SKF NK40/30 Needle Roller Bearing

Single row needle roller bearing with machined rings, with flanges, without inner ring

Needle Roller Bearing

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EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Needle Roller Bearing

Overview

Single row needle roller bearing with machined rings, with flanges, without inner ring

Single row needle roller bearings without an inner ring consist of an outer ring with a needle roller and cage assembly. They are an excellent choice for compact bearing arrangements in applications where hardened and ground raceways can be provided on the shaft. The outer ring includes two integral flanges to guide the bearing axially and an annular groove with one or more lubrication holes to facilitate relubrication.

Key features

High radial load carrying capacity
High stiffness
Low cross-sectional height
Accommodate axial displacement in both directions

Typical applications

Automotive transmissions
Industrial gearboxes
Compressors and pumps
Links, pivots, and rocker arms

Selection guidance

Check mounting envelope, inner ring requirement, shaft surface hardness, lubrication, load, and speed range.

Symbol	Value	Description
C	44 kN	Basic dynamic load rating
C0	83 kN	Basic static load rating
reference_speed_rpm	10 000 r/min	Reference speed
limiting_speed_rpm	11 000 r/min	Limiting speed
performance_class	SKF Explorer	SKF performance class

Symbol	Value	Description
Fw	40 mm	Needle roller complement bore diameter
D	50 mm	Outside diameter
B	30 mm	Width

Symbol	Value	Description
Da	max. 48 mm	Da
ra	max. 0.3 mm	ra

High radial load capacity
High rigidity
Low cross-section height
Accommodates axial displacement in both directions

Code	Description
베어링 부품	Inner ring bearing
열 개수	1
외륜 유형	Machined (solid)
정렬 기능	None
케이지	Sheet steel
플랜지 개수, 외부 링	2
공차 클래스	Normal
소재, 베어링	Bearing steel
코팅	None
씰링	None
윤활유	None
재윤활 기능	Included
제품 순 중량	0.125 kg
eClass 코드	23-05-09-03
UNSPSC 코드	31171512

datasheet pdf download

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