NTN E-67791D/67720/67721D tapered roller bearing de doble hilera

NTN E-67791D/67720/67721D belongs to tapered roller bearing de doble hilera, 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 E-67791D/67720/67721D and any equivalents.

When a shaft has to carry radial load together with axial thrust in both directions, a double row tapered roller bearing is often the answer. NTN builds these as a single assembly with two rows of tapered rollers in one frame, which gives the rigidity and load capacity that gearboxes, machine tool spindles and mining equipment demand. MR Industrial Accessories supplies the NTN line and helps you match the right part number to the application.

Reading the designation is the first step. NTN uses a prefix followed by two groups of digits separated by slashes, as in E-67791D/67720/67721D. The E prefix marks a special execution, the digits define the dimensions and internal design of each row, and suffixes such as D point to a variant in roller design or heat treatment. Every complete part number describes one specific assembly, so the nomenclature has to be respected when you request a quote.

These bearings turn up in mining equipment, cement plants, steel mills and machine tool building, and also in large gearboxes, overhead cranes and power transmission systems that run under combined loads and call for high precision. Because they take axial load in both directions, they fit positions where other bearing types do not perform the same way.

Selection depends on the size and direction of the loads, the rotation speed and the working environment. During mounting, alignment and adjustment of internal clearance matter, and that clearance is normally set with shims or lock nuts. Use the lubricant specified by the manufacturer, and choose sealing according to how much dust or moisture the bearing will see. Poor mounting shortens bearing life.

Equivalents exist across brands, but each manufacturer sets its own tolerances and load capacities, so not every series swaps without checking fits. If you are replacing a bearing from another brand, send the complete part number or the main dimensions and we will quote the equivalent NTN option.

To get a quote on an NTN double row tapered roller bearing, message us on WhatsApp or by email with the part number or the dimensions you need. We quote the exact reference, assist with the nomenclature and can suggest equivalents or help you choose a specific variant.