12 best self aligning ball bearings

Self-aligning ball bearings are a type of ball bearing used in various industrial applications to accommodate angular misalignment between shafts and housings. These bearings are designed to handle both radial and axial loads and are particularly useful in applications where shaft deflection or misalignment is expected. Here are some key characteristics and information about self-aligning ball bearings:

Design and Structure: Self-aligning ball bearings consist of two rows of balls, an outer ring with a spherical raceway, and an inner ring with two raceways that are inclined relative to the bearing axis.This design allows the bearing to self-align and accommodate misalignment between the shaft and housing.
Angular Misalignment: These bearings are capable of handling angular misalignment, which can occur due to shaft deflection, mounting errors, or thermal expansion. The self-aligning feature helps reduce stress on the bearing and extends its service life.
Radial Load Capacity: Self-aligning ball bearings primarily support radial loads, making them suitable for applications where radial forces are predominant. They can also handle some axial load, but axial load capacity is lower compared to deep groove ball bearings.
Double-Row Design: Self-aligning ball bearings have two rows of balls, which distribute the load more evenly and provide greater load-carrying capacity compared to single-row ball bearings.
Cage Design: These bearings may have different types of cages, such as steel, brass, or polyamide, depending on the application's requirements. The cage retains the balls and maintains proper spacing between them.
High-Speed Capability: Self-aligning ball bearings are often suitable for high-speed applications due to their design and reduced friction.
Lubrication: Proper lubrication is essential for the performance and longevity of self-aligning ball bearings. Lubricants help reduce friction, dissipate heat, and prevent premature wear.
Applications: Self-aligning ball bearings are commonly used in various industries, including mining, construction, paper mills, and agricultural machinery. They are especially valuable in applications where misalignment is frequent or where the shaft and housing are not perfectly aligned.
Maintenance: Regular inspection and maintenance are important to ensure the continued performance of self-aligning ball bearings. This includes checking for proper alignment, adequate lubrication, and monitoring for signs of wear or damage.

In summary, self-aligning ball bearings are versatile components used in industrial machinery and equipment to accommodate angular misalignment and distribute radial loads. Their ability to self-align makes them valuable in applications where precise alignment is challenging or where shafts may experience deflection or movement. Proper maintenance and lubrication are essential to ensure their long-term reliability.

Below you can find our editor's choice of the best self aligning ball bearings on the market

Boston Gear LHSSE6 Self-Aligning Ball Bearing, Spherical, Precision, 0.375" Bore, Stainless Steel

Boston Gear

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Product description

Self-aligning, self-lubricating bearing for applications using linkages for accommodating misalignment under heavy radial or thrust loads
Heat-treated SAE 52100 steel-plated balls for resistance to corrosion and wear
410 stainless steel housing for resistance to corrosion
Self-lubricating PTFE liner and lubrication groove on OD for durability and efficiency
Maximum static radial load of 8,250 lbs

uxcell 1200 Self Aligning Bearing 10x30x9mm Ball Bearings 5pcs

uxcell

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Product description

Description:

-Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring.

-Self Aligning Ball Bearing has a spherical outer ring raceway, the balls and cage continue to rotate.

-This type of bearings is suitable when the displacement of the centers around which the shaft and housing rotate and shaft deflection are likely to occur.

Specification:

Bearing No.: 1200

Material: Chrome Steel

Inner Diameter: 10mm

Outer Diameter: 30mm

Width: 9mm

Dynamic Load Ratings: 5.5kN

Static Load Ratings: 1.2kN

1200 (I.D.: 10mm, O.D.: 30mm, Width: 9mm)
Dual row self aligning bearing for accommodate static and dynamic misalignment
Self-aligning ball bearings generate less friction than any other type of rolling bearing
Very loose conformity between balls and outer ring keeps friction and frictional heat at low levels
Self-aligning ball bearings can reduce noise and vibration levels, for example, in fans

ATN 1205 25mm x 52mm x 15mm Self Aligning Ball Bearing Double Row

Yodaoke

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Product description

ATN 1205 Self Aligning Ball Bearing Double Row 25mm x 52mm x 15mm

NTN Bearing 1208 Double Row Self-Aligning Radial Ball Bearing, Normal Clearance, Standard Cage, 40 mm Bore ID, 80 mm OD, 18 mm Width, Open

NTN Bearing

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Product description

Double row self-aligning bearings utilize an inner ring with two rows of balls in two deep raceways, and an outer ring with a single spherical raceway. In this way, the inner and outer rings can be misaligned relative to each other. The resulting effect is a comparatively large angle imposing moment loads upon the balls. The boundary dimensions of the 1200 and 1300 series are the same as the 6200 and 6300 single row deep groove bearings.

