Sealmaster in agriculture: components for combine harvesters, seeders, bucket elevators and storage plants, and how to quote them

In agricultural machinery maintenance, transmission and rolling components must withstand demanding conditions: dust, vibrations, variable loads and long working days. Sealmaster bearings and housings are used in this type of work. At MR we distribute this brand and help you identify the component for your agricultural machinery.

In combine harvesters, seeders and storage equipment, fixation and sealing are very important. Generally, Y bearings are fixed to the shaft with an eccentric locking collar or set screws, which makes installation easier. In addition, the sealing helps retain grease and slow the ingress of contaminants, which is key in environments with dirt and crop residue.

When a machine is out of service in the middle of the season, every hour counts. That is why it is advisable to have the codes of critical components identified and to know who to ask for them. From Buenos Aires, Argentina, we distribute the Sealmaster brand and quote the spare parts you need for your agricultural machinery.

The Y bearing, also called an insert, is a rigid ball bearing with a spherical outer ring that fits into a housing. This geometry allows it to compensate for small misalignments between the shaft and the structure, which is very common in agricultural machines working on uneven ground. There are different series and sizes, with fixation and sealing options depending on the application.

In agriculture, these bearings appear in augers, rollers, drag chains and other mechanisms of combine harvesters and seeders. For example, the codes MH-20, MH-23 and MH-24 are Sealmaster Y bearings (inserts). When ordering them, it is advisable to verify the shaft diameter and the type of fixation, because an error in the measurement leaves the equipment stopped.

To quote a Sealmaster Y bearing, send us the code engraved on the part or the shaft and housing dimensions. If the bearing is very damaged and the code cannot be read, a photo and the dimensions are enough to identify the correct alternative. Avoid ordering only by brand and approximate diameter: inserts have seal and fixation variants that change performance.

Spherical roller bearings support radial and axial loads at the same time, and tolerate greater misalignments than other types of bearings. In agricultural machinery they are found in bucket elevator pulleys, sieve shafts and transmission systems that work inclined or with some flexion. Depending on the application, they are chosen with a cylindrical or tapered bore.

In a storage bucket elevator, for example, spherical roller bearings go on the shafts of the upper and lower pulleys, where the belt tension generates combined loads. The codes PN-204, PN-205 and PN-206 are examples of this subcategory. The shaft diameter and bearing width must always be confirmed before ordering.

A common mistake when replacing a spherical roller bearing is not respecting the internal clearance or the cage type. In applications with high speed or temperature, C3 clearance may be necessary to prevent overheating. If you have doubts about which one corresponds, write to us on WhatsApp with the code of the old bearing or the shaft dimensions, and we will indicate the appropriate option.

The Y housing with insert bearing is a ready-to-mount unit: it combines a cast iron or sheet steel housing with a Sealmaster insert already installed. It is the most practical solution when replacing the entire assembly, because it avoids the work of assembling the bearing onto the housing. In agriculture, these units are used on auger shafts, conveyor belts and cleaning mechanisms.

Y housings come in different configurations: pillow block, flange, take-up and hanger. Each one serves a function depending on how the shaft is mounted. For example, the codes TBMH-16 and SFMH-31 are Sealmaster Y housings with insert bearing. When ordering them, you must indicate the housing type and the shaft size.

When replacing a complete Y housing, check the condition of the housing and the base. If the housing is cracked or deformed, it is advisable to replace it together with the bearing to avoid premature failures. At MR we distribute Sealmaster Y housings with insert, and we quote by code or by dimensions if you do not have the exact reference.

In addition to Y housings, Sealmaster offers a variety of bearing housings that adapt to different working positions. There are pillow block, flange, take-up and hanger housings, each with a design that facilitates mounting on agricultural machine structures. Choosing the correct housing depends on the load direction and the available space.

In a combine harvester, for example, pillow block housings are used on horizontal shafts, while take-up housings go in belt or chain systems to regulate tension. The codes PN-20T, PN-12T and PN-22T are examples of Sealmaster housings. When quoting them, specify the housing type and the shaft diameter.

A frequent mistake is ordering a housing by the bearing size without verifying the type of fixation to the structure. Sealmaster housings have mounting holes with specific distances, so it is advisable to measure the base or send a photo of the old housing. This way we ensure the exact spare part and avoid adaptations that compromise alignment.

Combine harvesters concentrate a large number of bearings and housings in the header, the threshing system and the unloading augers. In those areas, it is advisable to choose inserts with good sealing against dust and straw, a common cause of failure. Y housings with insert are used on roller shafts and grain augers.

Seeders, on the other hand, work with lighter loads but with a lot of vibration and frequent starts. There, Y bearings with set screw fixation are a practical option, because they mount quickly and do not require complex adjustments. Spherical roller bearings appear on contact wheel shafts and in metering systems.

In bucket elevators and storage plants, Sealmaster bearings and housings support the weight of the belt and the grain, in addition to constant tension. Pillow block housings and spherical roller bearings are a common option in these applications. If you are about to do scheduled maintenance, make a list with the codes and quantities, and ask us for a quote on WhatsApp or email.

To quote any Sealmaster component, the fastest way is to send us the complete code that appears on the part or on the machine plate. If you do not have the code, you can send the shaft dimensions, the outer diameter and the width, along with a photo of the bearing or housing. With that information we identify the spare part and send you the quote.

At MR we distribute Sealmaster and advise you on choosing the correct component. If you have a bearing from another brand and want a Sealmaster equivalent, send us the code of the original part and the dimensions, and we will indicate the alternative. Avoid ordering only by generic description, because there are many fixation and seal variants.

Write to us on WhatsApp or by email with your inquiry. Include the code, the dimensions or a photo of the part, and tell us which machine it is mounted on. We will reply promptly with the quote and the data you need to place the order.