 22 mm wide, in the 70 dimension series. It is one half of a universally ground duplex pair.

Read this before ordering — you are buying one bearing:
The suffix −1/2PR means half of a pair. One bearing, not two. This is the single most common misunderstanding on precision bearings sold out of a split set, and it is worth being blunt about: if your spindle needs a matched pair, this listing on its own does not supply it. Buy two matched halves, or a complete DU set.

Decoding the designation

7016 — angular contact ball bearing, 70 series, 80 mm bore
C — 15° contact angle
DU — duplex, universally ground: the bearing was ground so that two of them mount together to a defined preload with no shimming
J74 — an SNR internal-execution suffix with no published decode; retained as a search term rather than interpreted
−1/2PR — half of a pair; one bearing supplied

Correcting the source data

Three fixes. First, the record carried both a DU designation and an SUL cross-reference (7016-C-T-SUL-P4, plus a Fafnir 2MM9116WI CR SUL). SU and DU are mutually exclusive — a bearing is ground either as a universal single or as a duplex half, not both. The DU reading is kept because it is consistent with the −1/2PR suffix on the primary number; the SUL numbers are retained only as search terms, not as spec. Second, the claimed French manufacture has been removed: no origin marking is documented, and SNR cartons in this stock have previously been found marked otherwise. Third, the add-to-cart copy and shipping promises have gone.

What these specs mean in practice

A 15° contact angle favours speed and radial rigidity over axial capacity — the usual choice for grinding and high-rpm milling spindles. Universal grinding is the feature that makes preload predictable without shims, but it only pays off when the halves you mount together came from the same grind. Mixing an arbitrary 7016C with this one gives you a spindle with an unknown preload, which is worse than no preload at all.

Published ratings and mounting data

No manufacturer-published basic dynamic or static load rating could be verified for this exact designation, so none is stated rather than borrowed from a differently ground or differently caged 7016. Boundary dimensions 80 x 125 x 22 mm are the ISO 70-series values and are confirmed.

Interchange guidance

Same-envelope 15° super-precision bearings include NSK 7016CTYNDULP4, NTN 7016CGD2GLP4, SKF 7016 CDGA/P4A and Fafnir/Timken 2MM9116WI. SNR is part of NTN-SNR, so NTN is the current supply route. If you need the matching half, ask us — split sets often live on adjacent shelves and we may hold its partner.