NSK IR-475632 inner ring
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Inner ring
- Series
- IR
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Description
NSK IR-475632 belongs to inner ring, 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 IR-475632 and any equivalents.
The NSK IR series inner ring serves as the inner raceway in needle roller bearings. It fits onto the shaft and gives the rollers a hard, ground surface to run on, which allows compact bearing arrangements with high load capacity. This ring matters most when the shaft itself lacks the hardness or finish needed to work as a raceway. MR Industrial Accessories supplies this series and helps you match the correct part number to your application.
Reading the designation is straightforward: the letters IR come first, followed by a number that reflects bore diameter and width. A suffix such as -1 marks a dimensional variant, usually a different width. So IR-68 and IR-68-1 share a series but not the same width, and other references in the line cover further combinations of diameter and width.
These rings suit needle roller bearings and roller assemblies built around a removable inner raceway. You will find them where radial space is tight and load capacity still has to be high: gearboxes, pumps, compressors, machine tools and mining equipment. Repair shops and production lines both order them from us.
Selection comes down to three things: shaft diameter, bearing width and the type of load. The IR series is made to controlled tolerances with ground surfaces, so fit and service life depend on checking alignment between ring and shaft and on keeping lubrication in good condition. When a shaft is worn, fitting an inner ring restores function without replacing the shaft itself.
Inner rings in the NSK IR series can be exchanged with parts from other makers that use the same dimensional designation, though tolerances and surface treatment are worth confirming first. Dimensions and quality vary between manufacturers. If you only have another brand's number, or a part you cannot identify, send us the details and we will point you to the closest compatible option.
To order, message us on WhatsApp or by email with the part number or the dimensions you need. We quote the exact reference and can also help if the designation or the mounting is unclear.
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 -1 suffix mean on an NSK IR series inner ring?
- It signals a dimensional variant in the series, typically a width that differs from the base reference. IR-68-1, for instance, is not the same width as IR-68. Check the complete part number before ordering.
- How do I identify the inner ring my needle roller bearing needs?
- Shaft diameter, bearing width and the outer bearing's part number are the details that let us match you to the right ring. If you still have the old part, send its number and we will quote that reference.
- Can NSK IR series inner rings replace parts from other brands?
- Interchange is possible when dimensions and tolerances line up, but manufacturers do not all work to the same standards. Give us another brand's number and we will identify a compatible alternative for your equipment.