NTN 4T-387A/382A tapered roller bearing

NTN 4T-387A/382A 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-387A/382A and any equivalents.

When a machine has to handle radial and axial forces at the same time, a tapered roller bearing is often the answer. Its cone and cup design makes line contact, spreading the load across a wider area, which gives high capacity and stiffness. You will find these bearings in gearboxes, reducers, wheel hubs, and general industrial equipment where precision and long service matter.

Reading the code helps you order the right set. Take examples like 4T-350A/354A, 4T-359A/354A, 4T-369A/362A, 4T-370A/362A, 4T-385A/382A, 4T-386A/382A, 4T-387A/382A, and 4T-388A/382A. The 4T prefix tells you it is a single-row tapered roller bearing. The J series uses standard dimensions. The numbers and letters after the prefix define the cup and cone size and features, and they come as a matched set. Always check the NTN dimension tables to decode a specific code.

These bearings show up in many places: vehicle transmissions, speed reducers, wheel axles on farm equipment, mining machines, cranes, and conveyor lines. Machine tool spindles and rail applications also use them. Because they take combined loads, they fit tough environments where reliability and service life are priorities. MR Industrial Accessories supplies NTN bearings for both replacement and new builds.

Choosing the right bearing means looking at radial and axial load, speed, lubrication, and mounting. Check internal clearance and alignment during installation, since tapered rollers do not tolerate misalignment well. Good sealing and lubrication help the bearing last longer. NTN offers variants with different cages and treatments. If you need help, our team can guide you to the correct part number for your equipment.

Tapered roller bearings follow international standards, so interchanging brands is often possible. Still, tolerances and materials can differ from one maker to another. When you replace a bearing, confirm the critical dimensions and the contact angle. If you have a part number from another brand, we can quote the NTN equivalent. The 4T and J series cover a wide range of applications.