SKF NN 3036 K/SPW33 cylindrical roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Cylindrical roller bearings
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Decoding SKF NN 3036 K/SPW33
- NN 30Series
- Cylindrical roller bearings, NN 30 series. Series differ in outside diameter and width even when the bore is the same.
- 36Bore
- Bore 180 mm (36 × 5).
- K/SPW33Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
NN 3036 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF NN 3036 K/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 NN 3036 K/SPW33 and any equivalents.
The SKF NN line covers double row cylindrical roller bearings built with a tapered bore, aimed at machinery that runs fast and carries heavy radial loads while staying rigid and precise. You will find them in machine tool spindles and similar industrial equipment. MR Industrial Accessories LLC supplies this SKF range to customers in the United States and Latin America.
Reading the code helps you confirm what you are ordering. The NN prefix tells you the bearing has two rows of cylindrical rollers. The digits after it are the size code. A K means the bore is tapered at 1:12, so it mounts on a tapered shaft seat. SP marks the high precision class. When a W number such as W33 appears, the outer ring carries a lubrication groove plus holes. Putting it together, NN 3028 K/SPW33 is a double row unit, tapered bore, high precision, with lubrication provisions.
Typical duties include machine tool main spindles, rolling mill rolls, large electric motors and power transmission equipment. Metalworking, automotive, energy and capital goods operations all rely on this type of bearing. The two row layout lets the bearing take heavy radial loads and moments while holding rotational accuracy.
Selection comes down to the radial load, the speed of rotation and how the bearing will be lubricated. Because the bore is tapered, mounting onto a tapered seat produces a controlled interference fit. Check alignment before installation and use the correct mounting method so the raceways are not damaged. Grease or oil both work depending on the application, and on W33 versions the groove and holes feed lubricant more effectively. Follow the mounting tolerances and the manufacturer's guidance.
Replacements often come from a different brand, and each maker uses its own coding. Even so, double row cylindrical roller bearings with a tapered bore and high precision tend to follow similar designations. Compare bore, outer diameter and width, load capacity and precision class rather than trusting the code by itself. MR Industrial Accessories LLC can review the specifications with you and point to a suitable option.
To request a quote, send the complete bearing code by WhatsApp or email. Include the application details if you have them, and the team will respond promptly, suggest equivalents and help you confirm the right choice.
Dimensions
- Bore
- 180mm
Frequently asked questions
- What does the SP suffix indicate on an SKF bearing?
- It identifies the bearing as high precision, meaning dimensional and rotational tolerances are tighter than those of a standard bearing. That matters in equipment that needs smooth, exact rotation, such as machine tool spindles.
- Why does an NN bearing have a tapered bore?
- The K suffix means the bore is tapered at 1:12, which allows mounting on a tapered shaft seat and gives a controlled interference fit. It also simplifies mounting and dismounting and helps distribute load evenly.
- How do I check that an NN bearing fits my equipment?
- Confirm bore, outer diameter and width, along with the required load capacity and operating speed. Lubrication type and the conditions where the machine runs also matter. With that information, we can help you select the correct bearing.