NSK MR 148 ZZ deep groove ball bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
- Series
- MR
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Description
NSK MR 148 ZZ belongs to deep groove ball 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 MR 148 ZZ and any equivalents.
The NSK MR ZZ deep groove ball bearing handles radial and axial loads in both directions. Its compact build suits high-speed operation, and the two steel shields on either side keep contaminants out while holding lubricant in, which helps the bearing last in tough conditions.
Reading the code: MR stands for the medium-section deep groove ball bearing series, and the ZZ suffix tells you there are two steel shields, one per side. The numbers that follow—as in MR 62 ZZ, MR 63 ZZ or MR 72 ZZ—set the size and load capacity. That structure lets you match a bearing to your dimensions quickly.
You will find these bearings in electric motors, pumps, fans, compressors, conveyor belts and agricultural machinery. Because they take radial and axial loads, they fit equipment running at moderate to high speeds. Automotive uses include alternators, tensioner pulleys and rollers. They also show up in power transmission equipment and anywhere smooth, quiet running matters.
Selection depends on the radial and axial load, the rotation speed and the environment. The ZZ shield keeps out dust and moisture, but for liquid exposure consider a rubber-sealed version (2RS). Check internal clearance and lubrication: confirm the bearing is pre-lubricated from the factory. During mounting, align it correctly and avoid impacts that could damage the raceways. Use the right tools for mounting and dismounting.
For equivalents, NSK MR ZZ series bearings can be interchanged with other brands that use the same dimensional nomenclature, such as SKF, FAG or NTN, provided dimensions and seal type match. Verify tolerances and internal clearance for compatibility. If you are unsure, send us the original part number and we will point you to a compatible alternative.
To get a quote, send the complete part number via WhatsApp or email. We quote the part number or the exact size you specify. Our team also suggests equivalents and helps you choose the right bearing for your application.
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 ZZ suffix mean in MR bearings?
- The ZZ suffix means the bearing has two steel shield seals (metal shielded) on both sides, which block contaminants and keep lubricant in.
- How do I choose between a bearing with ZZ seal and one with 2RS seal?
- The ZZ seal works well in dry, dusty conditions, while the 2RS (rubber) seal offers better protection against liquids and moisture. Choose based on your equipment's environment.
- Can I replace a bearing from another brand with one from the MR ZZ series?
- Yes, if the dimensions and seal type match. Send us the original part number and we will indicate the equivalent compatible with your equipment.