SKF N 312 M/P63 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Since 1945 · Martínez, Buenos Aires, Argentina
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Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
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How to read SKF N 312 M/P63
- N 3Series
- Cylindrical roller bearings, N 3 series. For the same bore, each series has a different outside diameter and width.
- 12Bore
- 60 mm bore: 12 × 5.
- M/P63Suffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
N 312 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF N 312 M/P63 bearing has a 60 mm bore, a 130 mm outside diameter and a 31 mm width (60 x 130 x 31 mm).
SKF N 312 M/P63 is a reference of cylindrical roller bearing, within Bearings. Request a quote for N 312 M/P63 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF cylindrical roller bearings are components designed to withstand high radial loads and considerable speeds. Their design with cylindrical rollers and brass or steel cage allows precise operation in demanding applications. They are used in industrial machinery, gearboxes, pumps and power transmission equipment. At MR Accesorios Industriales we sell them as part of our SKF bearing line, with technical advice so you can choose the right one for your application.
The designation of these bearings follows a clear scheme. The letter N indicates that it is a single-row cylindrical roller bearing, with two ribs on the inner ring and none on the outer ring, which allows axial displacement. The suffix M indicates that the cage is machined brass, suitable for high speeds and temperatures. Then, P63 defines the precision class and internal clearance: P6 is a tighter dimensional and running tolerance than normal, and the 3 indicates a radial clearance greater than standard. For example, the code N 312 M/P63 combines these characteristics: series 312, brass cage and P6 precision with C3 clearance.
These bearings are used in industries such as metallurgy, cement, paper and food. In Argentina, they are common in speed reducers, centrifugal pumps, industrial fans, conveyor belts and machine tools. Their ability to withstand high radial loads and operate at high speeds makes them ideal for equipment subjected to continuous work. They are also used in large electric motors and in power transmissions where rigidity and precision are required.
To select the right bearing, take into account the radial load, rotation speed and environmental conditions. Sealing is key: if there is dust or moisture, consider variants with shields or seals. Internal clearance should be chosen according to the working temperature and mounting fit; a C3 clearance is recommended when heating expands the components. Lubrication can be with grease or oil, and alignment between supports must be careful to avoid additional loads. Follow the manufacturer's instructions for mounting and axial fixing.
As for equivalents, SKF cylindrical roller bearings can be interchanged with those of other brands that follow the same standardized designation, such as FAG, NSK or NTN, as long as dimensions and tolerances match. The N series is interchangeable with the NU series in some cases, but check the ribs and cage type. Interchangeability depends on the application and operating conditions.
If you need this bearing or want to confirm the correct designation for your equipment, send us the part number via WhatsApp at MR Accesorios Industriales. We advise you and send you a quote with no obligation.
Dimensions
Boundary dimensions of the basic designation N 312 per ISO 15: 60 x 130 x 31 mm (d x D x B).
- Bore
- 60mm
- Outside diameter (D)
- 130mm
- Width (B)
- 31mm
The same size in other brands
Pages from other brands with the basic designation N 312: 60 x 130 x 31 mm (d x D x B) per ISO 15.
- FAGN312-E-XL-TVP2
- NSKN 312
They share the boundary dimensions set by ISO 15, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the SKF N 312 M/P63 bearing?
- The SKF N 312 M/P63 bearing has a 60 mm bore, a 130 mm outside diameter and a 31 mm width (60 x 130 x 31 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation N 312.
- What does the suffix M mean in an SKF bearing?
- The letter M indicates that the bearing has a machined brass cage. This type of cage is resistant and suitable for high speeds and temperatures, and is used in applications where greater durability than a stamped steel cage is required.
- How do I choose between a bearing with normal clearance and one with C3 clearance?
- C3 clearance has greater radial clearance than normal. It is recommended when the bearing works at high temperatures, since thermal expansion reduces clearance. If the application is at room temperature and with normal fits, normal clearance is usually sufficient.
- Can I replace an SKF bearing with one from another brand?
- Yes, as long as the designation and dimensions match. Brands such as FAG, NSK or NTN manufacture equivalent bearings under international standards. Check the tolerance, clearance and cage type before replacing. If you have doubts, ask us with the part number.