NTN #4T-JM714249/JM714210 tapered roller bearing

NTN #4T-JM714249/JM714210 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-JM714249/JM714210 and any equivalents.

When your equipment needs to handle both radial and axial forces in one direction, an NTN 4T-JM series tapered roller bearing is a common choice. The tapered design creates a line of contact that spreads the load across the rollers and raceways. You will find these bearings in gearboxes, machine tool spindles and other rolling systems where precise motion and rigidity matter. At MR Industrial Accessories, we help you identify the exact bearing for your application.

The part number tells you what you are looking at. Take 4T-JM205149/JM205110: the 4T prefix is an NTN special execution, and JM signals the inch-dimension tapered roller series. The remaining digits are the cone and cup codes. The same pattern appears in 4T-JM511946/JM511910 and 4T-JM720249/JM720210. Each bearing is a matched cone-and-cup pair, so both codes belong together for a proper fit.

These bearings show up across many industries in the United States and Latin America. You will see them in gearboxes, reducers, transmission shafts, road machinery, mining equipment and food processing lines. They also work in conveyor rollers and machine tool spindles. Because they take combined loads, they suit demanding jobs where precision and durability keep production moving.

Choosing the right bearing comes down to the radial and axial load, the speed and the operating environment. Mounting calls for careful alignment and proper lubrication, grease or oil, depending on the sealing. The J series is often installed in pairs with a controlled axial clearance set by lock nuts or shims. Always check clearance after mounting to avoid overheating and get a long service life.

If you are replacing a bearing from another brand, we can help you find an equivalent. Tapered roller bearings are identified by bore diameter, outer diameter and width. Give us those dimensions or the original manufacturer's code and we will quote the matching NTN model. Interchangeability works when dimensions and contact angle match, but it is always wise to verify compatibility.

MR Industrial Accessories supplies NTN bearings. Send us the code or measurements on WhatsApp or by email, and our team will reply promptly with a quote. We can also suggest equivalents and help you choose the right part for your equipment.