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Plain Bearings

On Machrio, the plain bearings category is also carrying oil seal intent, so the page needs to explicitly help buyers compare radial shaft seals by size, lip geometry, compound, and operating environment. Buyers searching oil seals are rarely browsing casually; they want to cross-check fit and failure risk quickly.

Procurement Guide

How Buyers Should Source Plain Bearings

On Machrio, the plain bearings category is also carrying oil seal intent, so the page needs to explicitly help buyers compare radial shaft seals by size, lip geometry, compound, and operating environment. Buyers searching oil seals are rarely browsing casually; they want to cross-check fit and failure risk quickly.

What to Compare

  • Start with shaft diameter, housing bore, width, and whether the application is oil retention, dust exclusion, or both.
  • Compare single-lip, dual-lip, and spring-loaded designs based on contamination risk, shaft finish, and direction of sealing duty.
  • Match the elastomer to temperature, lubricant, speed, and chemical exposure instead of assuming NBR, FKM, and PU are interchangeable.

Common Applications

  • Motors, pumps, gearboxes, reducers, and rotating process equipment
  • Maintenance replacement for leaking or contaminated shaft-seal positions
  • Procurement workflows where cross-reference fit and material confirmation matter before order

RFQ Checklist

  • Record shaft diameter, housing bore, seal width, and rotation or pressure conditions.
  • Confirm lip design, spring requirement, and elastomer compatibility with lubricant and temperature.
  • Check whether dust exclusion, washdown, or abrasive contamination is part of the service environment.
Request a QuoteTalk to Sourcing

Use RFQ when you need cross-SKU comparison, bulk pricing, or application support.

666 products

Steel Angular Contact Ball Bearing 1.77in Bore 3.94in OD for Industrial Use
Industrial|SKU: CN5983
Steel Angular Contact Ball Bearing 1.77in Bore 3.94in OD for Industrial Use

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise axial and radial load support. Featuring a 1.77-inch bore diameter and a 3.94-inch outside diameter, the unit measures 0.98 inches in width to fit compact assembly configurations. Constructed from durable hardened steel, it ensures exceptional rigidity and extended service life under demanding operational conditions. The optimized internal geometry facilitates efficient load distribution, making it ideal for machinery spindles, pumps, and gearboxes where reliability and minimal maintenance are critical performance factors.

$89.99In Stock
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Steel Angular Contact Ball Bearing 1.97in Bore 3.54in OD, Pkg Qty 10
Industrial|SKU: FQ9915
Steel Angular Contact Ball Bearing 1.97in Bore 3.54in OD, Pkg Qty 10

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise radial and axial load management. Featuring a 1.97-inch bore diameter, 3.54-inch outside diameter, and 0.79-inch width, it delivers exceptional rigidity and rotational accuracy. Constructed from durable hardened steel, the unit supports demanding operational environments while maintaining tight P5 precision tolerances. Ideal for machinery spindles and gearboxes, this component ensures reliable performance under combined loading conditions. Supplied in packages of ten, these bearings offer a cost-effective solution for maintenance inventories and original equipment manufacturing requirements.

$189.99In Stock
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Steel Angular Contact Ball Bearing 2.36in Bore 5.12in OD, Pkg Qty 2
Industrial|SKU: FQ9975
Steel Angular Contact Ball Bearing 2.36in Bore 5.12in OD, Pkg Qty 2

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise axial and radial load management. Featuring a 2.36-inch bore diameter and a 5.12-inch outside diameter, the unit measures 1.22 inches in width to fit standard machinery housings. Constructed from durable hardened steel, it ensures exceptional rigidity and thermal stability under demanding operational conditions. The design supports combined loads effectively, making it ideal for pump, compressor, and motor assemblies where reliability and extended service life are critical performance metrics.

