RNA4907 Needle Roller Bearing with Inner Ring – 35 × 55 × 20mm | Heavy Duty Industrial Bearing
RNA4907 Needle Roller Bearing with Inner Ring – 35 × 55 × 20mm | Heavy Duty Industrial Bearing
Product Description
The RNA4907 Needle Roller Bearing with Inner Ring is a high-quality, precision-engineered bearing designed to provide excellent radial load capacity, smooth rotation and reliable performance in demanding industrial applications.
Manufactured from durable bearing steel, this heavy-duty needle roller bearing features precision cylindrical needle rollers, a robust outer ring and a separate removable inner ring. Its compact construction makes it ideal for machinery requiring high load capacity within limited installation space.
The included inner ring provides a hardened and precision-ground running surface for the needle rollers, making the bearing suitable for applications where the shaft cannot be used directly as a bearing raceway.
Ideal for industrial machinery, automation systems, gearboxes, conveyors, agricultural equipment and mechanical transmission applications.
Key Features
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Inner Ring Included: Supplied with a separate removable inner ring for convenient installation and replacement.
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High Radial Load Capacity: Designed to withstand heavy radial loads in demanding industrial environments.
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Compact Design: Provides excellent load-carrying capability while requiring minimal installation space.
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Precision Needle Rollers: Deliver smooth rotation, efficient load distribution and reduced friction.
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Durable Bearing Steel: Manufactured for strength, wear resistance and long service life.
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Removable Inner Ring: Simplifies assembly and maintenance while providing a precision running surface.
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Reliable Performance: Suitable for continuous operation within manufacturer-specified load and speed limits.
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Versatile Applications: Ideal for industrial equipment, mechanical drives and rotating shaft assemblies.
Technical Specifications
| Specification | Details |
|---|---|
| Bearing Model | RNA4907 with Inner Ring |
| Complete Assembly Equivalent | NA4907 |
| Bearing Type | Needle Roller Bearing |
| Inner Diameter (ID) | 35 mm |
| Outer Diameter (OD) | 55 mm |
| Bearing Width | 20 mm |
| Roller-Inscribed Diameter (without ring) | 42 mm |
| Inner Ring | Included – Removable |
| Roller Arrangement | Single Row |
| Material | High-Carbon Chrome Bearing Steel |
| Seal Type | Open / Unsealed |
| Lubrication | Grease or Oil |
| Primary Load Direction | Radial |
Common Applications
The RNA4907 Needle Roller Bearing with Inner Ring is suitable for a wide range of industrial and mechanical applications, including:
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Industrial Machinery: Manufacturing equipment, production machinery and mechanical assemblies.
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Gearboxes and Transmissions: Supports rotating shafts and gear assemblies under radial loads.
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Conveyor Systems: Used in material handling equipment and mechanical drive systems.
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CNC Machinery: Suitable for selected rotating assemblies and mechanical mechanisms.
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Agricultural Equipment: Used in machinery requiring durable and compact bearing arrangements.
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Automotive Applications: Suitable for compatible mechanical transmission assemblies.
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Industrial Automation: Used in automated machinery and mechanical drive mechanisms.
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Maintenance and Repairs: Replacement bearing for compatible industrial equipment.
Benefits of Needle Roller Bearings
Needle roller bearings are widely used in industrial equipment because they provide high radial load capacity relative to their compact dimensions.
Their long, slender cylindrical rollers create a large contact area between the rolling elements and raceways, enabling efficient load distribution.
Compared with many conventional ball bearings, needle roller bearings can offer greater radial load capacity within a similar radial installation space.
Installation and Maintenance Recommendations
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Verify shaft diameter, housing dimensions and bearing compatibility before installation.
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Ensure the shaft and housing surfaces are clean and free from damage.
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Install the bearing using appropriate tools and correct fitting procedures.
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Apply suitable grease or oil according to the operating conditions.
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Avoid excessive misalignment and improper loading.
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Inspect bearings periodically for wear, contamination and abnormal noise.
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Follow the manufacturer's recommended operating limits and maintenance requirements.
Important Product Information
RNA4907: Standard needle roller bearing without an inner ring, featuring a 42mm roller-inscribed diameter, 55mm outer diameter and 20mm width.
NA4907: Complete needle roller bearing with an inner ring, featuring a 35mm shaft bore, 55mm outer diameter and 20mm width.
This product is described as an RNA4907 supplied with a compatible inner ring, corresponding dimensionally to an NA4907 assembly.
Please verify the supplied components and specifications before ordering.
Learn More – Watch Our Bearing Educational Video
Want to learn more about needle roller bearings, how they work and where they are used?
Watch our educational video from RM Engineering & Automation, where we explain different types of bearings, their working principles, applications and important considerations when selecting the right bearing for your machinery.
In this video, you can learn about:
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Different types of industrial bearings
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How needle roller bearings work
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Ball bearings versus roller bearings
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Common industrial bearing applications
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How bearings reduce friction and support rotating shafts
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Important factors when selecting bearings
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Bearing maintenance and common failure causes
Watch Our Bearing Educational Video on YouTube:
https://www.youtube.com/watch?v=G-B4zJTEwAk&t=5s
Subscribe to RM Engineering & Automation on YouTube for more educational videos covering mechanical engineering, industrial automation, bearings, motors, sensors, conveyors, robotics and machinery components.
Contact RM Engineering & Automation
For more information about our needle roller bearings, industrial components, mechanical parts or automation solutions, please contact us.
RM Engineering & Automation
Website: https://www.rmengineeringautomation.com.au/
Email: info@rmenga.com.au
We supply a wide range of industrial bearings, mechanical components and automation products for engineering, maintenance, manufacturing and industrial applications.