Sealmaster in mining: what is used in crushers, mills, screens and conveyor belts

Sealmaster Y-bearings (inserts) are a common option in mining equipment where mounting and dismounting must be quick and easy. They are installed in pillow block, take-up or flange housings, and allow absorbing small shaft misalignments thanks to their spherical seat design. In crushers and conveyor belts, these inserts are used in pulleys, rollers and secondary shafts. They are a common solution in dusty and humid environments.

To identify a Sealmaster insert, look at the engraving on the outer ring or on the seal. Among the inserts we quote are MH-20, MH-23 and MH-24. If you cannot find the code, measure the inner diameter, outer diameter and total width. With that data we help you find the exact replacement.

When ordering an insert, it is advisable to send a photo of the part and the housing where it is mounted. A common mistake is confusing the type of shaft fixing: some use set screws, others eccentric or adapter sleeve. If the bearing works in a screen or feeder, it is important to indicate it, because it may require greater internal clearance or a special seal for vibration.

Sealmaster spherical roller bearings are designed to withstand very high radial loads and some angular misalignment. In mining, they appear at the ends of mill shafts, in jaw crushers and in large conveyor drums. Their self-aligning capability reduces the risk of failure when structures deform or settle with use. This makes them a frequent choice in equipment working under severe conditions.

Sealmaster spherical roller bearings are identified with codes such as PN-204, PN-205 and PN-206. To order them, besides the code, it is advisable to verify whether the bearing has an adapter sleeve or is mounted directly on the shaft.

A key point when replacing a spherical roller bearing in mining is to check the condition of the housing and shaft. If there is wear or marks, the new bearing may fail prematurely. Attention must also be paid to lubrication: in highly contaminated environments, it is recommended to use grease with extreme pressure additives. Send the code or measurements and we will quote the replacement.

Sealmaster Y-housings with insert bearing combine a cast iron or sheet steel housing with an insert of the same brand. They are widely used in conveyor belts, screens and feeders, where quick mounting and good protection against contamination are needed. These assemblies come ready to install and reduce plant downtime. In addition, they allow replacing only the insert when the housing is in good condition.

In mining, the most common Y-housings are pillow block and take-up types. Among the assemblies we quote are TBMH-16, SFMH-31 and SFMH-32, in different sizes and housing types.

When ordering a Y-housing with insert, it is important to indicate whether you need the complete assembly or only the insert. It is also advisable to clarify the type of shaft fixing and the orientation of the grease nipple, if it has one. In screens, housings often suffer constant vibration, so it is recommended to check the tightening of the fixing screws at each scheduled stop. Send us a photo of the current housing and we will quote the replacement.

Sealmaster housings are designed to accommodate insert bearings or spherical roller bearings. In mining, they are used in crushers, mills, conveyors and screens, where loads are high and the environment is aggressive. Pillow block, take-up and flange housings are the most common, and are chosen according to the shaft arrangement and the load to be supported.

Among the Sealmaster housings we quote are PN-20T, PN-12T and PN-22T. To order a housing, you need to know the code of the bearing it will accommodate, or at least the bore diameter and the center distance between the fixing holes. With that data, we quote the corresponding housing.

A frequent mistake when replacing a housing in mining is not verifying alignment with the rest of the equipment. If the housing is misaligned, the bearing works under stress and wears quickly. It is also necessary to check that the support base is flat and clean. If you have doubts about which housing goes with your bearing, send the insert code or measurements and we will advise you.

To order a Sealmaster spare part, the first step is to identify the code engraved on the part. On inserts, the code is usually on the seal or on the outer ring. On spherical roller bearings, it is on the side face. On housings, the code may be on the base or on the body. If the code is blurred or unreadable, measure the main dimensions: inner diameter, outer diameter and width. With those measurements, we can search for the equivalent.

The simplest is to order the same code that the part has. If you want to evaluate another variant for your application, tell us the working conditions and we will look at it together.

Another useful piece of information is the brand and model of the equipment where the bearing is mounted. With that information, we can search the manuals and confirm the correct spare part. It is also important to know whether the bearing works on a vertical or horizontal shaft, and whether it is exposed to water or chemicals. The more information you give us, the faster we will quote the exact spare part.

One of the most common mistakes is mounting the bearing with direct blows on the rings or seals. This damages the raceway and reduces service life. Force should always be applied to the ring that is fixed: if mounted on the shaft, push the inner ring; if mounted in the housing, the outer ring. In Sealmaster inserts, a sleeve or press mounting can be used, but never hit the seal.

Another frequent mistake is not cleaning the shaft and housing well before mounting. The presence of burrs, rust or particles can cause misalignment and premature failures. It is also necessary to verify that the shaft is within the recommended tolerance. A worn or marked shaft can cause the bearing to spin on the shaft and become damaged. In that case, the shaft must be repaired or an adapter sleeve used.

Inadequate lubrication is another cause of failures in mining. Using too little grease, or a grease not suitable for high loads or contamination, shortens bearing life. It is recommended to follow the manufacturer's lubrication plan and use greases with extreme pressure additives. In environments with a lot of water, special seals or bearings with seals can be chosen. If you have doubts, consult us before mounting.

To quote a Sealmaster spare part, write to us via WhatsApp or email with the bearing or housing code, or with the measurements if you do not have the code. You can also send a photo of the part and the equipment. With that data, we quote the spare part. We supply Sealmaster bearings and housings: inserts, spherical roller bearings and housings.

If you are not sure of the code, do not worry: with the brand and model of the equipment, or with the dimensions, we can identify the spare part. We can also advise you on the type of seal, internal clearance or fixing system most suitable for your application.

If you need several spare parts for a plant shutdown, we prepare a complete quote. Send your inquiry today and we will respond promptly with the quote.