
NTN 5S-2LA-HSL912U angular contact ball bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Angular contact ball bearings
- Series
- 5S-2LA-HSL9U
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Description
NTN 5S-2LA-HSL912U belongs to angular contact ball bearing, 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 5S-2LA-HSL912U and any equivalents.
For machine tool spindles, metrology equipment and other setups where rotational accuracy matters, the NTN 5S-2LA-HSL9U angular contact ball bearing handles combined radial and axial loads. Its angular contact geometry supports paired mounting when high rigidity is required. MR Industrial Accessories supplies this series and quotes it using the full designation you provide.
Reading the code helps you confirm you are ordering the right variant. The 5S block tells you the balls are ceramic, which lowers weight and limits thermal growth. The 2LA block covers cage and lubrication style. HSL marks the high-speed angular contact family, while the number that follows, as in 5S-2LA-HSL910U or 5S-2LA-HSL917U, sets the size. The trailing U denotes an internal design variant.
Typical installations include milling, grinding and machining center spindles, plus metrology instruments, precision drill heads and positioning systems. Buyers in the automotive, aerospace and machine tool sectors turn to this series when a replacement has to meet tight tolerances. MR Industrial Accessories offers the NTN line for those needs.
Selection depends on how the bearings are arranged. They are mounted in pairs and preloaded to achieve the axial clearance the application calls for. Lubrication choice, grease or oil, and sealing in dirty environments both affect service life. Cleanliness and correct housing alignment during installation help avoid premature failure. Our technical team can assist if you need guidance.
Bearings from other manufacturers that share the same dimensional nomenclature can serve as replacements for NTN angular contact units. Check the principal dimensions and the contact angle, and review the load and speed conditions before substituting. If those specifications match, interchange is generally possible. Send us the original part number and we will point you to the equivalent.
To get a quote on the NTN angular contact bearing you need, message us on WhatsApp with the complete part number. We will respond promptly so you can keep your project moving.
Dimensions
- Bore
- 60 mm
Frequently asked questions
- What does the 5S-2LA-HSL9U designation mean?
- The 5S prefix indicates ceramic balls; 2LA covers the cage and lubrication; HSL is the high-speed series; the number is the size; and U is a design variant. Each block gives you information for selection.
- Is this bearing suitable for machine tool spindles?
- Yes, it is built for spindles that need high speed and precision. The angular contact design allows paired mounting with high rigidity. It is common in milling machines, grinding machines and machining centers.
- How do I request a quote for a specific size?
- Write to us on WhatsApp with the complete part number, for example 5S-2LA-HSL910U, and we will quote you shortly. If you have a part number from another brand, we can also help with the equivalent.

