NSK in mining: what is used in crushers, mills, screens and conveyor belts, and how to order it

NSK needle bearings stand out for their thin section and high load capacity in tight spaces. In mining, they appear in components such as pumps, gearboxes and transmission systems where the available diameter is small. Their design with fine rollers allows them to withstand significant radial loads without increasing the housing size.

To identify them, look at the engraving on the side face. If the part is very worn, measure the inner diameter, outer diameter and width with a caliper. It is also advisable to check whether it has a sheet steel or solid cage, because that influences speed and lubrication.

When ordering them, send the full code and the dimensions. A common mistake is confusing the series because of a misread digit, especially in short codes. We sell NSK needle bearings and will quote you the exact reference or the equivalent alternative according to your equipment.

NSK tapered roller bearings combine radial and axial load in a single component, something typical in jaw and cone crushers. In these machines, the main shaft receives combined forces from ore crushing. The arrangement of the cones allows the internal clearance to be adjusted and withstands impacts.

Check whether the bearing is single-row or double-row, and whether it comes with a steel or brass cage. In crushers, mounting is usually in opposed pairs, so it is advisable to replace both at the same time to maintain alignment.

When requesting a quote, indicate the equipment model and the bearing position (pulley side or flywheel side). We distribute NSK tapered roller bearings and help you confirm the reference by dimensions if the code has been erased.

NSK Y-bearings, also called inserts, are mounted in pillow block or flanged housings and are widely used in mining conveyor belts. They withstand slight misalignments and simplify mounting because they come with a spherical outer ring and a shaft locking system. In idlers and tail pulleys, they withstand dirt and moisture.

To identify them, look at the engraving on the outer ring and the locking type: it may be with set screws, eccentric or adapter sleeve. The shaft diameter in inches or millimeters is key to getting it right.

A frequent mistake is ordering only the bearing without the housing, when in fact they are sold separately. We sell NSK Y-bearings and will quote you the complete assembly if you give us the shaft dimension and the distance between the housing hole centers.

NSK deep groove ball bearings are the most versatile and appear in electric motors, centrifugal pumps and fans in the mining plant. They withstand moderate radial and axial loads, and run at high speeds with low friction. In dusty environments, versions with seals or metal shields are chosen.

Codes 6010, 6011 and 6210 represent common series. To order them, write down the full number and the suffixes: 2RS indicates rubber seal on both sides, 2Z metal shield and C3 greater internal clearance. C3 clearance is chosen according to the working temperature and the fit.

Do not confuse the inner diameter: in the 60 series, the last two digits multiplied by 5 give the diameter in millimeters. We distribute NSK deep groove ball bearings and help you confirm the reference if you have the motor or pump code.

NSK spherical roller bearings are ideal for ball mills and vibrating screens, where there are heavy loads and shaft misalignment. Their design with two rows of rollers and a spherical raceway in the outer ring compensates for chassis flexing. In screens, they withstand continuous vibration and high accelerations.

Codes 23120CE4, 21320CE4 and 23130CE4 are examples of this line. The K suffix indicates a tapered bore, which is mounted on an adapter sleeve; if it does not have it, it is a cylindrical bore. Check the full engraving because the series and diameter are critical.

When quoting, mention whether the bearing works with grease or oil lubrication and the equipment rotation speed. We sell NSK spherical roller bearings and guide you in choosing the fit and internal clearance according to the application.

NSK cylindrical roller bearings are used in gearboxes and gear cases of mining equipment, where there are high radial loads and speed. They allow axial displacement between rings, which facilitates thermal expansion. Axial ball bearings, on the other hand, withstand pure axial loads in thrust systems.

You can identify them by the engraving and the dimensions. For cylindrical ones, check whether they are single-row or double-row and whether they have a brass or polyamide cage. For axial ones, verify the shaft and housing diameter.

A common mistake is mounting an axial ball bearing backwards, with the fixed raceway on the wrong side. We distribute NSK cylindrical roller and axial ball bearings; send us a photo of the part and we will quote you the correct reference.

NSK cages and needle components allow needle bearings to be repaired without changing the complete assembly. In mining, they are used in joints of mobile equipment, pumps and transmission systems. The cage keeps the rollers separated and guided, and is replaced when there is wear or breakage.

To order them, you need the inner diameter, outer diameter and width of the cage, as well as the number of rollers. If you have the original bearing, its code helps identify the cage.

Do not try to reuse a damaged cage: it causes vibration and premature failure. We sell NSK cages and needle components; we will quote you the exact replacement with the part or equipment data.