NTN is one of the three largest bearing companies in the world with more than ninety years of manufacturing expertise in ball bearings.

WJB 2200-2RS-FG Self Aligning Ball Bearing, ABEC-1, Double Sealed, Steel, Metric, 10mm Bore Diameter, 30mm Outer Diameter, 14mm Width, 360 lbs Static Load Capacity, 1640 lbs Dynamic Load Capacity

WJB

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Product description

Self-aligning bearing for applications subject to shaft deflections or misalignments between the shaft and housing
Straight bore for fitting on a conventional cylindrical shaft
Rubber seal on both sides of the bearing keeps lubricant in and contaminants out
Steel cage evenly spaces balls for reduced friction, vibration, and noise
Normal radial internal clearance for applications where thermal expansion is not a factor

PGN - UCP208-24 Pillow Block Mounted Ball Bearing 1-1/2" Bore Self Aligning Cast (4 PCS)

Based on 16 reviews Check latest price

ISO 9001:2008 CERTIFICATE
Solid Cast Iron Housing
Chrome Steel (AISI 52100) Ball Bearing for higher resistance and durability
Self Aligning Feature
Our high-quality bearing is made to reduce your replacement frequency and maintenance cost

PGN - UCP205-16 Pillow Block Mounted Ball Bearing - 1" Bore - Solid Cast Iron Base - Self Aligning (2 Pack)

PGN

Based on 197 reviews Check latest price

ISO 9001:2008 CERTIFICATE
Solid Cast Iron Housing
Chrome Steel (AISI 52100) Ball Bearing for higher resistance and durability
Self Aligning Feature
Our high-quality bearing is made to reduce your replacement frequency and maintenance cost

User questions & answers

Question:	Does it have set screws
Answer:	Nope, it doesn't include screws
Question:	Does it have eccentric or set screw to lock the shaft in the bearing bore
Answer:	Yes the bearing sticks out on one side and there is a set screw

NTN Bearing 2206 Double Row Self-Aligning Radial Ball Bearing, Normal Clearance, Standard Cage, 30 mm Bore ID, 62 mm OD, 20 mm Width, Open

NTN Bearing

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Product description

NTN is one of the three largest bearing companies in the world with more than ninety years of manufacturing expertise in ball bearings.

Big Bearing 2203-2RS Self Aligning Ball Bearing, 2 Rubber Seals, 17 mm Bore, 40 mm Outside Diameter, 16 mm Width, Metal/Rubber

Big Bearing

Based on 1 reviews Check latest price

Product description

The 2203-2RS 17mm self aligning ball bearing that is found in many applications. The 2203-2RS ball bearing has two contact rubber seals one on each side of the ball bearing. This 17mm inch ball bearing is high quality and can take electric motor demands if needed.

PGN - UCP210-32 Pillow Block Mounted Ball Bearing 2" Bore Self Aligning (4 Pack)

PGN

Based on 1 reviews Check latest price

ISO 9001:2008 CERTIFICATE
Solid Cast Iron Housing
Chrome Steel (AISI 52100) Ball Bearing for higher resistance and durability
Self Aligning Feature
Our high-quality bearing is made to reduce your replacement frequency and maintenance cost

PGN - UCP208-24 Pillow Block Mounted Ball Bearing 1-1/2" Bore Self Aligning Cast (2 PCS)

Based on 13 reviews Check latest price

ISO 9001:2008 CERTIFICATE
Solid Cast Iron Housing
Chrome Steel (AISI 52100) Ball Bearing for higher resistance and durability
Self Aligning Feature
Our high-quality bearing is made to reduce your replacement frequency and maintenance cost

User questions & answers

Question:	Is the bearing flange drilled and tapped for setscrew
Answer:	Yes, and it actually came with a set screw. These are very well made and heavy duty. Don't forget to grease. and Yes, the grease nipple was installed.
Question:	How much weight can these support? If I use two and an appropriate shaft would they support the weight of a 10’ telephone pole
Answer:	Not sure of the manufactured spec'd weight rating ...but I pull a 300 + lb cultipacker with them.
Question:	Is this price for two pillowblocks
Answer:	Good afternoon, The pricing is as shown for (2) pieces.