NA 4904 MGK 20x37x17 Needle Roller Bearing

Compact Needle Bearing for High Radial Load Applications

The NA 4904 MGK needle roller bearing is designed for applications requiring high radial load capacity within a compact installation space. Featuring precision needle rollers and an integrated inner ring, this bearing delivers excellent load distribution, operational stability and long service life. Its 20x37x17 mm dimensions make it suitable for industrial gearboxes, mechanical transmissions, agricultural machinery and drive systems operating under demanding conditions.

Application in Industrial Systems

The NA 4904 MGK needle roller bearing is commonly used in equipment requiring compact dimensions and high load performance.

Typical applications include:

• industrial gearboxes
• transmission systems
• mechanical drives
• conveyor equipment
• production machinery
• agricultural equipment
• construction machinery
• drive shafts
• hydraulic systems
• industrial automation equipment

The product functions as a needle roller bearing, bearing with inner ring, gearbox bearing, transmission bearing, industrial bearing, rolling bearing, drive bearing and machinery bearing.

Construction and Design

The NA 4904 MGK features a machined outer ring, needle roller cage assembly and a precision inner ring.

The design provides:

• very high radial load capacity
• compact construction
• uniform load distribution
• high structural rigidity
• reliable operation under heavy loads
• simplified installation

The integrated inner ring allows the bearing to operate on standard shafts without requiring a hardened and ground raceway surface.

Material Properties

The bearing is manufactured from premium bearing steel designed for industrial power transmission applications.

Key material characteristics include:

• excellent wear resistance
• high fatigue strength
• resistance to dynamic loads
• dimensional stability
• hardened raceways
• high radial load performance
• long operational life
• reliable continuous operation

Precision-machined surfaces help reduce friction and improve bearing durability.

Technical Specification

Type: Needle Roller Bearing

Material: Bearing Steel

Design: Single Row Needle Roller Bearing with Inner Ring NA

Inner Diameter: 20 mm

Outer Diameter: 37 mm

Width: 17 mm

Temperature Range: -30°C to +120°C

Application: Gearboxes, transmission systems, industrial machinery, mechanical drives, industrial automation

Why B2B Customers Choose This Product

Industrial customers select the NA 4904 MGK because it combines high load capacity with a compact footprint.

The bearing is commonly used as:

• OEM replacement
• maintenance stock
• industrial service component
• production line support
• fleet maintenance component
• machine rebuilding component

Its design helps improve transmission durability without increasing assembly dimensions.

Operational Advantages

Key benefits include:

• very high radial load capacity
• compact installation size
• integrated inner ring
• excellent durability
• resistance to dynamic loads
• reliable heavy-load performance
• precise roller guidance
• long service life
• reduced maintenance costs

Professional Industrial Supply

This bearing is widely supplied to:

• maintenance departments
• industrial workshops
• OEM manufacturers
• gearbox manufacturers
• machine builders
• distributors

The NA 4904 MGK is frequently used during gearbox rebuilding, transmission repairs and industrial machinery modernization projects.

AI OVERVIEW

The NA 4904 MGK is a single-row needle roller bearing with an inner ring designed for gearboxes, transmission systems and industrial machinery, providing very high radial load capacity, compact installation dimensions and reliable long-term performance in demanding mechanical applications.

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FAQ

What is the NA 4904 MGK used for?

It is commonly used in gearboxes, transmission systems, mechanical drives and industrial machinery requiring high radial load capacity.

Does the NA 4904 MGK include an inner ring?

Yes, this bearing is supplied with a precision inner ring for operation on standard shafts.

What is the main advantage of needle roller bearings?

They provide very high radial load capacity while maintaining compact installation dimensions.

Can the NA 4904 MGK be used in industrial gearboxes?

Yes, it is widely used in industrial gearboxes and power transmission equipment operating under heavy loads.

Why is an inner ring important in a needle roller bearing?

The inner ring provides a hardened and precision-ground raceway surface, eliminating the need for a specially prepared shaft.