$49.99In Stock
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Steel Angular Contact Ball Bearing 2.56in Bore 5.51in OD, Pkg Qty 2
Industrial|SKU: FQ9977
Steel Angular Contact Ball Bearing 2.56in Bore 5.51in OD, Pkg Qty 2

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise radial and axial load management. Featuring a 2.56-inch bore diameter and a 5.51-inch outside diameter, the unit measures 1.30 inches in width to fit standard machinery configurations. Constructed from durable hardened steel, it ensures exceptional wear resistance and operational stability under demanding conditions. The design supports combined loading scenarios, making it ideal for pumps, compressors, and gearboxes where reliability and dimensional accuracy are critical for maintaining system efficiency and minimizing downtime.

$59.99In Stock
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Steel Angular Contact Ball Bearing 2.76in Bore 5.91in OD, Pkg Qty 2
Industrial|SKU: CN7258
Steel Angular Contact Ball Bearing 2.76in Bore 5.91in OD, Pkg Qty 2

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise axial and radial load support. Featuring a 2.76-inch bore diameter and a 5.91-inch outside diameter, the unit measures 1.38 inches in width to fit standard housing configurations. Constructed from durable hardened steel, it ensures exceptional rigidity and thermal stability under demanding operational conditions. The design accommodates significant combined loads while maintaining tight rotational accuracy, making it ideal for machine tool spindles, pumps, and heavy-duty gearboxes where reliability and extended service life are critical.

$79.99In Stock
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Steel Angular Contact Ball Bearing 3.15in Bore 4.92in OD 0.87in Length
Industrial|SKU: VJ5306
Steel Angular Contact Ball Bearing 3.15in Bore 4.92in OD 0.87in Length

This high-precision steel angular contact ball bearing set is engineered for demanding industrial applications requiring rigid axial and radial load support. Featuring a 3.15-inch bore, 4.92-inch outside diameter, and 0.87-inch width, the assembly utilizes premium-grade steel construction to ensure exceptional durability under high-speed rotation. Manufactured to P5 tolerance standards, these bearings deliver superior rotational accuracy and minimized vibration for critical machinery. The optimized internal geometry supports combined loads efficiently, making this three-unit set ideal for precision spindles, gearboxes, and pump systems operating in rigorous environments.

$59.99In Stock
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Steel Angular Contact Ball Bearing 3.15in Bore 6.69in OD for Industrial, Pkg Qty 2
Industrial|SKU: FQ9982
Steel Angular Contact Ball Bearing 3.15in Bore 6.69in OD for Industrial, Pkg Qty 2

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise radial and axial load management. Featuring a 3.15-inch bore diameter and a 6.69-inch outside diameter, the unit measures 1.54 inches in width to fit standard machinery housings. Constructed from durable hardened steel, it ensures exceptional rigidity and thermal stability under demanding operating conditions. The single-row design supports combined loads efficiently, making it ideal for pumps, compressors, and gearboxes where reliability and extended service life are critical operational requirements.

$99.99In Stock
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Steel Angular Contact Ball Bearing 3.54in Bore 7.48in OD for Industrial Use
Industrial|SKU: FQ9986
Steel Angular Contact Ball Bearing 3.54in Bore 7.48in OD for Industrial Use

This steel angular contact ball bearing is engineered for high-load industrial applications requiring precise axial and radial support. Featuring a 3.54-inch bore diameter and a 7.48-inch outside diameter, the unit measures 1.69 inches in width to fit standard heavy-duty assemblies. Constructed from durable hardened steel, it ensures exceptional rigidity and resistance to deformation under significant stress. The design accommodates combined loads effectively, making it ideal for machinery operating at high speeds where reliability and extended service life are critical operational requirements.

$69.99In Stock
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Steel Angular Contact Ball Bearing 4.72in Bore 8.46in OD 1.57in Length
Industrial|SKU: NQ0120
Steel Angular Contact Ball Bearing 4.72in Bore 8.46in OD 1.57in Length

This steel angular contact ball bearing is engineered for high-speed industrial applications requiring precise axial and radial load management. Featuring a 4.72-inch bore diameter and an 8.46-inch outside diameter, the unit measures 1.57 inches in width to fit standard heavy-duty shaft assemblies. Constructed from durable hardened steel, it ensures exceptional rigidity and thermal stability under demanding operating conditions. The single-row design supports combined loads effectively, making it ideal for machine tool spindles, pumps, and gearboxes where reliability and dimensional accuracy are critical for sustained operational efficiency.

