FAG 51211 thrust ball bearing
- Brand
- FAG
- Category
- Bearings
- Subcategory
- Thrust ball bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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Other brands in this category
Ask us about alternatives. Equivalence is verified for each reference and application.
SKF vs FAG: equivalent part numbers →NSK vs FAG: equivalent part numbers →FAG vs NTN: equivalent part numbers →FAG vs RKB: equivalent part numbers →
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How to read FAG 51211
- 512Series
- Thrust ball bearings, 512 series. For the same bore, each series has a different outside diameter and width.
- 11Bore
- 55 mm bore: 11 × 5.
51211 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The FAG 51211 bearing has a 55 mm bore, a 90 mm outside diameter and a 25 mm height (55 x 90 x 25 mm).
FAG 51211 is a reference of thrust ball bearing, within Bearings. Request a quote for 51211 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The thrust ball bearing is a single-row component that supports predominantly axial loads in one direction, with separable shaft and housing washers. It is used where the load pushes in the direction of the shaft and speeds are moderate, such as transmission columns, rotary tables and lifting mechanisms. At MR Accesorios Industriales we sell the FAG line with the complete designation so that the quote is accurate.
The designation of this family is read as a series of five digits that starts with the series number and continues with the size: the smallest steps in each series are those with the lowest final numbers. The final number indicates the size of the assembly, not a loose measurement. When the code includes suffixes, it is advisable to read them with the manufacturer's product page: they change execution details, not the concept of the product.
In Argentine industry these thrust bearings appear in presses, screw elevators, cutting tables, milling heads and materials handling equipment. They are also found in gearboxes and machine tools where the load is thrust and there is no relevant radial component. In those assemblies, the bearing works supported on flat surfaces and requires that the housing and shaft be well seated.
To select, start from the axial load that the assembly will support and the direction of that load: the single-row thrust ball bearing takes thrust in one direction. Check the permissible rotation speed, because these bearings are not designed for high speeds. During assembly, take care with the perpendicularity of the support faces and the alignment between shaft and housing; a tilted face concentrates the load on a few balls. Lubrication must reach the raceway and be renewed according to the operating regime.
Between brands, interchangeability is resolved by designation and by mounting dimensions: a thrust bearing of the same series from another manufacturer with the same code usually shares diameters and height. Still, before replacing, compare the suffix and the execution, because two bearings with the same number may differ in cage or treatment. If you have doubts, send us the original code and that of the equipment where it is mounted.
If you need a FAG thrust ball bearing for equipment in operation, send the code by WhatsApp to MR Accesorios Industriales. With the complete designation and, if possible, a photo of the assembly, we will quote you promptly and advise you on the correct variant.
Dimensions
Boundary dimensions of the basic designation 51211 per ISO 104: 55 x 90 x 25 mm (d x D x H).
- Bore
- 55mm
- Outside diameter (D)
- 90mm
- Height (H)
- 25mm
Same size in SKF and other brands
Pages from other brands with the basic designation 51211: 55 x 90 x 25 mm (d x D x H) per ISO 104.
They share the boundary dimensions set by ISO 104, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the FAG 51211 bearing?
- The FAG 51211 bearing has a 55 mm bore, a 90 mm outside diameter and a 25 mm height (55 x 90 x 25 mm). These are the standardised boundary dimensions (ISO 104) of the basic designation 51211.
- What does the 511 series mean in a thrust ball bearing?
- It is the designation of a family of single-row thrust ball bearings. The five digits start with the series number and the final number indicates the size of the assembly. For replacement, the complete code is the governing data.
- Can I replace a thrust ball bearing with one from another brand?
- Generally yes, if the designation and mounting dimensions match. Before changing it, compare the suffix and the execution, because two bearings with the same number may differ in cage or treatment. Send the original code by WhatsApp and we will verify it.
- How is a thrust ball bearing mounted?
- It is mounted with the shaft and housing washers in their seats, with the support faces perpendicular to the shaft. Lubrication must reach the raceway and the alignment between shaft and housing must be careful, because the thrust bearing does not tolerate tilting.