SKF NJ 256 MA cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NJ 256 MA
- NJ 2Series
- Cylindrical roller bearings, NJ 2 series. Series differ in outside diameter and width even when the bore is the same.
- 56Bore
- Bore 280 mm (56 × 5).
- MASuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NJ 256 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NJ 256 MA measures 280 mm across the bore and 500 mm across the outside diameter; its width is 80 mm (280 x 500 x 80 mm).
SKF NJ 256 MA 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 256 MA and any equivalents.
SKF NJ MA series cylindrical roller bearings handle high radial loads and high speeds, built for demanding machinery such as gearboxes, pumps, and transmission systems. MR Industrial Accessories LLC supplies this SKF line to customers across the United States, Canada, Mexico, and South America, and can help you identify the correct part number for your application.
Reading the designation: NJ indicates the cylindrical roller series, the following number gives the dimension series and bore size, and the MA suffix identifies a construction variant. For instance, NJ 248 MA and NJ 1060 MA have different bore sizes and outside diameter series. To order, provide the full reference from your equipment or drawing.
Typical industries include metallurgy, cement, mining, and food processing. These bearings appear in speed reducers, gearboxes, centrifugal pumps, industrial fans, and machine tools. Their capacity for significant radial loads and minimal misalignment makes them common in gear transmissions and continuous-process rotating equipment.
Selection depends on radial and axial loads, rotation speed, and environmental conditions. Proper installation requires cleanliness, correct support alignment, and suitable lubrication. Mount the NJ MA series with the fits recommended for the bore and shaft; respecting tolerances helps prevent premature failure.
When seeking equivalents from other brands, part numbers may share the basic designation but differ in suffixes or construction details. Bring us a part number from another brand or an unidentified part, and we will identify a compatible alternative or quote the SKF part number you need. Always verify interchangeability against dimensions and load capacity.
If you have the part number for your SKF NJ MA bearing, send it via WhatsApp or email for a prompt quote. We can also help identify the correct reference from housing or shaft dimensions. MR Industrial Accessories LLC is here to help you find the part your machine requires.
Dimensions
280 x 500 x 80 mm (d x D x B): boundary dimensions for basic designation NJ 256, according to ISO 15.
- Bore
- 280mm
- Outside diameter (D)
- 500mm
- Width (B)
- 80mm
Frequently asked questions
- SKF NJ 256 MA bearing: what are its dimensions?
- SKF NJ 256 MA measures 280 mm across the bore and 500 mm across the outside diameter; its width is 80 mm (280 x 500 x 80 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NJ 256.
- What does the NJ MA designation mean on these bearings?
- NJ denotes the cylindrical roller series and MA a construction variant within that family. The number between them indicates the dimension series and bore size. For a full part number, ask us with the exact reference.
- How do I determine which NJ MA bearing fits my equipment?
- You need the shaft and housing dimensions, radial and axial loads, and operating speed. With that data we help you select the right part number. If you have the original part number, send it to us and we will quote it.
- Can I replace a bearing from another brand with an SKF NJ MA?
- Often yes, but interchangeability depends on matching main dimensions and load capacity. If you provide the original brand's part number or dimensions, we will identify the right SKF equivalent and quote it via WhatsApp.