INA IR240 needle roller bearing
- Brand
- INA
- Category
- Bearings
- Subcategory
- Needle roller bearing
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Description
INA IR240 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 IR240 and any equivalents.
When a shaft is not hard or ground enough to serve as a direct raceway, an INA IR series inner ring provides the hardened, precise surface the needles need. MR Industrial Accessories LLC supplies this INA line to maintenance and purchasing teams across the United States and Latin America, and can help you match the ring to your shaft and bearing.
Reading the IR code is straightforward: the letters indicate an inner ring, and the following digits refer to the shaft diameter or nominal size. Because several sizes share similar numbers, it is best to send the full part number, such as IR5, IR6, IR7, IR8, IR9, IR10, IR14 or IR15, so we can confirm the exact equivalent and the right size for your application.
These rings are common in machine tools, transmissions, pumps, compressors, conveyors and other mechanisms where the shaft lacks the hardness or finish required for needles to run directly on it. They help reduce wear and extend shaft life in production equipment, food processing, metalworking and process plants.
Selection depends on shaft diameter and length, load type, operating speed and available space. Proper mounting calls for cleanliness, alignment and suitable lubrication—grease or oil, depending on conditions. If the shaft is worn, inspect the raceway first; any imperfection will transfer to the bearing.
Inner rings are offered under various brands and nomenclatures, and interchangeability is not automatic. Inner diameter, outer diameter, width, tolerances and raceway type must all be compared. Even when part numbers look alike, it is wise to verify the equivalent with a specialist before replacing a component.
Send your ring part number or shaft size by WhatsApp or email, and we will quote promptly. We can also help you identify the correct INA series for your equipment and answer mounting or lubrication questions.
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 is the difference between a needle roller bearing with an inner ring and one without?
- The inner ring supplies a hardened and ground raceway on the shaft. It is used when the shaft does not have the necessary hardness or finish. Without a ring, the needles run directly on the shaft, which must be heat-treated and ground.
- How do I determine the correct IR ring size?
- You need the shaft diameter, bearing width and load type. With the INA part number or shaft dimensions, we can confirm the equivalent reference and provide a quote.
- Can an IR ring from one brand be replaced by another?
- Sometimes, but it is not automatic. Inner diameter, outer diameter, width, tolerances and raceway type must be compared. Even if part numbers are similar, interchangeability depends on those dimensions. Contact us with the part number for advice.