$79.99In Stock
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Steel Ball Bearing 0.20 in Bore 0.63 in OD for Machinery, Pkg Qty 100
Industrial|SKU: JR9679
Steel Ball Bearing 0.20 in Bore 0.63 in OD for Machinery, Pkg Qty 100

Engineered for high-speed machinery, this miniature steel ball bearing delivers precise rotational support with minimal friction. Featuring a 0.20-inch bore and 0.63-inch outside diameter, the unit maintains a compact 0.20-inch width suitable for space-constrained assemblies. Constructed from durable steel, it ensures reliable performance under demanding operational loads while resisting wear. Ideal for industrial equipment requiring consistent accuracy, this component offers long service life in critical applications. Sold in packages of 100 to streamline inventory management and reduce procurement overhead for large-scale manufacturing requirements.

$119.99In Stock
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Steel Ball Bearing 0.24in Bore 0.47in OD 0.16in Length, Pkg Qty 100
Industrial|SKU: JR9552
Steel Ball Bearing 0.24in Bore 0.47in OD 0.16in Length, Pkg Qty 100

Engineered for precision applications, these miniature steel ball bearings feature a 0.24-inch bore and 0.47-inch outside diameter with a compact 0.16-inch width. Constructed from durable steel, the double-shielded design effectively retains lubrication while excluding contaminants to ensure reliable operation in high-speed environments. Ideal for compact machinery and instrumentation, this solution delivers low-friction performance and extended service life under demanding loads. Supplied in packages of 100 units, these components provide a cost-effective inventory solution for maintenance teams requiring consistent dimensional accuracy and structural integrity.

$129.99In Stock
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Steel Ball Bearing 0.24in Bore 0.59in OD 0.20in L Industrial, Pkg Qty 100
Industrial|SKU: JR4965
Steel Ball Bearing 0.24in Bore 0.59in OD 0.20in L Industrial, Pkg Qty 100

This industrial-grade steel ball bearing is engineered for high-speed precision applications requiring compact dimensions. Featuring a 0.24-inch bore diameter and a 0.59-inch outside diameter, the unit maintains a slim 0.20-inch width to fit space-constrained assemblies. Constructed from durable steel with double metal shields, it effectively retains lubrication while excluding contaminants in demanding environments. The C3 internal clearance specification accommodates thermal expansion and minor misalignment, ensuring reliable rotational performance. Supplied in bulk industrial packaging, these bearings are optimized for efficient integration into light machinery and electric motor systems.

$109.99In Stock
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Steel Ball Bearing 0.2 in Bore 0.55 in OD Industrial, Pkg Qty 25
Industrial|SKU: JR1969
Steel Ball Bearing 0.2 in Bore 0.55 in OD Industrial, Pkg Qty 25

Designed for precision industrial applications, this steel ball bearing features a 0.2-inch bore and 0.55-inch outside diameter with a compact 0.2-inch width. Constructed from high-grade steel, it delivers exceptional load capacity and rotational stability in demanding environments. The double-shielded design effectively retains lubrication while excluding contaminants, ensuring extended service life and reduced maintenance intervals. Engineered to tight tolerances, this component provides reliable performance for high-speed machinery where space constraints require miniature dimensions without compromising structural integrity or operational efficiency.

$99.99In Stock
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Steel Ball Bearing 0.31 in Bore 0.55 in OD for Industrial Use, Pkg Qty 36
Industrial|SKU: JR6606
Steel Ball Bearing 0.31 in Bore 0.55 in OD for Industrial Use, Pkg Qty 36

Engineered for precision industrial applications, this steel ball bearing features a 0.31-inch bore diameter and a 0.55-inch outside diameter with a compact 0.16-inch width. Constructed from high-grade steel, the unit delivers exceptional durability and load capacity in demanding environments. The double-shielded design effectively retains lubrication while excluding contaminants to ensure extended service life and reduced maintenance intervals. Supplied in bulk industrial packaging with a quantity of 36 units per package, these bearings provide a reliable, cost-effective solution for high-volume manufacturing and machinery assembly requirements.

