NSK RNA4822 needle roller bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Needle roller bearing
- Series
- RNA48
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Description
NSK RNA4822 belongs to needle roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for RNA4822 and any equivalents.
When radial space is limited, an NSK RNA series needle roller bearing can carry the load without an inner ring. The needles run directly on a hardened and ground shaft, so the assembly stays compact and light. This design is common in transmissions, pumps, compressors and continuous production equipment, where dimensional precision and reliable operation matter.
Reading the part number helps you select the right bearing. The letters RNA mean a needle roller bearing with no inner ring. The number that follows indicates the needle circle diameter and the width. In this series, numeric suffixes define different combinations of outer diameter and width. With the full part number, you can match load capacity and fit to your application.
These bearings appear in food processing, metallurgy, plastics and mining equipment, including conveyor belts, mixers, positive displacement pumps and machine tools. Their low radial profile supports compact designs and can simplify assembly.
Selection depends on the shaft, which acts as the raceway. Check its hardness and roughness, and choose sealing to suit the environment. Lubrication must match operating speed and temperature. Proper alignment between shaft and housing prevents parasitic axial loads, and a controlled interference fit during assembly helps extend service life.
If you are replacing a bearing from another brand, we can help you find the equivalent. Send the original part number or the main dimensions. Interchangeability relies on standardized dimensions and load capacity, so verify the needle circle diameter, width and cage type before confirming the replacement.
To request a quote for the NSK needle roller bearing you need, send the full part number or the shaft and housing dimensions on WhatsApp or by email. We reply promptly with the exact reference and a suitable alternative for your equipment.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does the RNA series mean in a needle roller bearing?
- RNA identifies needle roller bearings without an inner ring. The needles roll directly on the shaft, which must be hardened and ground. They suit applications needing a very low radial profile and high load capacity in a small space.
- How do I choose the right RNA bearing for my equipment?
- Know the shaft diameter, housing diameter and seat width. Load, speed and environmental conditions also matter. With that data, we can provide the exact part number and recommend sealing or lubrication.
- Can I replace a bearing from another brand with an NSK one?
- Yes, if standardized dimensions and load capacity match. Interchangeability is based on the needle circle diameter, width and cage type. Send us the original part number or dimensions, and we will quote the NSK equivalent.