McMaster-Carr logo
    Filter by
    System of Measurement
    OD
    Attribute Image
    Bearing Type
    Industrial Info Compare
    Bearing Seal Type
    Bearing Construction
    Dynamic Radial Load Capacity
    For Housing ID
    Attribute Image
    Cage Material
    Width
    Plain Bearing Type
    Ball Bearing Profile
    Static Thrust Load Capacity
    Inner Ring Type
    Dynamic Thrust Load Capacity
    ABEC Rating
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    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)
    40 Products

    Four-Point Angular Contact Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Four-Point Angular Contact Ball Bearings.
    Support complex movement in multiple directions with a single compact bearing. The balls distribute weight at four points, so these bearings handle radial, thrust, and moment loads all at once. For example, you’ll often find them in robot arms, which rotate, extend, and twist while supporting an object’s weight. Thinner than two standard angular contact ball bearings paired together, these bearings squeeze into tight spaces. They’re commonly paired with large hollow shafts to run electrical wire and other lines.
    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.
    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.
    Dynamic
    Load Cap.
    Temp.
    Range, ° F
    For Shaft
    Dia.
    For Housing
    ID
    Wd.
    ABEC
    Rating
    Radial,
    lb.
    Thrust,
    lb.
    Moment,
    ft·lbf
    Max. Rotation
    Speed, rpm
    Contact
    Angle
    Min.
    Max.
    Inner Ring
    Type
    Each
    Open
     
    Steel
    3 1/2"4"1/4"1F7001,1008070030°-60250Standard6656K140000000
     

    Ultra-Low-Friction Oil-Embedded Thrust Bearings

    Image of Product. Front orientation. Thrust Bearings. Ultra-Low-Friction Oil-Embedded Thrust Bearings.
    Our slipperiest metal thrust bearings glide on machines with frequent starts and stops, such as conveyors. Their oil contains nonstick PTFE particles that reduce wear and heat, extending the life of your equipment. All are fabricated, lubricated, and inspected in the U.S.
    High-Load 863 Iron Copper—Iron makes these bearings harder, stronger, and more resistant to sudden starts and stops than 841 bearing bronze. However, they run at slower speeds. The increased iron content also makes them appear silver.
    Synthetic Oil Base—A high-quality lubricant makes all the difference. Synthetic oil is less sensitive to temperature changes than mineral oil, so it won't get runny and leak away if the bearing heats up.
    For Shaft
    Dia.
    OD
    Thk.
    Dynamic Thrust Load
    Cap. @ Speed
    Base Oil
    Lubricant
    Additive
    Temp. Range,
    ° F
    Each
    High-Load 863 Iron Copper
    2"4"1/8"10,000 lb. @ 30 rpmSynthetic OilPTFE
    		-60 to 3007380N167000000
    2 1/4"4"1/8"10,400 lb. @ 30 rpmSynthetic OilPTFE
    		-60 to 3007380N16800000
    3"4"1/8"6,000 lb. @ 30 rpmSynthetic OilPTFE
    		-60 to 3007380N17200000
     

    Oil-Embedded Thrust Bearings

    Image of Product. Front orientation. Thrust Bearings. Oil-Embedded Thrust Bearings.
    Our simplest-to-use thrust bearings, with no moving parts and no need to lubricate. Their porous surface releases oil over time, so you can install and forget them. While they run in most conditions, oil may drip away if temperatures climb too high. For extremely hot environments, consider graphite-lubricated bearings. All are fabricated, lubricated, and inspected in the U.S.
    841 Bearing Bronze—A balance of strength and speed makes these bearings a good choice for most applications. Also known as SAE 841 bearing bronze.
    Synthetic Oil Base—A high-quality lubricant makes all the difference. Synthetic oil is less sensitive to temperature changes than mineral oil, so it won't get runny and leak away if the bearing heats up.
    For Shaft
    Dia.
    OD
    Thk.
    Dynamic Thrust Load
    Cap. @ Speed
    Base Oil
    Temp. Range,
    ° F
    Each
    841 Bearing Bronze
    2"4"1/8"15,000 lb. @ 30 rpmSynthetic Oil-35 to 3005906K587000000
    2"4"1/4"15,000 lb. @ 30 rpmSynthetic Oil-35 to 3005906K58800000
    2 1/16"4"1/8"14,200 lb. @ 30 rpmSynthetic Oil-35 to 3005906K61900000
    2 1/8"4"1/8"14,000 lb. @ 30 rpmSynthetic Oil-35 to 3005906K6200000
     

