Sealmaster: how to choose by application

The Y bearing, also called insert, is a ball bearing with a spherical outer ring that fits into a housing with a spherical bore. This geometry allows the assembly to self-align and compensate for shaft misalignment during mounting or operation. In the Sealmaster line, these inserts are identified with codes such as MH-31, MH-19 and MH-23.

This type of bearing is used in conveyors, fans, agricultural machinery and material handling equipment. The choice of insert depends on the shaft diameter and the predominant radial load. For example, an MH-31 has a larger bore than an MH-19, which defines its load capacity and the size of the required housing. It is always advisable to verify the actual shaft diameter with a caliper before ordering the replacement.

When quoting a Sealmaster Y bearing, it is key to indicate the complete code engraved on the ring, or at least the bore diameter in inches or millimeters. A photo of the part and the housing where it is mounted also helps. We sell Sealmaster inserts and help you identify the correct model from that data.

Sealmaster spherical roller bearings are designed to withstand very high radial loads and moderate axial loads in both directions. Their design with two rows of rollers and a spherical raceway on the outer ring allows them to absorb angular misalignment of the shaft without losing load capacity. In the Sealmaster catalog, this subcategory includes codes such as PN-206, PN-207 and PN-204.

These bearings appear in equipment such as vibrating screens, mills, pumps and gearboxes. Selection is based on the equivalent dynamic load, rotational speed and expected service life. It is important not to replace a spherical roller bearing with a rigid ball bearing in applications with misalignment, because it would fail prematurely.

To quote a Sealmaster spherical roller bearing, send the exact code if it is legible, or the main dimensions: bore, outer diameter and width. It is also advisable to inform the application and load conditions. We sell these rollers and indicate the correct alternative if the original code is erased or is from another brand.

The Y housing with insert bearing is a ready-to-mount unit that combines a cast iron or sheet steel housing with a Sealmaster insert. This solution simplifies mounting and ensures alignment between the bearing and its housing. Codes such as STMH-35, TBMH-27 and SFMH-24 correspond to this type of unit.

These units are used in belt conveyors, bucket elevators, agricultural machinery and packaging lines. The choice of housing depends on the available space, the direction of the load and the method of attachment to the structure.

When ordering a Y housing with bearing, it is advisable to indicate the complete unit code, or at least the housing type and shaft diameter. It is also useful to know whether the original housing was cast iron or stamped steel, because it changes strength and weight. We sell these Sealmaster units and quote the exact replacement with that data.

Sealmaster housings are the casings where Y bearings or spherical roller bearings are housed. They can be pillow block, flange, take-up or hanger types, and are made of cast iron, steel or thermoplastic materials. In the catalog, examples of housings are PN-22T, PN-32T and PN-39T.

The main function of the housing is to secure the bearing to the machine and transmit loads to the structure. Therefore, the choice of housing must consider mechanical strength, ease of lubrication and protection against contaminants. A bearing should never be mounted in a housing other than the specified one, because fixation and alignment are compromised.

To quote a Sealmaster housing, send the code engraved on the casing or the number of the bearing that goes inside. A photo of the installed housing also helps to identify the fixation type and style. We sell these housings and help you find the exact model for your application.

Sealmaster bearings and housings have the model code engraved on the outer ring or on the casing. That code combines letters indicating the series and numbers defining the shaft or housing size.

If the code is blurry or illegible, the bearing bore or shaft diameter can be measured with a caliper. It is also advisable to measure the outer diameter and total width of the part. With those measurements and a photo, it is possible to identify the correct model by comparing with the catalog. It is not advisable to rely only on the brand of the original equipment, because special bearings are sometimes used.

When sending the inquiry, include the complete code if you have it, or the measurements and a photo of the part. That allows us to quote the exact replacement without back-and-forth. We sell Sealmaster and work with catalog codes to give you a precise answer.

One of the most frequent mistakes is choosing a bearing only by bore diameter, without considering load and speed. A Y insert can withstand moderate radial loads, but if there are significant axial loads or misalignment, a spherical roller bearing is better. Another mistake is using a sheet steel housing instead of a cast iron one in applications with vibration or impacts, because the sheet steel deforms and loses fixation.

During mounting, it is common to over-tighten the set screws of the insert, which damages the shaft or deforms the inner ring. It is also common to forget initial lubrication or use a grease incompatible with the bearing seals. In pillow block housings, check that the lubrication hole is accessible and that the housing is well aligned with the shaft before securing it.

To avoid these problems, follow the manufacturer's instructions and use the appropriate tools. If you have doubts about which Sealmaster model corresponds, consult us with the code or measurements. We guide you in the selection and quote the correct replacement.

To quote a Sealmaster bearing or housing, send via WhatsApp or email the exact code on the part, or the main dimensions: bore, outer diameter and width. A photo of the part and the place where it is mounted also helps. With that data, we respond promptly with the correct alternative from the Sealmaster catalog.

If the original code is from another brand, we can look for the Sealmaster equivalent. For that, we need the complete code and confirmation measurements. You do not need to dismount the part before consulting: with a photo and the shaft diameter we can proceed.

Write to us via WhatsApp or email and tell us what equipment you are repairing. We sell Sealmaster in Buenos Aires, Argentina, and help you choose the model according to load, speed, environment and mounting type.