$99.99In Stock
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Steel Ball Bearing 0.31 in Bore 0.75 in OD for Industrial Use, Pkg Qty 50
Industrial|SKU: JR4977
Steel Ball Bearing 0.31 in Bore 0.75 in OD for Industrial Use, Pkg Qty 50

Engineered for precision industrial applications, this steel ball bearing features a 0.31-inch bore and a 0.75-inch outside diameter with a compact 0.24-inch width. Constructed from high-grade steel, the unit incorporates double metal shields to effectively retain lubrication while excluding contaminants in demanding environments. The C3 internal clearance specification accommodates thermal expansion and minor misalignment, ensuring reliable operation at elevated speeds and temperatures. Supplied in bulk industrial packaging, these bearings provide consistent performance and extended service life for light-duty machinery and motor assemblies requiring robust rotational support.

$109.99In Stock
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Steel Ball Bearing 0.35 in Bore 1.02 in OD 0.31 in L Industrial, Pkg Qty 100
Industrial|SKU: JR3634
Steel Ball Bearing 0.35 in Bore 1.02 in OD 0.31 in L Industrial, Pkg Qty 100

Designed for high-speed industrial applications, this precision steel ball bearing features a 0.35-inch bore diameter and a 1.02-inch outside diameter with a compact 0.31-inch width. Constructed from durable steel, the unit incorporates double metal shields to effectively retain lubrication while excluding contaminants, ensuring reliable operation in demanding environments. The MC3 internal clearance specification accommodates thermal expansion and minor misalignment, optimizing performance under variable load conditions. Supplied in bulk industrial packaging, these bearings provide a cost-effective solution for machinery requiring consistent rotational accuracy and extended service life without frequent maintenance intervals.

$139.99In Stock
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Steel Ball Bearing 0.35in Bore 1.02in OD for Machinery, Pkg Qty 100
Industrial|SKU: FN9197
Steel Ball Bearing 0.35in Bore 1.02in OD for Machinery, Pkg Qty 100

Designed for high-speed industrial machinery, this steel ball bearing delivers reliable rotational support with minimal friction. Featuring a precise 0.35-inch bore and 1.02-inch outside diameter, the unit measures 0.31 inches in width to fit compact assemblies. Constructed from durable steel, it offers superior load capacity and resistance to wear in demanding environments. The double-shielded design effectively retains lubrication while excluding contaminants, ensuring extended service life and reduced maintenance intervals. Sold in packages of 100, these bearings provide a cost-effective solution for bulk equipment manufacturing and replacement programs.

$69.99In Stock
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Steel Deep Groove Ball Bearing 0.118 in Bore 0.394 in OD, Pkg Qty 100
Industrial|SKU: AA3708159
Steel Deep Groove Ball Bearing 0.118 in Bore 0.394 in OD, Pkg Qty 100

This steel deep groove ball bearing is engineered for high-speed rotational applications requiring minimal maintenance. Featuring a 0.118-inch bore diameter and a 0.394-inch outside diameter, the unit measures 0.157 inches in width to fit compact assemblies. Constructed from durable steel, it offers superior load capacity and resistance to deformation under stress. The integrated dual rubber seals effectively retain lubrication while excluding contaminants, ensuring extended operational life in demanding industrial environments. Sold in packages of 100, these bearings provide a reliable, cost-effective solution for precision machinery and motor assemblies.

$119.99In Stock
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Steel Deep Groove Ball Bearing 0.16in Bore 0.51in OD 0.20in L, Pkg Qty 100
Industrial|SKU: QK0818
Steel Deep Groove Ball Bearing 0.16in Bore 0.51in OD 0.20in L, Pkg Qty 100

Engineered for precision rotational applications, this steel deep groove ball bearing features a 0.16-inch bore diameter and a 0.51-inch outside diameter with a compact 0.20-inch width. The double metal shield design effectively retains lubrication while excluding contaminants, ensuring reliable performance in demanding industrial environments. Constructed from high-grade steel, these units offer superior load capacity and durability for high-speed operations. Supplied in bulk packaging of 100 pieces, this component provides a cost-effective solution for machinery maintenance and assembly lines requiring consistent dimensional accuracy and long service life.

