NTN 6312MAZZ deep groove ball bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
- Series
- MA
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Decoding NTN 6312MAZZ
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 12Bore
- Bore 60 mm (12 × 5).
- MAZZSuffix
- NTN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6312 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
NTN 6312MAZZ measures 60 mm across the bore and 130 mm across the outside diameter; its width is 31 mm (60 x 130 x 31 mm).
NTN 6312MAZZ 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 6312MAZZ and any equivalents.
The NTN MA series covers single-row deep groove ball bearings built to carry radial and axial loads in both directions. Deep raceways and a one-row ball arrangement let these bearings run at high speed with little attention. You will find them in electric motors, pumps, fans and other plant equipment where steady operation matters. MR Industrial Accessories supplies this series within its NTN bearing range.
Reading the code helps you pick the right unit. The leading digits give the dimension series, 62 or 63, and the MA letters mark characteristics of the series, while a ZZ ending points to construction and sealing details. Part numbers such as 6209MAZZ, 6210MAZZ, 6308MAZZ, 6310MAZZ and 6312MAZZ follow that pattern. Once you recognize the layout, matching a bearing to the application is faster.
Typical users include food, petrochemical, textile and metallurgical plants. The bearings appear in electric motors, centrifugal pumps, fans, conveyors and process machinery, handling combinations of moderate radial and axial load. That range of duties is what makes the series a common choice in maintenance workshops and production lines.
Selection comes down to load, speed and the environment around the bearing. A ZZ seal, made of two steel shields, keeps dust and dirt out, and other versions use rubber seals instead. Correct lubrication and accurate alignment at assembly support a long service life, so follow the maker's guidance on internal clearance and on fits for shaft and housing.
Bearings of this type from different makers can often be swapped when their dimensions and tolerances match the standard. Before substituting one brand for another, confirm the full part number and the technical data. Our team can help you pin down the NTN reference that fits your equipment and keeps the original performance.
For a quote on an NTN MA series deep groove ball bearing, send the exact part number from your equipment or nameplate by WhatsApp or email. We answer promptly, point you to equivalents when needed and help you choose. MR Industrial Accessories serves customers across the United States and in several Latin American countries.
Dimensions
60 x 130 x 31 mm (d x D x B): boundary dimensions for basic designation 6312, according to ISO 15.
- Bore
- 60 mm
- Outside diameter (D)
- 130mm
- Width (B)
- 31mm
SKF and other brands, same size
Other brands' pages with basic designation 6312: 60 x 130 x 31 mm (d x D x B) per ISO 15.
- Need the SKF 6312? We can also quote:63126312-Z6312 NR21 more →
- FAG6312-C6312-C-2Z6312-C-2HRS
- KOYO6312
- NSK63126312 ZZ
- RKB6312
- TIMKEN63126312MB
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- NTN 6312MAZZ bearing: what are its dimensions?
- NTN 6312MAZZ measures 60 mm across the bore and 130 mm across the outside diameter; its width is 31 mm (60 x 130 x 31 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6312.
- What does the MAZZ suffix indicate on an NTN bearing?
- It flags particular traits of the MA series, including seal or cage type. Check the full designation and the technical data in the NTN catalog to read it correctly. Send us the part number on WhatsApp and we will help you identify it.
- How can I tell whether an NTN MA series bearing suits my equipment?
- Compare bore, outer diameter and width, then look at the load and speed conditions. When these line up with the original bearing, it is likely a fit. If anything is unclear, share the part number and measurements with us and we will advise on the right option.
- How do I request a quote for NTN MA series bearings?
- Send the exact part number by WhatsApp or email. Our team replies promptly with the information you need, can suggest equivalents and helps you choose the correct bearing for your application.