SKF NKI38/20 Needle Roller Bearing 38 × 53 × 20 mm

Needle Roller Bearing

RFQ

Estimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)

In stockEstimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)

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

Category: Needle Roller Bearing
Dimensions: 38x53x20mm

Overview

Needle roller bearing

Needle roller bearings use needle rollers with a small diameter relative to their length, accommodating very high radial loads within a small cross-section (low height). They suit applications requiring high load capacity in limited radial space, such as gearboxes, hydraulic pumps and automotive transmissions.

Key features

High radial load in a small section
Compact radial design
High rigidity and accuracy
Caged or full-complement options

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	31.5 kN	Basic dynamic load rating
C0	55 kN	Basic static load rating
reference_speed_rpm	9 500 r/min	Reference speed
limiting_speed_rpm	11 000 r/min	Limiting speed
performance_class	SKF Explorer	SKF performance class

Symbol	Value	Description
d	38 mm	Bore diameter
D	53 mm	Outside diameter
B	20 mm	Width

Symbol	Value	Description
da	min. 40 mm	da
Da	max. 51 mm	Da
ra	max. 0.3 mm	ra

Code	Description
베어링 부품	Complete bearing
열 개수	1
외륜 유형	Machined (solid)
정렬 기능	None
케이지	Sheet metal
플랜지 개수, 외부 링	2
경방향 내부틈새	CN
공차 클래스	Normal
소재, 베어링	Bearing steel
코팅	None
씰링	None
윤활유	None
재윤활 기능	Included
제품 순 중량	0.136 kg
eClass 코드	23-05-09-03
UNSPSC 코드	31171512

datasheet pdf download

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