NSK MR 128 ZZ1 deep groove ball bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
- Series
- MR
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Description
NSK MR 128 ZZ1 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 128 ZZ1 and any equivalents.
For assemblies where radial space is tight, the NSK MR series deep groove ball bearing offers a compact, single-row solution. It handles moderate radial and axial loads in both directions while running with low friction and allowing high speeds. The double ZZ metal seals keep lubricant in and contaminants out. MR Industrial Accessories LLC supplies this bearing to customers across the United States and in several Latin American countries.
The MR series code uses a three-digit number to indicate the bearing's compact size. Suffixes carry additional meaning: ZZ stands for double metal sealing, and the final digit points to a specific dimensional variant. Each complete code corresponds to one size and is quoted individually.
Typical uses include small electric motors, fans, centrifugal pumps, packaging machinery, measuring instruments and light transmission mechanisms. In the automotive field, they appear in alternators and tensioners. Robotics and automation also rely on them where speed and smooth rotation matter. Their small outer diameter suits assemblies with limited space.
When selecting, consider the sealing type. The ZZ variant guards against dust and moisture, but in very dirty or wet environments other seals may be needed. Factory lubrication covers most cases; high temperatures or speeds might call for a special grease. Mount with suitable tools, avoid striking the rings, and check shaft and housing alignment to prevent parasitic loads.
NSK MR series bearings can be interchanged with other brands that share the same dimensions and tolerances. To find an equivalent, compare bore, outer diameter and width, plus sealing type and load capacity. A similar code alone is not enough—extra letters and numbers can mean different characteristics between manufacturers. If unsure, MR Industrial Accessories LLC can help identify a compatible option for your equipment.
To request a quote for an MR series bearing, send the full code or your application dimensions via WhatsApp or email. The team replies promptly with the quote and technical information. They can also advise on lubrication, mounting and maintenance practices to help extend bearing service life in 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 ZZ suffix mean in MR series bearings?
- ZZ indicates double metal sealing, one on each side. This seal protects against dust and moisture while helping retain lubricant. It is a common choice when a balance between protection and low friction is needed.
- How do I choose between a sealed and an open bearing?
- If the environment contains dust, chips or moisture, choose the ZZ sealed version. If the bearing will be lubricated frequently or runs at very high speeds, an open bearing may be preferable. The decision depends on working conditions and planned maintenance.
- Do NSK MR series bearings have equivalents from other brands?
- Yes, they can be interchanged with bearings from other brands that share the same dimensions and tolerances. When comparing, check bore, outer diameter and width, type of sealing and load capacity. If you have a code from another brand, send it to us and we will identify the compatible alternative.