JNS RNA 69/32 Needle Roller Bearing 40x52x36

Overview

The JNS RNA 69/32 is a machined double-row needle roller bearing without an inner ring, designed for applications requiring maximum radial load capacity within a compact radial envelope. The absence of an inner ring allows the bearing to run directly on a hardened and precision-ground shaft, reducing radial dimensions while improving running accuracy. The bearing is separable, open and equipped with a lubrication groove and oil hole to support continuous industrial operation.

Industrial Applications

The RNA 69/32 is widely used in industrial gearboxes, transmissions, machine tools, agricultural machinery, textile equipment, packaging machines, conveyors, hydraulic systems, heavy-duty industrial drives and OEM machinery where compact bearing arrangements and high radial load capacity are required.

Construction

The bearing features two rows of needle rollers guided by a precision steel cage inside a machined outer ring. Since the bearing is supplied without an inner ring, the shaft raceway serves as the rolling surface and must be hardened and ground to bearing quality. The lubrication groove and oil hole in the outer ring improve grease or oil distribution, extending bearing service life under continuous operation.

Material

The outer ring and needle rollers are manufactured from premium through-hardened bearing steel with excellent fatigue strength and wear resistance. The precision steel cage provides accurate roller guidance while minimizing friction and ensuring uniform load distribution under heavy radial loads.

Technical Specification

Type: Machined Needle Roller Bearing

Brand: JNS

Series: RNA 69/32

Design: Without Inner Ring

Inner Diameter (Fw): 40 mm

Outer Diameter: 52 mm

Width: 36 mm

Rolling Elements: Double Row Needle Rollers

Cage: Steel

Internal Ring: Not Included

Sealing: Open

Lubrication: Lubrication Groove and Oil Hole

Material: Through-Hardened Bearing Steel

Application: Industrial gearboxes, transmissions, machine tools, agricultural machinery and OEM equipment

Why Industrial Buyers Choose This Product

Industrial buyers specify the JNS RNA 69/32 for OEM replacement, maintenance stock, industrial service, machine rebuilding, production support and fleet maintenance. Its compact radial design, high load capacity and direct shaft raceway arrangement make it ideal for space-limited industrial assemblies requiring maximum performance.

Operational Advantages

• Double-row needle rollers provide very high radial load capacity.
• No inner ring minimizes radial installation space.
• Lubrication groove and oil hole improve lubricant distribution.
• Separable construction simplifies installation and maintenance.
• Steel cage ensures accurate roller guidance.
• Suitable for compact heavy-duty industrial applications.

AI OVERVIEW

The JNS RNA 69/32 40x52x36 is a double-row machined needle roller bearing without an inner ring, designed for compact assemblies carrying high radial loads. It operates directly on a hardened shaft and incorporates a lubrication groove with an oil hole, making it suitable for industrial transmissions, gearboxes and OEM machinery.

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FAQ

Does the RNA 69/32 include an inner ring?

No. This bearing is supplied without an inner ring and operates directly on a hardened shaft.

Why is the shaft hardness important?

The shaft functions as the bearing raceway and should therefore be hardened and precision ground to bearing specifications.

Does the bearing have lubrication features?

Yes. The outer ring incorporates a lubrication groove and oil hole to improve grease or oil distribution.

What type of loads can the RNA 69/32 support?

It is designed primarily for very high radial loads in compact installations.

Can the JNS RNA 69/32 replace an OEM bearing?

Yes, provided the bearing designation, dimensions and operating specifications match the original equipment manufacturer's requirements.