SKF NJ 328 ECJ cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NJ 328 ECJ
- NJ 3Series
- Cylindrical roller bearings, NJ 3 series. Series differ in outside diameter and width even when the bore is the same.
- 28Bore
- Bore 140 mm (28 × 5).
- ECJSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NJ 328 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NJ 328 ECJ measures 140 mm across the bore and 300 mm across the outside diameter; its width is 62 mm (140 x 300 x 62 mm).
SKF NJ 328 ECJ 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 NJ 328 ECJ and any equivalents.
For maintenance and purchasing teams dealing with high radial loads, the SKF NJ ECJ series is a solid choice. These cylindrical roller bearings feature a single-rib inner ring, which allows direct mounting on the shaft and provides axial guidance in one direction. They handle heavy loads and high speeds, making them a common fit in gearboxes, pumps and machine tools. MR Industrial Accessories supplies this series to customers across the United States and Latin America.
The NJ designation points to a cylindrical roller bearing with one rib on the inner ring and two on the outer ring, so the shaft is guided axially in one direction. The ECJ suffix identifies the stamped steel window cage used in this series. Part numbers such as NJ 205 ECJ and NJ 210 ECJ follow a size code that sets the main dimensions. This layout suits applications that need high radial capacity with some axial freedom.
You will find these bearings in gear reducers, centrifugal pumps, industrial fans, paper machines and other transmission equipment. Their rigidity and radial load capacity make them appropriate for high-speed shafts where precision matters. Machine tool spindles and rolling mill rolls are also typical installations. Industries such as metallurgy, cement, mining and food processing rely on them regularly.
When selecting an NJ ECJ bearing, start with the radial load, rotation speed and operating environment. Check the internal clearance and decide between grease and oil lubrication. Use the right tools during mounting to protect rollers and raceways, and make sure the shaft and housing are properly aligned to avoid extra loads. If dust or moisture is present, consider a bearing with additional seals or shields.
Cylindrical roller bearings from other brands with similar designations may be interchangeable, but always confirm exact dimensions and tolerances. The SKF NJ ECJ series stands out for its stamped steel cage, which balances strength and speed. When replacing a bearing, verify that the new one meets the load and speed requirements of the original equipment. Nomenclature varies between manufacturers, so it is wise to consult a specialist.
If you need an SKF NJ ECJ series cylindrical roller bearing, send the complete part number via WhatsApp or email. The MR Industrial Accessories team replies promptly and can suggest equivalents or help you choose the right option. We serve customers throughout the United States and in several Latin American countries.
Dimensions
140 x 300 x 62 mm (d x D x B): boundary dimensions for basic designation NJ 328, according to ISO 15.
- Bore
- 140mm
- Outside diameter (D)
- 300mm
- Width (B)
- 62mm
Same size, other brands
Other brands' pages with basic designation NJ 328: 140 x 300 x 62 mm (d x D x B) per ISO 15.
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 NJ 328 ECJ bearing: what are its dimensions?
- SKF NJ 328 ECJ measures 140 mm across the bore and 300 mm across the outside diameter; its width is 62 mm (140 x 300 x 62 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NJ 328.
- What does the NJ ECJ designation mean on an SKF bearing?
- The NJ indicates a cylindrical roller bearing with one rib on the inner ring and two on the outer ring, allowing axial guidance in one direction. ECJ refers to the stamped steel window cage. This combination is common in high radial load applications.
- Where are NJ ECJ bearings used?
- They are found in gear reducers, pumps, fans, machine tools and transmission equipment. They suit high radial loads and high speeds. Industries such as metallurgy, cement, mining and food processing use them regularly.
- How do I choose the right NJ ECJ bearing?
- Consider radial load, speed, internal clearance and lubrication. Verify shaft and housing dimensions. If the environment is harsh, evaluate options with additional sealing. Send us the part number and we will advise you.