NTN BSTU40100LLXD2 thrust ball bearing de contacto angular
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Thrust ball bearings
- Series
- BSTU LLX D2
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Description
NTN BSTU40100LLXD2 belongs to thrust ball bearing de contacto angular, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for BSTU40100LLXD2 and any equivalents.
The NTN BSTU LLX D2 is a thrust ball bearing built to take axial loads in one direction. Its angular contact layout and sealed design suit arrangements where space is tight and axial rigidity matters, such as machine tool spindles, rotary tables and measuring equipment.
Reading the code helps you specify the right part. BSTU marks the angular contact thrust ball bearing series. The digits in the middle give the bore and outside diameter. LLX shows the sealing arrangement: a labyrinth with a low-friction seal. D2 identifies a design variant, usually tied to preload or internal clearance. So BSTU2068LLXD2 has a 20 mm bore and a 68 mm outside diameter, and BSTU40100LLXD2 has a 40 mm bore and a 100 mm outside diameter.
These bearings show up in precision work: spindles on milling machines, grinding machines and machining centers, rotary tables on inspection equipment, and angular positioning systems. Because they handle axial load in a single direction, they fit setups that call for rigidity and accuracy, like drill heads or shafts that transmit fine movements.
When you select a size, check the direction of the axial load, the preload level you need, and the operating environment. The LLX seal keeps contamination out and lubricant in, so confirm it works with the lubricant you plan to use. At mounting, align the shaft and housing carefully to avoid extra stresses. Use the specified lubricant and set internal clearance to suit the application.
Bearings of this type from other makers can often be swapped in when the main dimensions and tolerances line up. Sealing and preload designations differ from brand to brand, though, so check dimensional and functional compatibility before you replace a part. If you have another maker's code, send it over and we can help you find the matching NTN reference.
To get a quote, send the complete code by WhatsApp or email. We will confirm the exact reference and can suggest equivalents or help you choose if you are unsure. For a specific variant in the BSTU LLX D2 series, include the model and we will quote it.
Dimensions
- Bore
- 40 mm
Frequently asked questions
- What does the BSTU LLX D2 designation mean?
- BSTU is the series of angular contact thrust ball bearings. LLX denotes the labyrinth seal with low-friction seal, and D2 is a design variant, generally linked to preload. The numbers in between indicate dimensions such as bore and outside diameter.
- Where is this bearing typically used?
- It suits machine tool spindles, precision rotary tables, measuring equipment and positioning systems that must carry axial loads with high rigidity. It is also found in drill heads and transmission shafts where accuracy is critical.
- How do I request a quote for a specific size?
- Send the full bearing code by WhatsApp or email, for example BSTU3080LLXD2, or give us the bore and outside dimensions you need. We will quote the exact reference.