Product page
Self-aligning ball bearing NTN 2312SK
- Manufacturer Part Number
- 2312SK
- Brand
- NTNOfficial distributor
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
![]()
We respond promptly.
Request your quote via WhatsApp or email, with the quantity and time frame 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
NTN 2312SK is a self-aligning ball bearing reference, within Bearings. Request a quote for 2312SK via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The NTN SK series self-aligning ball bearing is a self-aligning bearing with two rows of balls, designed to carry radial loads and compensate for angular misalignment between shaft and housing. Its spherical outer raceway allows the inner ring to oscillate, absorbing mounting errors or shaft deflection. It is used in equipment where perfect alignment is not guaranteed, such as fans, pumps, conveyors and agricultural machinery. MR Accesorios Industriales sells the NTN SK series in Buenos Aires, Argentina, with more than 80 years of experience in bearings and power transmission.
The SK series designation is read simply: the basic number indicates the size and load capacity, and the SK suffix indicates that the bearing has a tapered bore with 1:12 taper. For example, 1204SK, 1205SK and 1206SK share the SK suffix, which allows it to be mounted directly on tapered shafts or with adapter sleeves. The higher the basic number, the larger the bore diameter and load capacity. This nomenclature makes it easy to quickly identify the series and its application.
In Argentine industry, SK series self-aligning bearings are found in industrial fans, centrifugal pumps, belt conveyors, vibrating screens and agricultural equipment. Their self-aligning capability makes them suitable for long shafts subject to deflection or for assemblies where the housing is not perfectly machined. They are also used in textile machines, industrial washing equipment and process equipment where alignment conditions vary. MR Accesorios Industriales sells them for replacement and new projects throughout the country.
To select an SK bearing, take into account the radial and axial load, the rotation speed and the type of sealing required. The tapered bore with 1:12 taper requires mounting on a tapered shaft or with an adapter sleeve; check the tightening torque and concentricity. Lubrication can be with grease or oil depending on the application, and the internal clearance is adjusted during mounting. Initial alignment is less critical thanks to the self-aligning capability, but it is advisable to check that the misalignment angle does not exceed the permissible limits. For dusty or humid environments, choose variants with seals or protective covers.
NTN SK series self-aligning bearings are interchangeable with those of other brands that follow the same dimensional nomenclature and the SK suffix. When replacing, compare the main dimensions, the bore type and the internal clearance. If the original part number corresponds to another brand, MR can tell you the compatible equivalent. Interchangeability between manufacturers is not always direct: check tolerances and original lubrication. For accurate identification, send the part number or the dimensions of the bearing you need to replace.
If you are looking for an NTN SK series self-aligning ball bearing, write to us on WhatsApp with the part number or the shaft and housing dimensions. At MR Accesorios Industriales we quote the exact reference and advise you on mounting and lubrication. We handle inquiries from all over the country and ship promptly. We can also help you identify the part if you do not have the part number at hand. Request a quote for your SK bearing with us and ensure your equipment keeps running.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What does the SK suffix mean on a self-aligning bearing?
- The SK suffix indicates that the bearing has a tapered bore with 1:12 taper. This allows it to be mounted on a tapered shaft or by means of an adapter sleeve, which makes it easier to adjust the internal clearance and secure it on the shaft.
- How do I choose the right SK bearing for my application?
- Consider the radial and axial load, the speed, the shaft diameter and the environmental conditions. The tapered bore requires a compatible shaft or sleeve. For dusty or humid environments, choose variants with seals. At MR we advise you according to your equipment.
- Are NTN SK series bearings interchangeable with other brands?
- Yes, they are interchangeable with bearings from other brands that share the same dimensional nomenclature and the SK suffix. When replacing, check dimensions, bore type and internal clearance. If you have the part number from another brand, we can tell you the equivalent.

