SKF NU 319 EM/C3 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NU 319 EM/C3
- NU 3Series
- Cylindrical roller bearings, NU 3 series. Series differ in outside diameter and width even when the bore is the same.
- 19Bore
- Bore 95 mm (19 × 5).
- EM/C3Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NU 319 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NU 319 EM/C3 measures 95 mm across the bore and 200 mm across the outside diameter; its width is 45 mm (95 x 200 x 45 mm).
SKF NU 319 EM/C3 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 NU 319 EM/C3 and any equivalents.
For equipment that must carry heavy radial loads at speed, the SKF NU series cylindrical roller bearing is a common choice. Its separable design simplifies mounting and service. You will find it in gearboxes, pumps and process lines where stiffness and load capacity matter. MR Industrial Accessories supplies this brand and can help you match the bearing to your application.
Reading an NU code: the letters NU mean the outer ring carries two ribs while the inner ring has none, so the rings can shift axially relative to each other. The digits that follow set the size and dimension series. Suffixes matter too: EM points to a machined brass cage with higher-capacity rollers, and C3 means radial internal clearance above standard. A code such as NU 319 EM/C3 brings those traits together in one bearing.
Industries from cement and steel to paper and food processing rely on this design. Typical installations include speed reducers, mills, conveyor belts, centrifugal pumps and industrial fans. The bearing handles heavy radial loads and resists fatigue, which suits continuous duty. It also fits setups where shaft thermal growth calls for axial freedom.
When selecting an NU bearing, review radial load, speed and the operating environment. Choose C3 clearance if temperature differences between inner and outer rings are significant, since it offsets differential expansion. Lubrication follows temperature and speed: grease for slower running, oil for higher revolutions. During mounting, keep supports aligned and avoid impacts that could mark rollers or raceways. Sealing depends on how contaminated the surroundings are.
Interchange between brands is possible when principal dimensions and radial clearance agree. Keep in mind that suffixes do not always carry the same meaning across manufacturers. Check the full code and tolerances before substituting a bearing. MR Industrial Accessories can help you locate a suitable equivalent reference for your equipment.
To request an SKF NU series cylindrical roller bearing, send the exact code by WhatsApp or email and the team will reply promptly with a quote and technical guidance.
Dimensions
95 x 200 x 45 mm (d x D x B): boundary dimensions for basic designation NU 319, according to ISO 15.
- Bore
- 95mm
- Outside diameter (D)
- 200mm
- Width (B)
- 45mm
Same size, other brands
Other brands' pages with basic designation NU 319: 95 x 200 x 45 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 NU 319 EM/C3 bearing: what are its dimensions?
- SKF NU 319 EM/C3 measures 95 mm across the bore and 200 mm across the outside diameter; its width is 45 mm (95 x 200 x 45 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation NU 319.
- What does the C3 suffix mean in an NU bearing?
- C3 indicates radial internal clearance greater than standard. It is specified when thermal expansion during operation could otherwise reduce clearance and cause problems. High-temperature or interference-fit applications often call for it.
- Does this bearing support axial loads?
- The NU design has no inner ring ribs, so it cannot take axial loads on its own. For combined loads, consider NJ or NUP designs, which include ribs for axial guidance. Contact us if your application needs axial support.
- How do I choose between a brass cage and a steel cage?
- The machined brass cage, shown by the EM suffix, provides greater strength and load capacity and suits high speeds and severe conditions. A stamped steel cage is more economical and adequate for standard duties. The decision depends on your equipment demands.