McMaster-Carr logo
    Filter by
    System of Measurement
    Shaft Diameter
    Attribute Image
    Bearing Seal Type
    Ball Bearing Profile
    Shaft Type
    For Housing ID
    Attribute Image
    Bearing Trade Number
    Industrial Info Snippet
    Attribute Image
    For Load Direction
    Shaft Mount Type
    Inner Ring Type
    Dynamic Radial Load Capacity
    Bearing Type
    ABEC Rating
    Flange OD
    Attribute Image
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    19 Products

    Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Ball Bearings, Open.

    Open

    Smoother than smooth—the balls inside these bearings roll nearly friction-free. You’ll often find them on rapidly rotating parts, from the whirring chuck on a power drill to the spinning shaft on an electric motor.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
    Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.
    Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
    Highly-Corrosion-Resistant 316 Stainless Steel—The most corrosion-resistant metal bearings we offer. They won't pit or weaken from salt water or harsh chemicals, such as bleach and chlorine found in cleaning solutions.
    ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Bearing
    Trade No.
    Each
    Open
     
    Steel
    3/16"1/2"5/32"129060,000-65275StandardR3
    		00000000000000
     
    Corrosion-Resistant 440C Stainless Steel
    3/16"1/2"5/32"123053,000-40240StandardR3
    		00000000000
    3/16"1/2"5/32"529050,000-10240StandardR3
    		0000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    3/16"1/2"5/32"Not Rated653,100-40140StandardR3
    		000000000000
     

    Permanently Lubricated Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Permanently Lubricated Ball Bearings.
    Install and forget these self-lubricating bearings. Their lubricant is a solid material that fills the space between the balls and releases oil over time, so you'll never need to add more.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
    Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.
    Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
    ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Bearing
    Trade No.
    Each
    Open
     
    Steel
    3/16"1/2"5/32"129037,50010200StandardR3
    		0000000000000
     
    Corrosion-Resistant 440C Stainless Steel
    3/16"1/2"5/32"111037,500-10200StandardR3
    		00000000000
     

    Dry-Running Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Dry-Running Ball Bearings.
    Made of naturally slippery plastic so there's no lubricant to maintain or make a mess. These bearings are ideal for spic-and-span spaces since oil won't drip off, wash out, or collect dust over time. They won't rust or warp from moisture, so they stand up to thorough cleanings.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, reducing wear and extending the life of the bearing.
    Acetal—The most common choice for plastic bearings, acetal is economical yet still stands up to daily wear and tear.
    Chemical-Resistant PVDF—A step up from acetal, PVDF won't corrode when exposed to most strong acids and solvents.
    High-Temperature Chemical-Resistant PEEK—The most heat- and chemical-resistant plastic bearings we offer. Even inside autoclaves as hot as 330° F, PEEK won't melt. It also won't degrade when exposed to harsh acids and bases.
    316 Stainless Steel Balls—Won't corrode from salt water or harsh chemicals, such as bleach and chlorine found in cleaning solutions.
    Glass Balls—Nonmagnetic, so they won't interfere with sensors and other sensitive electronics.
    Temp.
    Range, ° F
    316 Stainless
    Steel Balls
    Glass Balls
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    ABEC
    Rating
    Bearing
    Trade No.
    Each
    Each
    Open
     
    Acetal
    3/16"1/2"5/32"153,100-40180Not RatedR3
    		00000000000000000000000
     
    Chemical-Resistant PVDF
    3/16"1/2"5/32"153,100-40180Not RatedR3
    		000000000000———0
     
    High-Temperature Chemical-Resistant PEEK
    3/16"1/2"5/32"203,800-40330Not RatedR3
    		000000000000———0
     

    Flanged Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Flanged Ball Bearings, Open.

    Open

    Install these bearings inside a housing and they won't budge. The flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
    Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
    ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.
    Flange
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    OD
    Thk.
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Bearing
    Trade No.
    Each
    Open
     
    Corrosion-Resistant 440C Stainless Steel
    3/16"1/2"5/32"0.565"0.04"529050,000-20250StandardR3
    		00000000000000
     

    Dry-Running Flanged Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Dry-Running Flanged Ball Bearings, Open.

    Open

    Don't risk your bearing popping out of place or making a mess. The flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock these bearings off-kilter. Made of naturally slippery plastic, there's no lubricant to maintain. No lubricant means no oil that could drip off, wash out, or collect dust, so they're ideal for spic-and-span spaces. They stand up to thorough cleanings since they won't rust or warp from moisture.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, reducing wear and extending the life of the bearing.
    Acetal—The most common choice for plastic bearings, acetal is economical yet still stands up to daily wear and tear.
    316 Stainless Steel Balls—Won't corrode from salt water or harsh chemicals, such as bleach and chlorine found in cleaning solutions.
    Flange
    Temp.
    Range, ° F
    316 Stainless
    Steel Balls
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    OD
    Thk.
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    ABEC
    Rating
    Bearing
    Trade No.
    Each
    Open
     
    Acetal
    3/16"1/2"5/32"0.56"0.04"153,100-40180Not RatedR3
    		0000000000000
     

    High-Precision Flanged Ball Bearings

    Image of Product. Front orientation. Ball Bearings. High-Precision Flanged Ball Bearings, Open.