    Thrust Bearings

    Image of Product. Front orientation. Thrust Bearings. Thrust Bearings.
    With no moving parts, these bearings are the plainest way to support thrust loads while reducing friction. They don't come with lubricant, so you can choose the oil that's best for your application. Make sure to mount them where they're easy to access, since you'll need to replenish the oil frequently. All are fabricated and inspected in the U.S.
    High-Load 932 Bearing Bronze—Cast from an alloy of leaded tin bronze for uniform rigidity and strength. Also known as 660 leaded bronze.
    For Shaft
    Dia.
    OD
    Thk.
    Dynamic Thrust
    Load Cap. @ Speed
    Temp. Range,
    ° F
    Each
    High-Load 932 Bearing Bronze
    2"4"1/8"Not Rated-350 to 4507814K444000000
    2"4"1/4"Not Rated-350 to 4507814K44500000
     

    Clear Scratch- and UV-Resistant Acrylic Round Tubes

    Image of Product. Front orientation. Plastic. Clear Scratch- and UV-Resistant Acrylic Round Tubes.
    When compared to cast acrylic tubes, these extruded acrylic tubes offer nearly the same performance at a fraction of the cost. Use them for sight gauges and protective covers. This scratch- and UV-resistant material stands up to outdoor use better than polycarbonate and maintains clarity over time.
    OD
    ID
    Lg.,
    ft.
    Fabrication
    Min. Temp.,
    ° F
    Max. Temp.,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Color
    Flammability
    Rating
    Each
    Standard Tolerance
     
    1/8" Thick Wall
    4"3 3/4"6Extruded-401809,195 to 11,0300.04ClearUL 94 HB
    		8532K51000000
     

    Multipurpose 932 Bearing Bronze Round Tubes

    Image of Product. Front orientation. Bronze. Multipurpose 932 Bearing Bronze Round Tubes.
    Balancing strength, corrosion resistance, and machinability, 932 is everything you want in a bearing bronze. It's most commonly made into thrust bearings and bushings. Also known as SAE 660.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    OD
    ID
    Temper
    Designation
    Specs.
    Met
    3"
    Long
    6 1/2"
    Long
    13"
    Long
    1/4" Thick Wall
    4"3 1/2"M07ASTM B5058911K33800000000000000000000
     
    1/2" Thick Wall
    4"3"M07ASTM B5058911K368000000000000000000
     
    3/4" Thick Wall
    4"2 1/2"M07ASTM B5058911K389000000000000000000
     
    1" Thick Wall
    4"2"M07ASTM B5058911K398000000000000000000
     

    Clamping Acme Lead Screw Collars

    Image of Product. Front orientation. Lead Screw Collars. Clamping Acme Lead Screw Collars.
    Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.
    To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
    Black-Oxide 12L14 Carbon Steel—Black-oxide carbon steel collars have mild corrosion resistance.
    Thread
    Size
    OD
    Wd.
    No. of Thread
    Starts
    Hardness
    Each
    Right-Hand Thread
     
    Black-Oxide 12L14 Carbon Steel
    2 1/2"-3
    		4"1"1Brinell 1636698K260000000
     

    Highly Wear-Resistant Machinable Cast Nylon Round Tubes

    Image of Product. Front orientation. Plastic. Highly Wear-Resistant Machinable Cast Nylon Round Tubes.
    The addition of MDS gives these tubes exceptional wear resistance along with a self-lubricating surface. They're made of cast nylon 6, making them easier to machine and better electrical insulators than other MDS-filled nylon tubes. Tubes can be used to fabricate pulleys, bushings, and bearings installed in hard-to-reach areas where adding a lubricant would be difficult. This material is comparable to Nylatron and Nycast.
    Oversized Tolerance—Oversized tubes have an oversized OD and an undersized ID for finishing to the sizes listed.
    OD
    ID
    Lg.,
    ft.
    Fabrication
    Min.
    Temp.
    Max. Temp.,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Color
    Each
    Oversized Tolerance
     
    1/2" Thick Wall
    4"3"1CastNot Rated23010,0001.4Black4363N133000000
    4"3"2CastNot Rated23010,0001.4Black4363N134000000
     
    1" Thick Wall
    4"2"1CastNot Rated23010,0001.4Black4363N16800000
    4"2"2CastNot Rated23010,0001.4Black4363N169000000
     

    Finish-Your-Own Shims

    Image of Product. Front orientation. Shims. Round, Finish-Your-Own, Sold Individually.
    Punch a hole in these shims to create a custom ID for uncommon shaft, arbor, and fastener sizes. With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.
    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.
    Carbon Steel—Best for dry environments since moisture will cause these shims to rust.
    Material Certificate—Shims include a report with a traceable lot number.
    Thk.
    Thk. Tolerance
    Min.
    Hardness
    Specs.
    Met
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    4" OD
    0.001"-0.00008" to 0.00008"Rockwell C40ASTM A666Material Certificate
    		52895T37000000
    0.002"-0.0001" to 0.0001"Rockwell C40ASTM A666Material Certificate
    		52895T4500000
    0.01"-0.0005" to 0.0005"Rockwell C40ASTM A666Material Certificate
    		52895T6700000
     
