SKF NN 3005 K/SP cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NN 3005 K/SP
- NN 30Series
- Cylindrical roller bearings, NN 30 series. Series differ in outside diameter and width even when the bore is the same.
- 05Bore
- Bore 25 mm (05 × 5).
- K/SPSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NN 3005 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NN 3005 K/SP 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 NN 3005 K/SP and any equivalents.
For machine tool spindles and similar high-accuracy positions, the SKF NN..K/SP series offers a two-row cylindrical roller bearing with a tapered bore. It handles considerable radial loads at high speed and provides rigidity beyond what ball bearings deliver, which supports fine surface finishes and extended tool life.
Reading the part number helps with selection. The NN prefix signals a two-row cylindrical roller design. The following number sets the size, as in NN 3005 K/SP or NN 3007 K/SP. The K means the bore is tapered at 1:12, and /SP identifies a special precision class with tighter tolerances than a standard bearing.
These bearings suit CNC lathe spindles, milling and grinding machines, machining centers, boring heads and demanding gearboxes. The two-row layout carries heavy radial loads while keeping high rigidity. That combination translates into consistent surface quality and longer tool life.
When choosing a size, review the radial load, operating speed and required precision. The tapered bore allows a controlled interference fit on a tapered shaft or through an adapter sleeve, which helps set internal clearance correctly. Check shaft and housing alignment, and use clean grease or oil suited to the application. In dirty environments, add seals to protect the bearing.
Interchangeability: other makers may use the same standardized designation, but internal tolerances and features can differ. Always confirm specifications before substituting. MR supplies SKF and can suggest equivalents and help you choose. Send the full part number, such as NN 3005 K/SP, via WhatsApp or email for a prompt quote.
Dimensions
- Bore
- 25mm
Frequently asked questions
- What does /SP indicate on an SKF NN..K/SP bearing?
- /SP is a special precision class. Dimensional and rotational tolerances are tighter than a standard bearing, which supports high-accuracy uses like machine tool spindles.
- Is the bore tapered on this series?
- Yes. The K in the designation means a 1:12 tapered bore. That allows a controlled interference fit on a tapered shaft or mounting with an adapter sleeve.
- Where are NN..K/SP bearings typically installed?
- They appear in CNC lathe spindles, milling machines, grinding machines, machining centers, boring heads and high-demand gearboxes where precision and rigidity matter.