    Open

    Our most precise flanged ball bearings, with tolerances tighter than a speck of dust. Rated ABEC 7 out of 9, they meet strict tolerance standards established by the Annular Bearing Engineers Committee (ABEC). Choose them for high-speed equipment that requires pinpoint accuracy, such as gyroscopes. Their flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
    Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
    Flange
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    OD
    Thk.
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Bearing
    Trade No.
    Each
    Open
     
    Corrosion-Resistant 440C Stainless Steel
    3/16"1/2"0.196"0.565"0.04"723045,000-10240StandardR3
    		0000000000000
     

    High-Precision Ball Bearings

    Image of Product. Front orientation. Ball Bearings. High-Precision Ball Bearings, Open.

    Open

    The most precise bearings we offer, with tolerances tighter than a speck of dust. Rated ABEC 7 out of 9, they meet strict tolerance standards established by the Annular Bearing Engineers Committee (ABEC). You'll find them in equipment that requires both high speed and pinpoint accuracy, such as gyroscopes.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
    Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Bearing
    Trade No.
    Each
    Open
     
    Corrosion-Resistant 440C Stainless Steel
    3/16"1/2"5/32"723045,000-10240StandardR3
    		0000000000000
     

    Ball Bearings for Food and Beverage

    Image of Product. Front orientation. Ball Bearings. Ball Bearings for Food and Beverage, Open.

    Open

    Food production rolls along smoothly on these bearings. Greased with FDA-compliant lubricant, they’re safe to install on food-processing equipment, such as conveyor belts, so long as they don’t directly touch the food. The lubricant is a solid material that fills the space between the balls and releases oil over time, so you'll never need to add more.
    Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
    Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
    ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Food Industry Std.
    Bearing
    Trade No.
    Each
    Open
     
    Corrosion-Resistant 440C Stainless Steel
    3/16"1/2"5/32"125037,500-20210StandardFDA Compliant 21 CFR 178.3570R3
    		000000000000
     

    Shims for Ball Bearing Outer Rings

    Image of Product. Front orientation. CrossSection, ZoomedIn view. Contains Annotated. Shims. Round, For Ball Bearing Outer Rings, Sold Individually.
    Boost bearing efficiency and lifespan. Often used on motor shafts, these shims evenly distribute the load between multiple bearings by creating space between their outer rings. This prevents excessive pressure on any single bearing, maintaining proper alignment for smooth operation and reduced wear.
    You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    Highly-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
    For
    Bearing
    Trade
    No.
    ID
    OD
    ID
    ID
    Tolerance
    OD
    OD Tolerance
    Min.
    Hardness
    Choose a Thickness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    R3, R188
    		3/16", 1/4"1/2"0.378"0" to 0.005"0.498"-0.005" to 0"Rockwell B70
    0.003"
    ,
    0.005"
    ,
    0.007"
    ,
    0.01"
    ,
    0.02"
    		25000000000000000
     
    Highly-Corrosion-Resistant 316 Stainless Steel
    R3, R188
    		3/16", 1/4"1/2"0.378"0" to 0.005"0.498"-0.005" to 0"Rockwell B90
    0.005"
    ,
    0.007"
    ,
    0.01"
    ,
    0.02"
    		1000000000000000
     
    Brass
    R3, R188
    		3/16", 1/4"1/2"0.378"0" to 0.005"0.498"-0.005" to 0"Rockwell B70
    0.003"
    ,
    0.005"
    ,
    0.007"
    ,
    0.01"
    ,
    0.02"
    		100000000000000
     

    Shims for Ball Bearing Housings

    Image of System. Front orientation. Exploded view. Contains MultipleImages. Shims. Sold Individually, For Ball Bearing Housings, Round.
    No need for keys, pins, or messy adhesives. These shims fit around the outer ring of your bearings for a secure hold in stamped, molded, or worn housings. All have ridges that press against the housing like a spring to keep the bearings in place. The ridges also dampen vibration for smooth operation, adjust for temperature fluctuations to maintain their grip, and compensate for up to 0.5° of misalignment. These shims are also known as tolerance rings.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    For
    Bearing
    Trade
    No.
    OD
    Wd.
    Static Radial
    Load Cap., lb.
    For Bearing Housing
    Bore Dia.
    Thk.
    Corrugation
    Ht.
    Misalignment
    Capability
    Min.
    Hardness
    Each
    18-8 Stainless Steel
    R3
    		1/2"0.196"1800.555" to 0.558"0.008" to 0.02"0.03" to 0.05"0.5°Rockwell C400000000000000
     
    back to top