SKF NNU 4952 BK/SPW33 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NNU 4952 BK/SPW33
- NNU 49Series
- Cylindrical roller bearings, NNU 49 series. Series differ in outside diameter and width even when the bore is the same.
- 52Bore
- Bore 260 mm (52 × 5).
- BK/SPW33Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NNU 4952 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NNU 4952 BK/SPW33 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 NNU 4952 BK/SPW33 and any equivalents.
SKF NNU series cylindrical roller bearings are built to handle significant radial forces and operate at considerable speeds. Their double-row design and steel cage make them a fit for tough industrial settings like rolling mills, gearboxes, and machine tools. MR Industrial Accessories supplies this line to customers throughout the United States and Latin America.
The NNU code denotes a double-row cylindrical roller bearing with two inner rings and a flangeless outer ring. A BK suffix means the bearing uses a stamped steel cage, while SPW33 points to special heat stabilization and a retaining ring groove. Take NNU 4920 BK/SPW33: it brings together these traits for dependable service in highly demanding conditions.
You will find these bearings in steel, cement, mining, and machine tool operations. In US plants, they show up in rolling mills, presses, speed reducers, and material handling equipment. Their capacity for heavy radial loads and their stiffness suit applications that call for precision and durability.
When choosing a bearing, look at the radial load, running speed, and the surrounding environment. Proper mounting means accurate alignment and sufficient lubrication, whether grease or oil. The BK cage and SPW33 treatment contribute strength and dimensional stability. Check internal clearance and sealing to match your application.
For cross-reference, SKF NNU bearings can be replaced by other brands that use the same dimensional designation, but always confirm tolerances and clearance. Interchangeability works when the technical specifications line up. A specialist can help you verify compatibility.
To get a quote on SKF cylindrical roller bearings, reach out to MR Industrial Accessories by WhatsApp or email. Send the exact part number and our team will respond promptly with the details you need for your application.
Dimensions
- Bore
- 260mm
Frequently asked questions
- What does the BK suffix indicate on an NNU bearing?
- BK shows the bearing has a stamped steel cage, which offers strength and accurate roller guidance. It is often found in high-load uses.
- Where is the NNU series typically used?
- It suits applications with high radial loads and moderate speeds, such as rolling mills, gearboxes, machine tools, and heavy industrial equipment.
- How do I request a quote for these bearings?
- Send the part number via WhatsApp or email to MR Industrial Accessories. Our team will provide a personalized quote and technical guidance.