NTN 4T-303082FB tapered roller bearing

NTN 4T-303082FB belongs to tapered 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 4T-303082FB and any equivalents.

The NTN 4T-303072FB is a tapered roller bearing built to handle radial and axial loads at the same time. Its rollers sit at an angle between conical raceways, which lets the bearing carry forces from two directions in one assembly. You will find this type of bearing in gearboxes, wheel axles and other industrial machinery where positioning accuracy and load capacity matter.

The part number tells you which execution you are looking at. The 4T- prefix marks a special execution in the NTN catalog, with tolerances and clearances set for demanding work. The base number identifies the size, and the FB suffix points to a particular dimensional and tolerance variant. To be sure of what you are ordering, read the full designation rather than just the base number.

In this series, 4T-303072FB has a 30 mm bore. The 4T-303082FB shares that same bore but is wider, so the two are not direct swaps. That width difference changes how the bearing fits in the housing and how much load it can take, so check the space in your equipment before choosing between them.

These bearings show up in automotive, metallurgical, cement and food processing plants, among others. Typical locations include gearboxes, differentials, machine tool spindles, conveyor rollers and mining equipment. The angled roller arrangement is what makes them suitable for shafts that must turn accurately while radial and axial forces act at the same time.

Selection comes down to a few practical points: the sealing arrangement you need, the internal clearance, and how the bearing will be lubricated. Grease or oil both work, depending on speed and operating temperature. When cone and cup are paired, alignment between them has to be precise, and the axial clearance should be set to the manufacturer's specification to avoid premature wear.

For interchangeability, an NTN bearing can replace one from another recognized brand when the dimensions and tolerances match. Compare the complete part number, including any suffix, because small differences there can mean a different internal design. If you are unsure, send us the original part number and we will help you sort it out.