    Carbon Steel
     
    4" OD
    0.001"-0.0002" to 0.0002"Rockwell B90ASTM A109Material Certificate
    		52904T3700000
    0.002"-0.0002" to 0.0002"Rockwell B90ASTM A109Material Certificate
    		52904T6500000
    0.01"-0.00075" to 0.00075"Rockwell B90ASTM A109Material Certificate
    		52904T7700000
     

    Wide-Rim Shims

    Image of Product. Front orientation. Shims. Round, Wide Rim, Sold Individually.
    Spread loads across a wider surface area than standard shims to minimize costly wear between components. With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.
    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.
    Carbon Steel—Best for dry environments since moisture will cause these shims to rust.
    Zinc-Plated Carbon Steel—A common choice for areas with occasional exposure to moisture.
    Thk.
    Thk. Tolerance
    ID Tolerance
    OD Tolerance
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    Carbon Steel
     
    3" ID × 4" OD
    0.187"-0.017" to 0.003"0.01" to 0.025"-0.01" to 0.01"Not Rated197063A58500000
     
    Zinc-Plated Carbon Steel
     
    3" ID × 4" OD
    0.187"-0.017" to 0.003"0.01" to 0.025"-0.01" to 0.01"Rockwell B38197669A5360000
     

    Highly Machinable 936 Bearing Bronze Round Tubes

    Image of Product. Front orientation. Bronze. Highly Machinable 936 Bearing Bronze Round Tubes.
    With almost twice as much lead, 936 bearing bronze machines more easily than 932. It's often made into bearings and bushings for oil pumps and gasoline engines. Also known as modified SAE 64.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    OD
    ID
    Temper
    Designation
    Specs.
    Met
    6"
    Long
    13"
    Long
    1/2" Thick Wall
    4"3"M07ASTM B5058918K13900000000000000
     
    3/4" Thick Wall
    4"2 1/2"M07ASTM B5058918K154000000000000
     
    1" Thick Wall
    4"2"M07ASTM B5058918K158000000000000
     

    High-Temperature Cast Nylon Round Tubes

    Image of Product. Front orientation. Plastic. High-Temperature Cast Nylon Round Tubes.
    A good choice for making sprockets and pulleys, these cast nylon 6 tubes withstand higher temperatures and are easier to machine than standard nylon 6/6 tubes. This material is comparable to Nylatron and Nycast.
    Oversized Tolerance—Oversized tubes have an oversized OD and an undersized ID for finishing to the sizes listed.
    1 ft. Long
    2 ft. Long
    OD
    ID
    Fabrication
    Max. Temp.,
    ° F
    Tensile Strength,
    psi
    Impact Strength,
    ft·lbf/in
    Color
    Each
    Each
    Oversized Tolerance
     
    1/2" Thick Wall
    4"3"Cast25010,000 to 13,5001 to 2.5Blue8413N1810000008413N1820000000
     
    1" Thick Wall
    4"2"Cast25010,000 to 13,5001 to 2.5Blue8413N291000008413N292000000
     

    Oil-Embedded 841 Bearing Bronze Round Tubes

    Image of Product. Front orientation. Bronze. Oil-Embedded 841 Bearing Bronze Round Tubes.
    With a porous surface that releases oil over time, this bronze lubricates itself. Turn it into parts that you can't easily access to relubricate, such as bearings, well pumps, and turbine blades. The oil may burn away if temperatures climb too high, however. For extreme heat up to 700° F, consider graphite-embedded bearing bronze instead.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    OD
    ID
    Temper
    Designation
    Specs.
    Met
    3"
    Long
    6 1/2"
    Long
    1/2" Thick Wall
    4"3"Not RatedASTM B4388931K44100000000000000
     
    3/4" Thick Wall
    4"2 1/2"Not RatedASTM B4388931K531000000000000
     
    1" Thick Wall
    4"2"Not RatedASTM B4388931K571000000000000
     

    Corrosion-Resistant 954 Bearing Bronze Round Tubes

    Image of Product. Front orientation. Bronze. Corrosion-Resistant 954 Bearing Bronze Round Tubes.
    One of the most corrosion-resistant bearing bronze alloys, 954 withstands everything from sea water to sulfuric acid. It's often turned into bearings and valve bodies for demanding environments such as salt mines. Also known as aluminum bronze. If you need similar corrosion resistance with even greater strength, consider 955 bearing bronze instead.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    OD
    ID
    Temper
    Designation
    Specs.
    Met
    6 1/2"
    Long
    13"
    Long
    1/2" Thick Wall
    4"3"M07ASTM B5058916K8900000000000000
     
    1" Thick Wall
    4"2"M07ASTM B5058916K105000000000000
     
    back to top