FAG BSB4090-2Z-SU-XL super precision bearing
- Brand
- FAG
- Category
- Bearings
- Subcategory
- Special bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
FAG BSB4090-2Z-SU-XL is a reference of super precision bearing, within Bearings. Request a quote for BSB4090-2Z-SU-XL via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
FAG super precision bearings from the BSB series are components designed for high-speed and precision requirements. They are used in machine tool spindles, grinding heads and other systems where rotational accuracy is critical. MR Accesorios Industriales supplies this line as a brand, backed in the Argentine industrial market.
The BSB series designation is read in parts: the letters BSB identify the family of super precision bearings for spindles. The numbers that follow, as in BSB1547-2Z-SU-XL or BSB4090-2Z-SU-XL, indicate dimensions and design variants. The 2Z suffix indicates metal sealing on both sides; SU refers to a special clearance or preload execution, and XL to the manufacturer's technical improvements. Knowing these codes helps you order the exact replacement.
In Argentine industry, these bearings are used in milling machine, grinding machine and machining center spindles, where speed and precision are decisive. They also appear in precision drill heads and measuring equipment. Their ability to withstand combined loads and rotate at high speeds makes them suitable for demanding machining processes.
To select the correct bearing, take into account the type of load, the operating speed and the lubrication system. The 2Z sealing protects against contaminants and retains the lubricant, but in very high-speed applications an open execution may be preferred. Mounting requires extreme cleanliness, precise alignment and adequate preload according to the spindle. Grease or oil lubrication must follow the manufacturer's recommendations.
FAG super precision bearings can be interchanged with equivalent products from other brands, provided that dimensions, tolerances and execution type match. Diameter alone is not enough: internal clearance, sealing and precision class must be verified. At MR Accesorios Industriales we can guide you if you send us the complete part number or the housing dimensions.
If you need a bearing from the BSB series, write to us on WhatsApp with the part number or model you are looking for. At MR Accesorios Industriales we will reply shortly with availability and the corresponding quote.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm the dimensions and version against the manufacturer's data sheet.
Frequently Asked Questions
- What does the 2Z suffix mean in BSB bearings?
- The 2Z suffix indicates that the bearing has metal seals on both sides. These seals protect against the entry of contaminants and help retain the lubricant, although they are not leak-tight like rubber seals.
- How do I choose between a BSB bearing and a conventional one?
- BSB bearings are super precision, intended for spindles and high-speed applications with accuracy requirements. If your equipment requires low vibration and high rigidity, this series is the right one. Contact us with your machine's part number.
- Can I replace a BSB with another brand?
- Yes, if dimensions, tolerances, internal clearance and sealing type match. Outer and inner diameter alone are not enough. Send us the dimensions and the original part number so we can verify the equivalence before quoting.