TIMKEN NA691A tapered roller bearing de doble hilera

TIMKEN NA691A is a reference of tapered roller bearing de doble hilera, within Bearings. Request a quote for NA691A via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The TIMKEN TNA series double-row tapered roller bearing is an assembly that combines two rows of tapered rollers in a single frame, designed to support radial and axial loads in both directions. It is used in applications requiring high load capacity and rigidity, such as gearboxes, final drives and mining equipment. MR Accesorios Industriales sells this line in Buenos Aires, Argentina.

The TNA series designation is made up of an NA prefix followed by a three-digit number and the final letter A. That combination identifies the size and construction features of the assembly. The TNA series corresponds to double-row bearings, with two tapered roller rows mounted on the same shaft. To correctly interpret each reference, it is best to consult the complete part number with our technical team, who will guide you on the exact variant.

These bearings are chosen in applications where combined loads are demanding: industrial gearboxes, speed reducers, material handling equipment, machinery for the cement and mining industries. In Argentina, we see them in crushing plants, mills, conveyors and continuous process equipment. Their double-row construction allows absorbing radial and axial forces in both directions, which simplifies the support design and improves the stability of the rotating assembly.

To select the correct bearing, take into account the radial and axial load it must support, the rotation speed and the environmental conditions. The TNA series is usually mounted with an interference fit on the shaft and in the housing, depending on the type of load. It is essential to verify alignment between shaft and support, and to choose the appropriate lubricant: grease or oil, with the viscosity and additives required by the application. Sealing or additional protections depend on the level of contamination in the environment.

Regarding equivalents, double-row tapered roller bearings are identified by their specific designation and are not always interchangeable between brands without verifying dimensions and tolerances. TIMKEN has its own nomenclature for this series, and other brands may offer similar products with different codes. If you need to replace an existing bearing, the safest approach is to compare the main dimensions and operating conditions before deciding. Our team can help you find the compatible alternative.

If you already have the part number of the bearing you need, write to us on WhatsApp and we will quote you promptly. At MR Accesorios Industriales we work with the TIMKEN line and can advise you on the application, mounting and lubrication. We support Argentine industry with products and technical support. Send us the part number shown on your equipment, and we will respond with the information you need.