NTN in agriculture: components for combine harvesters, seeders, norias and storage plants

NTN tapered rollers support combined radial and axial loads, something very common in the wheel hubs of combine harvesters and tractors. Their cone and cup design allows adjusting internal clearance during assembly. In agriculture they also appear in gearboxes and differentials. To order them, it is best to have the code engraved on the cup or cone, such as 32920, 32924 or 32926.

When removing a tapered bearing, check whether the cup remained inside the hub and whether there are signs of wear on the raceways. A frequent mistake is replacing only the cone and leaving the old cup, which shortens the life of the assembly. The tightening torque of the hub nut must also be respected. If you are unsure about the clearance, it is better to consult the equipment manual.

To quote an NTN tapered bearing, send us the full code and, if possible, the inner diameter, outer diameter and width measurements. If the bearing is very damaged and the code cannot be read, a photo of the part and of the mounting location helps identify it. At MR we quote the exact replacement or the corresponding alternative.

NTN angular contact bearings are used when there are axial loads in one direction or combined with high speeds. In agriculture they are typical of hydraulic pumps, electric motors in storage plants and combine harvester heads. Their design allows them to be mounted in pairs, face-to-face or in tandem, to support loads in both directions.

When ordering an angular contact bearing, check whether the code indicates the contact angle and arrangement. For example, 7010, 7011 or 7210 are common references. A common mistake is installing an angular contact bearing backwards, which generates vibration and premature failure. The orientation indicated by the equipment manufacturer must always be respected.

To quote them, send the NTN code and the quantity. If the bearing works in a paired assembly, clarify it because it may require a specific clearance. It also helps to know whether it has seals or is open. With that data we will send you the quote shortly.

NTN Y bearings, also called inserts, come with a spherical outer ring and an extended inner ring with set screws or an eccentric locking collar. They are mounted in pillow block or flange housings and are widely used in norias, augers, conveyor belts and screens in storage plants. Their advantage is quick mounting and removal, without the need for complex adjustments.

When identifying a Y bearing, the code identifies the series and the shaft diameter, as in 3AC09 or AR210. It is key to know the shaft diameter and the locking type: with set screws, eccentric or adapter sleeve. A common mistake is overtightening the screws and damaging the inner ring.

To quote an NTN insert, send us the full code and the shaft diameter. If you do not have the code, measure the inner diameter and tell us which equipment it is mounted on. At MR we help you choose the compatible housing.

NTN cylindrical rollers support very high radial loads and allow axial displacement between rings, depending on the design. In agriculture they appear in reducer gearboxes of hammer mills, mixers, extruders and in large motors in storage plants. They are easy to remove because the rings are separable.

When ordering a cylindrical roller, pay attention to the cage type and the flange arrangement. For example, NU416, NU317 or NU218 are codes from the NU series, which has two flanges on the outer ring and none on the inner ring. A common mistake is confusing the NU, NJ, NUP or N series, which have different flanges and functions.

To quote them, send the NTN code and the measurements if you have them. If the bearing works with axial load, clarify it because you may need a design with flanges. At MR we guide you with the correct reference according to the application.

NTN spherical rollers have two rows of rollers and a spherical outer ring, which allows them to absorb shaft misalignment. In agriculture they are used in round balers, mills, crushers and equipment with long shafts or structures that work outdoors. They support high radial loads and moderate axial loads in both directions.

When identifying a spherical roller bearing, the code usually starts with 213, 222, 223, etc. For example, 21317, 21318 or 21319 are references from the 213 series. A frequent mistake is mounting them in a housing that does not allow self-alignment, cancelling their advantage. It must also be verified whether the bore is cylindrical or tapered, depending on the mounting.

To quote an NTN spherical roller bearing, send the full code and the bore type. If it is mounted on an adapter sleeve, indicate the sleeve number. With that data we will send you the quote shortly.

NTN cam and support rollers are bearings with a thick outer ring that rolls on a track or cam. In agriculture they are used in seeding mechanisms, metering units, guidance systems and conveyor systems. They support high radial loads and, depending on the design, axial loads.

When ordering a cam roller, it is key to know the outer diameter, the width and the mounting type: with a through shaft, with a stud or with a flange. A common mistake is confusing the cam roller with a deep groove ball bearing of similar dimensions. The code engraved on the outer raceway must always be verified.

To quote them, send the NTN code or the exact measurements. If the roller works on a cam with external lubrication, clarify it to choose the appropriate seal. At MR we help you identify the correct reference.

NTN needle bearings are used when there is little radial space and high loads need to be supported. In agriculture they appear in universal joints, gearboxes, pumps and crank-rocker mechanisms. Cages and needle components allow custom bearings to be assembled or only the cage to be replaced.

When identifying a needle bearing, check whether it has machined rings, a cage with loose needles, or whether it is a cage alone. A frequent mistake is measuring only the inner diameter and forgetting the total width or the cage type. The condition of the raceways on the shaft and in the housing must also be checked.

To quote NTN needles or cages, send the full code or the inner diameter, outer diameter and width measurements. If it is a loose cage, indicate the number of needles and their diameter. At MR we quote the exact component or the corresponding alternative.