NSK RNA4907 Needle Roller Bearing with Inner Ring – 35 × 55 × 20mm | Heavy Duty Industrial Bearing
NSK RNA4907 Needle Roller Bearing with Inner Ring – 35 × 55 × 20mm | Heavy Duty Industrial Bearing
Product Description
The NSK RNA4907 Needle Roller Bearing with Inner Ring is a precision-engineered industrial bearing designed to provide excellent radial load capacity, smooth rotation and reliable performance in demanding mechanical applications.
Featuring high-quality needle rollers, a durable outer ring and a separate removable inner ring, this bearing offers excellent load-carrying capability within a compact, space-saving design.
The included inner ring provides a hardened and precision-ground running surface for the needle rollers, making the assembly suitable for applications where the shaft cannot be used directly as a bearing raceway.
Ideal for industrial machinery, gearboxes, conveyor systems, CNC equipment, agricultural machinery, automation systems and mechanical transmission applications.
Key Features
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NSK Bearing: Precision-engineered bearing designed for industrial applications.
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Inner Ring Included: Supplied with a removable inner ring for convenient installation and maintenance.
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High Radial Load Capacity: Designed to support heavy radial loads in demanding applications.
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Compact Design: Provides high load capacity within limited installation space.
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Precision Needle Rollers: Promote smooth rotation and efficient load distribution.
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Durable Bearing Steel: Designed for strength, wear resistance and long service life.
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Removable Inner Ring: Provides a suitable hardened running surface for the needle rollers.
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Industrial Applications: Suitable for mechanical drives, rotating shafts and industrial machinery.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | NSK |
| Bearing Model | RNA4907 with Inner Ring |
| Complete Assembly Equivalent | NA4907 |
| Bearing Type | Needle Roller Bearing |
| Inner Diameter (with ring) | 35 mm |
| Outer Diameter | 55 mm |
| Width | 20 mm |
| Roller-Inscribed Diameter (without ring) | 42 mm |
| Inner Ring | Included – Removable |
| Roller Arrangement | Single Row |
| Material | Bearing Steel |
| Seal Type | Open / Unsealed |
| Lubrication | Grease or Oil |
| Primary Load Direction | Radial |
Common Applications
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Industrial Machinery: Manufacturing equipment, production machinery and rotating mechanical assemblies.
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Gearboxes and Transmissions: Supports rotating shafts and gear assemblies under radial loads.
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Conveyor Systems: Suitable for material handling equipment and mechanical drive systems.
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CNC Machinery: Used in compatible machine mechanisms and rotating equipment.
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Agricultural Equipment: Suitable for various agricultural and mechanical applications.
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Automotive Components: Used in compatible transmission and mechanical assemblies.
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Industrial Automation: Suitable for automated manufacturing equipment and mechanical drive mechanisms.
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Maintenance and Repairs: Replacement bearing for compatible industrial machinery.
Benefits of Needle Roller Bearings
Needle roller bearings use long, slender cylindrical rollers to provide a large contact area between the rollers and raceways.
This design offers several advantages:
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High radial load capacity
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Compact and space-saving construction
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Smooth and efficient rotation
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Reduced friction with proper lubrication
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Durable performance under suitable operating conditions
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Suitable for a wide range of industrial machinery
Installation and Maintenance Recommendations
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Confirm shaft diameter, housing dimensions and bearing compatibility before installation.
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Ensure mounting surfaces are clean and free from damage.
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Use suitable bearing installation tools and correct fitting procedures.
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Apply appropriate grease or oil according to the operating conditions.
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Avoid excessive misalignment, contamination and improper loading.
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Inspect the bearing periodically for wear, vibration, overheating and unusual noise.
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Follow NSK's recommended load, speed and lubrication requirements.
Important Product Information
RNA4907 – Without Inner Ring
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Roller-Inscribed Diameter: 42 mm
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Outer Diameter: 55 mm
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Width: 20 mm
NA4907 – With Inner Ring
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Inner Diameter: 35 mm
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Outer Diameter: 55 mm
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Width: 20 mm
This product is described as an NSK RNA4907 supplied with a compatible removable inner ring, corresponding dimensionally to an NA4907 bearing assembly.
Please verify the bearing marking, inner-ring compatibility and supplied components before purchasing.
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 industrial bearings, their working principles, applications and how to select the correct 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 causes of failure
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 educational videos covering mechanical engineering, industrial automation, bearings, electric motors, sensors, conveyors, robotics and industrial machinery.
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 manufacturing,