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NSK NN 3011 KR cylindrical roller bearing de doble hilera

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NSK NN 3011 KR cylindrical roller bearing de doble hilera

Manufacturer part numberNN 3011 KRAlso known as: NN3011KR · NN3011 KR
Brand
NSK
Category
Bearings
Series
NN
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Decoding NSK NN 3011 KR

NN 30Series
Cylindrical roller bearings, NN 30 series. Series differ in outside diameter and width even when the bore is the same.
11Bore
Bore 55 mm (11 × 5).
KRSuffix
NSK suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.

NN 3011 is the standard ISO basic designation, which sets the bearing type, series and bore.

Description

NSK NN 3011 KR belongs to cylindrical roller bearing de doble hilera, 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 NN 3011 KR and any equivalents.

The NSK NN KR series covers double row cylindrical roller bearings built to carry heavy radial loads with a stiff, precise running behavior. Machine tool spindles, gearboxes, presses and similar industrial equipment are typical homes for this line. MR Industrial Accessories LLC supplies these bearings to customers throughout the United States and Latin America, and our team can help you confirm the correct code before you order.

Reading the code is the fastest way to narrow down a replacement. NN tells you the bearing is a double row cylindrical roller type, with two roller rows handling radial force. KR marks a particular execution in the series, usually tied to a machined brass cage and precision characteristics. The number in the middle sets the size, so NN 3005 KR, NN 3006 KR and NN 3012 KR step up in bore and capacity as that figure grows. Always work from the complete code when you need an exact match.

You will find these bearings in machine tools, presses, speed reducers, mining and cement equipment, and power transmission systems in steel plants. Maintenance crews use them on main spindles, support rollers and gearboxes where radial loads run high and speeds stay moderate. Because the double row layout handles the load in a compact envelope, it can take the place of bulkier arrangements and free up space in the assembly.

Selection comes down to the radial load, the rotation speed and the operating environment. Where contamination is a concern, look at variants with extra protection. Use the lubricant the manufacturer calls for, align the mounting carefully and set internal clearance correctly. In precision work, check that the housing bores are concentric. Poor mounting practice shortens service life, so follow sound installation procedures.

On interchangeability, NSK NN KR bearings can be matched to other brands that use the same dimensional nomenclature, but tolerances and internal clearance are not always identical from one maker to another. Confirm the technical data before you substitute. If you are holding a code from a different brand, send it over and we can help you locate the equivalent reference. Never assume a swap is automatic; verify dimensions and operating conditions first.

To request a quote for an NSK NN KR series bearing, message us on WhatsApp with the complete code or the dimensions of your application. Our team can also suggest a compatible alternative if you provide another brand's reference, and we reply promptly.

Dimensions

Bore
55 mm

Frequently asked questions

What does the NN KR designation mean on NSK bearings?
NN identifies a double row cylindrical roller bearing, and KR indicates a specific execution in the series, typically with a brass cage and precision characteristics. The middle number defines the size and load capacity.
Where is the NN KR series typically used?
Machine tool spindles, gearboxes, presses and other equipment that needs high radial load capacity and rigidity. It is common in industrial maintenance and continuous process plants.
How do I request a quote for an NN KR bearing?
Send the complete code, such as NN 3005 KR, or the main dimensions via WhatsApp. We quote promptly and help you choose the right variant for your application.
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