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Needle roller bearing MCGILL MI 31
- Manufacturer Part Number
- MI 31
- Brand
- MCGILLOfficial brand
- Category
- Bearings
- Subcategory
- Needle roller bearing
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Description
MCGILL MI 31 is a needle roller bearing reference, within Bearings. Request a quote for MI 31 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The MCGILL MI series needle roller bearing is a component with a very small radial section that handles radial loads in spaces where other bearings do not fit. It is used in machine tools, power transmission equipment and mechanisms with oscillating motion or continuous rotation. MR Accesorios Industriales carries this line as an official brand, with technical advice to choose the right size according to the housing and the shaft.
The MI series designation is read as a family of needle roller bearings identified by those letters, followed by a number that indicates the size or the main dimension of the assembly. In the examples MI 6, MI 8, MI 10, MI 12, MI 13, MI 14, MI 15 and MI 16, the number increases in steps and orders the different available sizes. To interpret each code precisely, the best approach is to send the complete model and check the corresponding data sheet.
These bearings are used in industries in Argentina such as metalworking, food, plastics and wood. They appear in spindles, cams, pumps, compressors, industrial sewing machines and power transmission equipment where radial space is critical. They are also found in low-speed oscillating mechanisms and in assemblies where high load capacity is needed in a small outside diameter.
To select the correct bearing, take into account the shaft diameter, the housing and the available width. Check the type of sealing or protection the assembly allows, because the needles are sensitive to contamination. Lubrication must be adequate and the alignment between shaft and housing, careful. If the motion is oscillating, check that the lubricant reaches all the needles. If in doubt, send the code and we will guide you.
As for equivalents, needle roller bearings are identified by dimensional standards shared by different manufacturers. The same size may appear with different commercial codes depending on the brand, but the shaft, outside and width dimensions usually match. Do not replace one bearing with another without verifying those dimensions and the cage type. If you need an alternative, consult us with the original code and we will look for the compatible option.
MR Accesorios Industriales carries the MCGILL brand as part of its bearing line. If you already have the MI code you need, write to us on WhatsApp and we will send you the quote shortly. We can also help you identify the size if you give us the shaft and housing dimensions.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the MI series mean in MCGILL bearings?
- The MI series identifies a family of needle roller bearings with a small radial section. The number that follows indicates the size or the main dimension of the assembly. To know the exact size of each code, send us the complete model and we will give you the technical data.
- How do I choose the right needle roller bearing for my machine?
- You need to know the shaft diameter, the housing diameter and the available width. The type of motion, the load and the environmental conditions also matter. With that data we will guide you so you can choose the MI model that best fits.
- Do MCGILL needle roller bearings have equivalents with other brands?
- Yes, many needle roller bearings share standardized dimensions between manufacturers. However, each brand may have variants in cage, sealing or tolerances. If you send us the original code, we will verify the dimensions and offer you a compatible alternative.

