IKO (Nippon Thompson) NA4907U

Needle · Open

The seat — 35 MM × 55 MM × 20 MM

Bore

35 MM

Outside dia

55 MM

Width

20 MM

Type

Needle

Seal

Open

Clearance

CN (Normal)

Precision

Dynamic C

—

Static C0

—

54 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 — 5 designations

Part number	Manufacturer	C	C0
NA 4907	NTN	36.5 kN	54.0 kN
GTRI355520	IKO (Nippon Thompson)	—	—
NAF355520	IKO (Nippon Thompson)	—	—
NAG4907	IKO (Nippon Thompson)	—	—
NAU4907	IKO (Nippon Thompson)	—	—

Check before substituting — 49 designations · top 12 shown

Part number	Manufacturer	C	Differs from this part
71907 CD/HCP4ADGA	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/HCP4ADT	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADBA	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADBB	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADBC	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADFC	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADGA	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADGB	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADGC	NTN	15.9 kN	Type: Angular — this part: Needle
71907 CD/P4ADT	NTN	15.9 kN	Type: Angular — this part: Needle
S71907 CD/P4ADBB	NTN	15.9 kN	Type: Angular — this part: Needle
71907 ACD/HCP4ADGB	NTN	14.8 kN	Type: Angular — this part: Needle

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/NA4907U/SUBSTITUTE