FAG NN3076-AS-K-M-SP super precision bearing

FAG NN3076-AS-K-M-SP belongs to super precision 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 NN3076-AS-K-M-SP and any equivalents.

For machine tool spindles that must hold tight tolerances at speed, the FAG NN-AS-K-M-SP series delivers the rigidity and low friction that grinding, milling, and boring operations demand. These double-row cylindrical roller bearings are built for setups where rotational accuracy and thermal stability are not optional. MR Industrial Accessories supplies this line and can help you match the right variant to your spindle.

Reading the part number helps you confirm what you are ordering. NN tells you it is a double-row cylindrical roller bearing. The digits that follow, such as in NN3026 or NN3032, relate to the section size. Then the suffixes: AS points to a lubrication groove and holes, K to a machined brass cage, M to a solid cage, and SP to the super precision class. So NN30/500-AS-K-M-SP and NN3038-AS-K-M-SP belong to the same design family.

You will find these bearings in grinding machine spindles, milling machines, boring machines, and high-speed machining centers. They also show up in measuring heads, precision rotary tables, and metrology equipment. Their job is to keep the spindle deviation to a minimum, even when running fast and carrying combined loads.

Selection comes down to a few key points: maximum speed, axial and radial load, and lubrication method. The series works with grease or oil, and often needs a controlled interference fit. Check that the housing and shaft are concentric before mounting. If coolant or particles are present, add extra sealing. Internal clearance and preload should match the rigidity you need. Clean mounting with the right tools goes a long way toward service life.

When swapping brands, super precision double-row bearings can interchange by dimensions and precision class, but suffixes and tolerances may not line up. Compare bore diameter, outer diameter, width, ISO class, and cage style rather than trusting a similar part number. Two close designations can differ in preload or lubrication. MR Industrial Accessories can walk you through that comparison and suggest an alternative that fits your spindle.

To replace a bearing in this series, send the full part number to MR Industrial Accessories via WhatsApp. With the model and application details, the technical team reviews the variant and replies with a quote. You can also ask about other super precision designs or special bearings for your equipment.