NTN 51212

Thrust · Open

The seat — 60 MM × 95 MM × 26 MM

Bore

60 MM

Outside dia

95 MM

Width

26 MM

Type

Thrust

Seal

Open

Clearance

CN (Normal)

Precision

Dynamic C

59.2 kN

Static C0

140.0 kN

10 other designations in the catalogue share this bore × outside diameter × width. Each was compared on the four fields every bearing row carries — Type, Seal, Clearance, Precision — as recorded, case- and separator-insensitively. All four agreeing puts a designation in the first list; anything else, a difference or a blank, puts it in the second with the fields named.

Candidates at the recorded dimensions above

May substitute — 0 designations

No designation in this seat matches this part on all four compared fields.

Check before substituting — 10 designations

Part number	Manufacturer	C	Differs from this part
81212 TN	NTN	137.0 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/SP	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/SPVR521	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/SPW33	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/SPW33VR522	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/UP	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/UPVR522	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 KTN/VQ055	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 TN/SP	NTN	73.7 kN	Type: Cylindrical — this part: Thrust
NN 3012 TN/SPW33	NTN	73.7 kN	Type: Cylindrical — this part: Thrust

What this sheet is — and what the catalogue did not say

The envelope is recorded dimensions only: the same bore, outside diameter and width. Every designation above shares all three, or it would not be on this page.
The four compared fields are Type, Seal, Clearance, Precision. Two recorded spellings were counted to mean one value and are read as one: CN/Normal = CN, and ABEC-1/P0 = P0. A third precision spelling, P0/Class4, is deliberately not equated with either — the catalogue's meaning for it has not been sourced, so it lands in the warnings where both spellings are printed for the reader to judge.
A blank is a difference. Missing is the absence of the proof, not the proof.
Cage material and ring material are never compared: the catalogue records neither, on any bearing row.
Suffixes the catalogue does not record separately — a snap ring (NR) and anything else outside those four fields — are not compared, and this sheet does not claim they match.
Ranking is recorded dynamic load, strongest first, with an unrecorded rating ranked last. It orders the lists; it is not a verdict.
Compiled from catalogue records. This is not a manufacturer interchange list, no manufacturer has confirmed any line on it, and it does not know what job the bearing is doing. Verify before fitting.

Anyone with this link can view this part and its recorded candidate comparison.

BEARINGBRAIN.COM/PART/51212/SUBSTITUTE