SKF N 312 M/P63 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Other brands for this category
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Decoding SKF N 312 M/P63
- N 3Series
- Cylindrical roller bearings, N 3 series. Series differ in outside diameter and width even when the bore is the same.
- 12Bore
- Bore 60 mm (12 × 5).
- M/P63Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
N 312 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF N 312 M/P63 measures 60 mm across the bore and 130 mm across the outside diameter; its width is 31 mm (60 x 130 x 31 mm).
SKF N 312 M/P63 belongs to cylindrical roller 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 N 312 M/P63 and any equivalents.
Cylindrical roller bearings from SKF are built for machinery that carries heavy radial loads and runs at considerable speed. The cylindrical roller and cage design keeps operation precise in tough duty. You will find them in gearboxes, pumps, industrial fans and power transmission equipment. MR Industrial Accessories LLC supplies them as part of its SKF bearing line and helps you match the right designation to your application.
Reading the code tells you most of what you need. A leading N means a single-row cylindrical roller bearing: the inner ring carries two ribs, the outer ring none, so the shaft can move axially inside the bearing. The M suffix identifies a machined brass cage, which suits high speeds and elevated temperatures. P63 then covers precision and clearance, where P6 is a tighter dimensional and running tolerance than normal and 3 means radial clearance above standard. Put together, N 312 M/P63 is a series 312 bearing with a brass cage, P6 precision and C3 clearance.
Typical users are in metallurgy, cement, paper and food processing. The bearings appear in speed reducers, centrifugal pumps, industrial fans, conveyor belts and machine tools, as well as in large electric motors and transmissions that call for stiffness and precision. Their capacity for radial load and speed is what makes them a fit for equipment running continuously.
Selection comes down to radial load, speed and the surrounding conditions. Where dust or moisture is present, look at shielded or sealed variants. Clearance should follow the working temperature and the mounting fit; C3 is the usual choice when heat expands the components. Grease or oil both work as lubrication, and the supports must be aligned carefully so no extra load reaches the bearing. Mounting and axial fixing should follow the manufacturer's instructions.
Equivalent bearings from other makers that use the same standardized designation, FAG, NSK or NTN among them, can be considered when dimensions and tolerances line up. In some cases an N series bearing crosses to a NU series, but the ribs and cage type have to be checked first. Whether an interchange works always depends on the application and how the bearing operates.
If you need this bearing, or want to confirm the correct designation for your equipment, send the part number to MR Industrial Accessories LLC by WhatsApp or email. The team can suggest equivalents, help with the selection and return a quote.
Dimensions
60 x 130 x 31 mm (d x D x B): boundary dimensions for basic designation N 312, according to ISO 15.
- Bore
- 60mm
- Outside diameter (D)
- 130mm
- Width (B)
- 31mm
Same size, other brands
Other brands' pages with basic designation N 312: 60 x 130 x 31 mm (d x D x B) per ISO 15.
- FAGN312-E-XL-TVP2
- NSKN 312
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
- SKF N 312 M/P63 bearing: what are its dimensions?
- SKF N 312 M/P63 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 N 312.
- When should I specify C3 clearance instead of normal clearance?
- C3 gives more radial clearance than normal. Choose it when the bearing runs hot, because thermal expansion takes up clearance. At room temperature with standard fits, normal clearance is generally enough.
- Can another brand replace an SKF bearing?
- Yes, provided the designation and dimensions are the same. FAG, NSK and NTN all build equivalents to international standards. Compare tolerance, clearance and cage type before you swap, and ask us with the part number if anything is unclear.