NTN 2A-BST40X90 thrust ball bearing de contacto angular
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Thrust ball bearings
- Series
- 2A-BST
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Description
NTN 2A-BST40X90 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 2A-BST40X90 and any equivalents.
The NTN 2A-BST series is an angular contact thrust ball bearing built to carry axial loads in a single direction. Its single-row ball arrangement and hardened steel rings suit assemblies that call for axial rigidity and running precision, such as machine tool spindles, rotary tables and measuring equipment.
Reading the designation helps you match the bearing to the application. The 2A prefix denotes a design variant with particular angular contact behavior, while BST marks the precision thrust ball series. The figures that follow, as in 2A-BST17X47 or 2A-BST40X90, relate to bore and outer diameter, though both are not always given. This makes size and configuration easy to identify during selection.
Typical installations include main spindles of machine tools, milling heads, grinding machines and machining centers, plus rotary tables on measuring equipment, automotive test devices and robotics that require controlled movement. Because the bearing takes axial load in one direction, it fits arrangements where the force acts mainly that way.
When choosing a 2A-BST bearing, review the axial load, the rotational speed and the lubrication conditions. Mounting calls for accurate alignment between the rings and the housing, since the bearing is sensitive to misalignment. Grease or oil may be used depending on the application; check axial clearance after installation. In contaminated surroundings, add extra protection.
Similar designations from other manufacturers may exist, but dimensions and load capacities can differ, so verify the technical data before substituting one bearing for another. If you have a code from another brand or an unidentified part, the team can point you to a compatible option or quote the exact code you need.
To request a quote for an NTN 2A-BST series thrust ball bearing, send the part number or dimensions through WhatsApp or email. The team replies promptly and can help confirm the right choice for your application.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- Where are NTN 2A-BST thrust ball bearings used?
- They are common in machine tool spindles, rotary tables, measuring equipment, robotics and automotive testing devices, where axial loads and rotational precision are required.
- How do I select the correct 2A-BST bearing?
- Consider the axial load, speed, lubrication and alignment. Mounting requires precision and a check of axial clearance. In contaminated environments, additional protection is recommended.
- Can NTN 2A-BST bearings be replaced by other brands?
- Equivalents may exist, but dimensions and capacities can vary. If you have another brand's code or an unidentified part, we can indicate a compatible alternative or quote the exact code.