NTN 6305ZZ

Deep groove ball · 2Z shield

The seat — 25 MM × 62 MM × 17 MM

Bore

25 MM

Outside dia

62 MM

Width

17 MM

Type

Deep groove ball

Seal

2Z shield

Clearance

Precision

ABEC-1 (P0)

Dynamic C

22.5 kN

Static C0

11.4 kN

115 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 — 14 designations

Part number	Manufacturer	C	C0
6305-2ZNR	NTN	23.4 kN	11.6 kN
6305-Z	NTN	23.4 kN	11.6 kN
6305 2ZJEM	NTN	23.4 kN	11.6 kN
6305 2ZNRJEM	NTN	23.4 kN	11.6 kN
305-2Z	NTN	22.9 kN	15.6 kN
305-2ZNR	NTN	22.9 kN	15.6 kN
305-Z	NTN	22.9 kN	15.6 kN
6305.2ZR	FAG (Schaeffler)	22.7 kN	11.5 kN
305KDD	Timken	22.5 kN	11.4 kN
6305-2Z	NTN	22.5 kN	11.4 kN
W 6305-2Z	NTN	17.8 kN	11.2 kN
6305-2Z/VA201	NTN	—	11.6 kN
6305-2Z/VA208	NTN	—	11.6 kN
6305-2Z/VA228	NTN	—	11.6 kN

Check before substituting — 101 designations · top 12 shown

Part number	Manufacturer	C	Differs from this part
21305 CC	NTN	49.1 kN	Type: Spherical — this part: Deep groove ball Seal: Open — this part: 2Z shield
21305 CC/C3	NTN	49.1 kN	Type: Spherical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN
N 305 ECP	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NJ 305 ECJ	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NJ 305 ECML	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NJ 305 ECP	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NJ 305 ECP/C3	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN
NJ 305 ECP/C4	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C4 — this part: CN
NU 305 ECJ	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NU 305 ECML	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NU 305 ECP	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield
NU 305 ECP/C3	NTN	46.5 kN	Type: Cylindrical — this part: Deep groove ball Seal: Open — this part: 2Z shield Clearance: C3 — this part: CN

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.

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