NTN 6310 NR

Deep groove ball · Open

The seat — 50 MM × 110 MM × 27 MM

Bore

50 MM

Outside dia

110 MM

Width

27 MM

Type

Deep groove ball

Seal

Open

Clearance

CN (Normal)

Precision

ABEC-1 (P0)

Dynamic C

65.0 kN

Static C0

38.0 kN

163 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 — 25 designations · top 20 shown

Part number	Manufacturer	C	C0
6310-ZNR	NTN	65.0 kN	38.0 kN
6310 JEM	NTN	65.0 kN	38.0 kN
6310 N	NTN	65.0 kN	38.0 kN
6310 NRJEM	NTN	65.0 kN	38.0 kN
6310 RSJEM	NTN	65.0 kN	38.0 kN
6310 ZJEM	NTN	65.0 kN	38.0 kN
6310 ZNBRJEM	NTN	65.0 kN	38.0 kN
MRC.310S	NTN	65.0 kN	38.0 kN
MRC.310SFF	NTN	65.0 kN	38.0 kN
MRC.310SFFG	NTN	65.0 kN	38.0 kN
MRC.310SG	NTN	65.0 kN	38.0 kN
310	NTN	64.4 kN	52.0 kN
310-ZNBR	NTN	64.4 kN	52.0 kN
310-ZNR	NTN	64.4 kN	52.0 kN
310 NR	NTN	64.4 kN	52.0 kN
MRC.310M	NTN	64.4 kN	52.0 kN
MRC.310MF	NTN	64.4 kN	52.0 kN
MRC.310MFF	NTN	64.4 kN	52.0 kN
MRC.310MFFG	NTN	64.4 kN	52.0 kN
MRC.310MFG	NTN	64.4 kN	52.0 kN

Check before substituting — 138 designations · top 12 shown

Part number	Manufacturer	C	Differs from this part
21310 E	NTN	159.0 kN	Type: Spherical — this part: Deep groove ball
21310 E/C3	NTN	159.0 kN	Type: Spherical — this part: Deep groove ball Clearance: C3 — this part: CN (Normal)
21310 EK	NTN	159.0 kN	Type: Spherical — this part: Deep groove ball
21310 EK/C3	NTN	159.0 kN	Type: Spherical — this part: Deep groove ball Clearance: C3 — this part: CN (Normal)
N 310 ECP	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball
N 310 ECP/C3	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball Clearance: C3 — this part: CN (Normal)
NJ 310 ECJ	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball
NJ 310 ECJ/C3	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball Clearance: C3 — this part: CN (Normal)
NJ 310 ECM	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball
NJ 310 ECM/C3	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball Clearance: C3 — this part: CN (Normal)
NJ 310 ECM/C4	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball Clearance: C4 — this part: CN (Normal)
NJ 310 ECML	NTN	127.0 kN	Type: Cylindrical — this part: Deep groove ball

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/6310NR/SUBSTITUTE