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NSK NSK 7938A5SULP4 Angular Contact Ball Bearing

NSK

NSK 7938A5SULP4 Angular Contact Ball Bearing Schrägkugellager 190 × 260 × 33 mm

Angular Contact Ball Bearing

Angebotsanfrage

Voraussichtliche Lieferung: 16. Juni 2026 (Lagerbestand Korea)

Auf LagerVoraussichtliche Lieferung: 16. Juni 2026 (Lagerbestand Korea)

Angegebene Preise gelten EX-WORKS (Incoterms 2020) Seoul, Korea. Fracht, Zölle und Versicherung trägt der Käufer.

Category: Schrägkugellager
Bore: 190 mm mm
Outer Ø: Flat
Width: 33 mm mm
Material: High Carbon Steel

Overview

NSK 7938A5SULP4 Angular Contact Ball Bearing supports combined radial and one-direction axial load through a defined contact angle. It is a high-speed, high-precision choice for pumps, compressors, machine tools, and spindle-related positions where axial rigidity and rotational accuracy matter.

The inner and outer ring raceways are offset to create a contact angle. Single-row, double-row, or matched arrangements can be used to meet axial load direction, preload, and rigidity requirements.

Key features

Supports combined radial and one-direction axial load
High-speed and high-accuracy operation
Preload and rigidity adjustable through matched mounting
Suitable for precision rotating assemblies

Typical applications

Machine tool spindles and support shafts
Pumps and compressors
High-speed motors
Precision gearboxes and robot drives

Selection guidance

Select by contact angle, arrangement, preload, precision class, axial load direction, and operating speed.

Symbol	Wert	Beschreibung
d	190 mm	Bore diameter (inner)
D	260 mm	Outside diameter (outer)
B	33 mm	Breite
α	25°	Contact angle (A5 designation)
Cr	139 kN	Basic dynamic load rating
C0r	182 kN	Basic static load rating
n_grease	4,500 rpm	Limit speed with grease lubrication
n_oil	6,700 rpm	Limit speed with oil lubrication
≈m	5.1 kg	Weight (approx.)

Element	Code	Beschreibung
Type	Universal Combination Angular Contact Bearing	Single bearing, universally matchable (DB/DF/DT/QBC)
Model No.	7938A5SULP4	Standard NSK Japan part number (no TR/TYN suffix → pressed steel cage)
Abdichtung	Open type	No shield, no seal
Vorspannung	L	Light preload — high-speed precision spindle applications
Käfig	Pressed steel	Standard NSK Japan steel cage (TR = phenolic / TYN = polyamide are RHP-UK variants)
Precision	P4	ISO Class 4 ≈ JIS 4 ≈ ABEC-7

Super-precision angular contact ball bearing
High-speed machine tool spindle application
Universal single matching — combine in DB / DF / DT / QBC sets
Light preload (L) — optimized for rotational accuracy at high speed
Pressed steel cage — standard NSK Japan configuration
Open type — re-lubricable, no integral seal

Code	Beschreibung
NSK Ltd.	Original equipment manufacturer
Japan	NSK Fujisawa precision plant
Direct Import from Japan
4	≈ ISO Class 4 / DIN P4 / ABEC-7
Angular Contact Ball Bearing	Single row, defined contact angle
Flat	No snap ring, no flange
Radial	Plus axial in one direction (per angular contact geometry)
High Carbon Steel	Rings/raceways — SUJ2 high-carbon chromium bearing steel
High Carbon Chromium Bearing Steel	Steel balls (SUJ2)
8417133	External catalog reference

Datenblatt-PDF herunterladen

Also searched as

The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:

NSK7938A5SULP4
NSK 7938A5SULP4

Overview

The inner and outer ring raceways are offset to create a contact angle. Single-row, double-row, or matched arrangements can be used to meet axial load direction, preload, and rigidity requirements.

Symbol

Wert

Beschreibung

190 mm

Bore diameter (inner)

260 mm

Outside diameter (outer)

33 mm

Breite

25°

Contact angle (A5 designation)

139 kN

Basic dynamic load rating

C0r

182 kN

Basic static load rating

n_grease

4,500 rpm

Limit speed with grease lubrication

n_oil

6,700 rpm

Limit speed with oil lubrication

≈m

5.1 kg

Weight (approx.)

Element

Code

Beschreibung

Type

Universal Combination Angular Contact Bearing

Single bearing, universally matchable (DB/DF/DT/QBC)

Model No.

7938A5SULP4

Standard NSK Japan part number (no TR/TYN suffix → pressed steel cage)

Abdichtung

Open type

No shield, no seal

Vorspannung

Light preload — high-speed precision spindle applications

Käfig

Pressed steel

Standard NSK Japan steel cage (TR = phenolic / TYN = polyamide are RHP-UK variants)

Precision

ISO Class 4 ≈ JIS 4 ≈ ABEC-7

Code

Beschreibung

NSK Ltd.

Original equipment manufacturer

Japan

NSK Fujisawa precision plant

Direct Import from Japan

≈ ISO Class 4 / DIN P4 / ABEC-7

Angular Contact Ball Bearing

Single row, defined contact angle

Flat

No snap ring, no flange

Radial

Plus axial in one direction (per angular contact geometry)

High Carbon Steel

Rings/raceways — SUJ2 high-carbon chromium bearing steel

High Carbon Chromium Bearing Steel

Steel balls (SUJ2)

8417133

External catalog reference

NSK 7938A5SULP4 Angular Contact Ball Bearing Schrägkugellager 190 × 260 × 33 mm