$69.99In Stock
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Steel Deep Groove Ball Bearing 0.197 in Bore 0.512 in OD, Pkg Qty 100
Industrial|SKU: AA5177868
Steel Deep Groove Ball Bearing 0.197 in Bore 0.512 in OD, Pkg Qty 100

This steel deep groove ball bearing is engineered for high-speed rotational applications requiring precise radial load support. Featuring a 0.197-inch bore diameter and a 0.512-inch outside diameter, the unit measures 0.157 inches in width to fit compact assembly envelopes. Constructed from durable hardened steel, it ensures reliable performance under demanding operational conditions while minimizing friction. Ideal for industrial machinery and electric motor assemblies, this component delivers consistent longevity and structural integrity. Supplied in bulk packaging of 100 units, it streamlines procurement and inventory management for large-scale manufacturing requirements.

$89.99In Stock
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Steel Deep Groove Ball Bearing 0.197in Bore 0.512in OD, Pkg Qty 100
Industrial|SKU: AA5075487
Steel Deep Groove Ball Bearing 0.197in Bore 0.512in OD, Pkg Qty 100

Engineered for precision industrial applications, this steel deep groove ball bearing delivers reliable rotational support with minimal friction. Featuring a 0.197-inch bore diameter and a 0.512-inch outside diameter, the unit maintains a compact 0.157-inch width suitable for space-constrained assemblies. Constructed from durable steel, these bearings offer high load capacity and resistance to wear in demanding environments. The double-shielded design effectively retains lubrication while excluding contaminants, ensuring extended service life and consistent performance across high-speed operations without requiring frequent maintenance intervals.

$149.99In Stock
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Steel Deep Groove Ball Bearing 0.197 in Bore 0.630 in OD, Pkg Qty 12
Industrial|SKU: AA8365
Steel Deep Groove Ball Bearing 0.197 in Bore 0.630 in OD, Pkg Qty 12

Engineered for precision industrial applications, this steel deep groove ball bearing features a 0.197-inch bore and a 0.630-inch outside diameter to ensure accurate shaft alignment. Constructed from durable high-grade steel, the unit offers exceptional load capacity and resistance to wear in demanding environments. The integrated dual rubber seals provide effective contamination protection while retaining lubrication, extending service life and reducing maintenance intervals. With a compact width of 0.197 inches, this component delivers reliable rotational performance within space-constrained mechanical assemblies.

$79.99In Stock
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Steel Deep Groove Ball Bearing 0.197 in Bore 0.630 in OD, Pkg Qty 12
Industrial|SKU: AA8366
Steel Deep Groove Ball Bearing 0.197 in Bore 0.630 in OD, Pkg Qty 12

This steel deep groove ball bearing is engineered for high-speed rotational applications requiring minimal maintenance. Featuring a precise 0.197-inch bore and 0.630-inch outside diameter, it ensures accurate shaft alignment and consistent performance under moderate radial and axial loads. The double metal shield design effectively retains lubrication while excluding contaminants, extending service life in demanding industrial environments. Constructed from durable hardened steel, this component offers superior wear resistance and dimensional stability. Sold in packages of 12, these bearings provide a reliable solution for electric motors, gearboxes, and general machinery assemblies.

$79.99In Stock
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Steel Deep Groove Ball Bearing 0.236 in Bore 0.748 in OD, Pkg Qty 100
Industrial|SKU: FQ0612
Steel Deep Groove Ball Bearing 0.236 in Bore 0.748 in OD, Pkg Qty 100

Engineered for high-speed rotational applications, this steel deep groove ball bearing features a 0.236-inch bore and a 0.748-inch outside diameter to ensure precise shaft alignment. Constructed from durable carbon steel, the unit offers exceptional load capacity and resistance to deformation under stress. The integrated dual rubber seals provide effective contamination protection while retaining lubrication, extending service life in demanding industrial environments. With a compact width of 0.236 inches, this component delivers reliable performance for electric motors, gearboxes, and conveyor systems requiring minimal maintenance and consistent operational efficiency.

$59.99In Stock
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Frequently Asked Questions

Common questions about Plain Bearings

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