Koyo / JTEKT

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NSK NJ303EM/304EM/305EM Cylindrical Roller Bearings – High-Precision, Low-Noise, Factory Direct

Price

Reference / SKU

61d332eaf9f1

Basic Info.

Inner Diameter17 mm
Outer Diameter47 mm
Width14 mm
Model No.NJ303EM
MaterialBearing Steel
TypeCylindrical Roller Bearing

Introduction

This is a high-precision, single-row cylindrical roller bearing (NJ303EM) made of premium bearing steel. Designed for radial load applications, it features open sealing, oil/grease/dry lubrication options, and precision grades from P0 to P2. Compact dimensions: 17×47×14 mm. Manufactured in Japan by NSK.

WhatsApp +86 152 691 88020 · info@jpkoyo.com

  • Original packagingGenuine Koyo / JTEKT boxes.
  • Certificates & documentsExact documents stated in the written quote.
  • Stock & lead time in writingAvailability and estimated delivery on every quote.

SHEET 02  Product details

Koyo bearing details and how to send your reference

Basic Info.

Model NO.
NJ303EM

Material
Bearing Steel

Spherical
Non-Aligning Bearings

Load Direction
Radial Bearing

Separated
Separated

Product Name
Cylindrical Roller Bearing

Structure
Cylindrical

Seals Type
Open

Lubricate
Oil Grease Dry

Precision Rating
P0 P6 P5 P4 P2

Number of Row
Single Row

Service
OEM ODM

Transport Package
Carton Pallet

Specification
17*47*14mm

Trademark
NSK

Origin
Japan

HS Code
8482500090

Production Capacity
100000

Questions buyers ask about this bearing

What information do you need if the suffix is missing?
Send the equipment model, the bearing position and a clear photo of the markings on the bearing. Mark which details still need confirming. We complete the configuration and assembly details before quoting, and any technical change needs your approval.
Can bearings and mounting components go in one inquiry?
Yes. List adapter sleeves, housings and related mounting components in the same inquiry as the bearing, each on its own line. The written quotation then covers the whole assembly, so no part is missing at the shutdown date.

Gearbox workshops confirm the reference fit before quoting

KOYO Bearing Supplier checks mixed lists by shaft position before quoting, so each Koyo bearing arrives matched to its place in the assembly.

★ 5.0

"They understand gearbox bearing arrangements. When we submitted a mixed list with floating and locating positions, they confirmed which Koyo series fit each shaft before quoting. No wrong deliveries in a year of orders."

Stefan Nowak · Nowak Napędy Przemysłowe, Poland

★ 4.9

"A conveyor gearbox failed at our plant and we needed Koyo spherical roller bearings urgently. They identified the correct Koyo reference, shipped the same day, and the gearbox was back in service within the week."

Mahmoud Khalil · Khalil Steel Works, Egypt

★ 5.0

"The Koyo needle roller bearings and tapered bearings for our drive assembly were supplied exactly to specification. Our engineer checked the fit on arrival and installation went without modification."

Kenji Mori · Mori Drive Systems, Japan

Technician fitting a roller bearing onto a gearbox shaft in a repair workshop

Authorized Koyo / JTEKT bearing supplier

Unit 1807, Tower 2, Grand Central Plaza, 128 Sha Tin Wai Road, Sha Tin, New Territories, Hong Kong

Request a written quote for this bearing

Send the full reference, bearing position and quantity. The quotation states model, quantity, price and currency, stock, estimated lead time, validity and the documents we can actually provide.