NSK R 155 ZZS deep groove ball bearing
- Brand
- NSK
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
- Series
- Inch Series
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Description
NSK R 155 ZZS 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 R 155 ZZS and any equivalents.
For inch-dimension machinery, the NSK R ZZS series delivers a single row deep groove ball bearing that handles moderate radial and axial loads in either direction. Its compact envelope suits tight assemblies where rotation must stay smooth and precise. Part numbers combine an inch-series model with the ZZS suffix, and MR Industrial Accessories LLC quotes them on request.
Reading the code helps you specify correctly. The R marks the inch series. The following digits, as in R 2-6, R 133, R 155 or R 156, set the size within that series. ZZ means two metal shields; S denotes the standard design. Those shields block contaminants and keep lubricant in place, which supports service life in dusty or dirty areas.
These bearings appear in small electric motors, fans, centrifugal pumps, compressors, machine tools and power transmission equipment. Food, textile and automotive operations also use them where low maintenance matters. They run well at moderate and high speeds, so continuously operating equipment is a common fit.
Selection depends on the radial and axial load, the rotation speed and the surrounding conditions. The shielded R ZZS version suits dusty or moderately humid settings. For submerged duty or liquid exposure, add sealing. Use proper mounting tools and avoid striking the balls or raceway directly. Factory lubrication normally covers the full service life in standard applications; severe conditions may call for relubrication.
Interchange is possible with other brands that use the same inch dimensions and nomenclature, including SKF, FAG or NTN, provided bore, outside diameter and width align. Check the protection type and precision class, because these can differ between makers. Send the original part number and we will identify a compatible alternative.
To get a quote, send the complete part number by WhatsApp or email. MR Industrial Accessories LLC serves customers across the United States and in several Latin American countries, replies promptly, and can suggest equivalents or help you choose. If you need a specific inch-series size, include that detail.
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 do the ZZS letters mean on an NSK bearing?
- ZZ stands for two metal shield plates, and S indicates the standard design. The shields keep dust out and hold lubricant in, which helps in contaminated environments.
- How can I identify the right R series size?
- You need the bore, outside diameter and width, or the original complete part number. With those details we quote the exact size. If the number is missing, we can assist with identification.
- Is it possible to use another brand instead of NSK R ZZS?
- Yes, when the inch dimensions and protection type match. SKF, FAG and NTN offer equivalents. Share the part number and we will confirm a compatible option.