SKF NJ 330 ECM cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Other brands in this category
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How to read SKF NJ 330 ECM
- NJ 3Series
- Cylindrical roller bearings, NJ 3 series. For the same bore, each series has a different outside diameter and width.
- 30Bore
- 150 mm bore: 30 × 5.
- ECMSuffix
- SKF suffix: it defines the variant (sealing, cage, internal clearance or other features).
NJ 330 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The SKF NJ 330 ECM bearing has a 150 mm bore, a 320 mm outside diameter and a 65 mm width (150 x 320 x 65 mm).
SKF NJ 330 ECM is a reference of cylindrical roller bearing, within Bearings. Request a quote for NJ 330 ECM via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
SKF NJ series cylindrical roller bearings are components designed to withstand high radial loads and considerable speeds. Their design with cylindrical rollers and steel cage allows precise operation in demanding industrial applications. They are used in rotating machinery where high load capacity and rigidity are required, such as electric motors, pumps, compressors and transmission equipment. At MR Accesorios Industriales we offer them as part of our SKF bearing line.
The designation NJ … ECM is interpreted as follows: NJ indicates that the bearing has two ribs on the outer ring and one on the inner ring, allowing relative axial displacement in one direction. The central number (for example, 207, 208, 209) corresponds to the size and dimension series. The suffix ECM indicates an optimized design with a one-piece machined brass cage, centered window and roller-guided, suitable for high speeds and loads. Examples: NJ 207 ECM, NJ 208 ECM, NJ 209 ECM.
These bearings are used in industries such as metallurgical, cement, paper, mining and food. In Argentina, they are common in large electric motors, gearboxes, centrifugal pumps, industrial fans and machine tools. Their ability to withstand heavy radial loads and their rigidity make them suitable for gear transmissions and applications where high rotational precision is required.
To correctly select an NJ … ECM bearing, take into account the radial and axial load, operating speed and environmental conditions. Verify the appropriate internal clearance according to temperature and fit. Lubrication can be grease or oil; choose the lubricant according to speed and temperature. It is essential to ensure precise alignment between housing and shaft, and assembly with the appropriate tools to avoid damage to the rollers and raceways.
SKF NJ series cylindrical roller bearings can be interchanged with those from other brands that follow the same standardized designation, such as FAG, NSK, NTN or Timken, provided dimensions and tolerances match. When looking for equivalents, verify not only the code but also the cage suffix and internal clearance. At MR Accesorios Industriales we can advise you to find the right replacement.
If you need an SKF NJ … ECM cylindrical roller bearing, contact us via WhatsApp. At MR Accesorios Industriales we help you identify the correct part number and select the product for your application. Send us your inquiry and we will respond promptly.
Dimensions
Boundary dimensions of the basic designation NJ 330 per ISO 15: 150 x 320 x 65 mm (d x D x B).
- Bore
- 150mm
- Outside diameter (D)
- 320mm
- Width (B)
- 65mm
The same size in other brands
Pages from other brands with the basic designation NJ 330: 150 x 320 x 65 mm (d x D x B) per ISO 15.
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 NJ 330 ECM bearing?
- The SKF NJ 330 ECM bearing has a 150 mm bore, a 320 mm outside diameter and a 65 mm width (150 x 320 x 65 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation NJ 330.
- What does the ECM suffix mean on an NJ bearing?
- The ECM suffix indicates that the bearing has a one-piece machined brass cage, with centered window and roller-guided. This cage is suitable for high speeds and loads, and allows better roller guidance.
- Does this bearing support axial loads?
- Yes, but only in one direction, due to its design with one rib on the inner ring and two on the outer. For axial loads in both directions, other designs are needed, such as the NJ with an additional ring or angular contact ball bearings.
- How do I choose the right lubricant for an NJ bearing?
- The choice depends on speed, temperature and environment. For high speeds, oil is recommended; for moderate speeds, grease of suitable consistency. Also consider the presence of water or contaminants to choose a lubricant with specific properties.