NTN NA643/632D-Online Bearing Service - Stock, Size, Weight• Bearingmodel.com

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Bearing Parameters

Availability	IN STOCK
Brand	NTN
Model	NA643/632D	Tapered Roller Double Row
Also known as
Inner (d) MM	-
Outer (D) MM	-
Width (B) MM	-
Weight (kg)	5.85
Technical details (2RS)	D=Double Cone Or Double Cup.
Inner (d) Inch	2.750
Outer (D) Inch	5.375
Width (B) Inch	3.000
Description from Medias
Manufacturer Part Number (MPN)	NA643/632D
Bore
Seal
Cage Type
External Modification
Radial Internal Play
Precision
Heat Stabilization
Special Treatment

REVIEWS

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Name : Kenji Saito
From : Japan

Time : 2025/11/24 Review:★★★★★

We use a lot of NMB micro bearings. Supplier handled small qty orders with same priority as large ones, no minimum nonsense. That flexibility helped me win contracts with smaller clients.

---- Kenji Saito

Name : Anna Kowalczyk
From : Poland

Time : 2025/11/21 Review:★★★★★

Logistics notes were detailed which speeds up customs clearance — big plus.

---- Anna Kowalczyk

Name : David Harris
From : UK

Time : 2025/11/19 Review:★★★★★

Sold several boxes of mixed-brand wheel bearings KOYO to auto garages. Price margin is fair and the tech sheet helped our mechanics pick right cross-references.

---- David Harris

Name : Lisa Montgomery
From : Puerto Rico

Time : 2025/11/15 Review:★★★★★

As an industrial parts wholesaler, I need reliable lead-times. Supplier stocked TIMKEN and FAG lines and even helped with emergency air shipments for one key client — saved their production. After that, we placed quarterly blanket orders. Service impressed my purchasing team.

---- Lisa Montgomery

Name : Jason Turner
From : New Zealand

Time : 2025/11/13 Review:★★★★★

We handle exports to small Pacific islands; shipping is tricky. This company packed NSK bearings very securely and provided all export docs. No damage, no customs headache.

---- Jason Turner

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NTN NA643/632D

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