NTN 71911 ACDGA/HCP4A

Angular · Open

The seat — 55 MM × 80 MM × 13 MM

Bore

55 MM

Outside dia

80 MM

Width

13 MM

Type

Angular

Seal

Open

Clearance

CN (Normal)

Precision

ABEC-1 (P0)

Dynamic C

18.2 kN

Static C0

13.7 kN

57 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 — 43 designations · top 20 shown

Part number	Manufacturer	C	C0
71911 CD/HCP4A	NTN	19.5 kN	14.6 kN
71911 CD/P4A	NTN	19.5 kN	14.6 kN
71911 CDGA/HCP4A	NTN	19.5 kN	14.6 kN
71911 CDGA/P4A	NTN	19.5 kN	14.6 kN
71911 CDGB/P4A	NTN	19.5 kN	14.6 kN
S71911 CDGA/HCP4A	NTN	19.5 kN	14.6 kN
S71911 CDGA/P4A	NTN	19.5 kN	14.6 kN
S71911 CDGB/P4A	NTN	19.5 kN	14.6 kN
S71911 CDGC/P4A	NTN	19.5 kN	14.6 kN
71911 ACD/P4A	NTN	18.2 kN	13.7 kN
71911 ACDGA/HCP4AL	NTN	18.2 kN	13.7 kN
71911 ACDGA/P4A	NTN	18.2 kN	13.7 kN
71911 ACDGB/P4A	NTN	18.2 kN	13.7 kN
71911 ACDGC/P4A	NTN	18.2 kN	13.7 kN
S71911 ACD/HCP4A	NTN	18.2 kN	13.7 kN
S71911 ACDGA/HCP4A	NTN	18.2 kN	13.7 kN
S71911 ACDGA/P4A	NTN	18.2 kN	13.7 kN
S71911 ACDGB/P4A	NTN	18.2 kN	13.7 kN
S71911 ACDGC/P4A	NTN	18.2 kN	13.7 kN
71911 CE/HCP4A	NTN	15.6 kN	10.6 kN

Check before substituting — 14 designations · top 12 shown

Part number	Manufacturer	C	Differs from this part
61911	NTN	16.5 kN	Type: Deep groove ball — this part: Angular
61911-2RS1	NTN	16.5 kN	Type: Deep groove ball — this part: Angular Seal: 2RS contact seal — this part: Open
6911.2RSR	FAG (Schaeffler)	16.5 kN	Type: Deep groove ball — this part: Angular Seal: 2RS contact seal — this part: Open
6911.2ZR	FAG (Schaeffler)	16.5 kN	Type: Deep groove ball — this part: Angular Seal: 2Z shield — this part: Open
6911.C3	FAG (Schaeffler)	16.5 kN	Type: Deep groove ball — this part: Angular Clearance: C3 — this part: CN (Normal)
6911-2RS1	NTN	16.3 kN	Type: Deep groove ball — this part: Angular Seal: 2RS contact seal — this part: Open
6911-2Z	NTN	16.3 kN	Type: Deep groove ball — this part: Angular Seal: 2Z shield — this part: Open
6911/C3	NTN	16.3 kN	Type: Deep groove ball — this part: Angular Clearance: C3 — this part: CN (Normal)
69112RS	Timken	16.1 kN	Type: Deep groove ball — this part: Angular Seal: 2RS contact seal — this part: Open
6911DDU	NSK	16.0 kN	Type: Deep groove ball — this part: Angular Seal: 2RS contact seal — this part: Open
6911	NTN	15.8 kN	Type: Deep groove ball — this part: Angular
6911C3	NTN	15.8 kN	Type: Deep groove ball — this part: Angular Clearance: C3 — this part: CN (Normal)

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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