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    46 Products
    About Ball Bearings
    industrial info icon

    Select bearings by load direction, seal type, capacity, and speed ratings to limit wear and keep your equipment running.

    Ball Bearings

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

    Shielded

    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.
    Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.
    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., mm
    For Housing
    ID, mm
    Wd.,
    mm
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Bearing
    Trade No.
    Each
    Shielded
     
    Corrosion-Resistant 440C Stainless Steel
    252.55
    		35100,000-40240Standard52-2Z
    		7804K11900000
     

    Flanged Ball Bearings

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

    Open

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

    Shielded

    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.
    Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.
    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.
    Flange,
    mm
    Temp.
    Range, ° F
    For Shaft
    Dia., mm
    For Housing
    ID, mm
    Wd.,
    mm
    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
    251.56.10.53
    		30110,000-50300Standard682
    		57155K414000000
    2526.20.63
    		30110,000-50300Standard52
    		57155K41600000
     
    Shielded
     
    Steel
    252.56.20.63
    		3094,000-50300Standard52-2Z
    		57155K52700000
     
    Corrosion-Resistant 440C Stainless Steel
    252.36.10.63
    		3094,000-50300Standard682-2Z
    		57155K52600000
    252.56.20.63
    		3094,000-50300Standard52-2Z
    		57155K52800000
     

    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., mm
    For Housing
    ID, mm
    Wd.,
    mm
    ABEC
    Rating
    Dynamic Radial
    Load Cap., lb.
    Max. Rotation
    Speed, rpm
    Min.
    Max.
    Inner Ring
    Type
    Each
    Open
     
    Corrosion-Resistant 440C Stainless Steel
    251.57
    		22100,000-30280Standard7487N14000000
     

    Metric Press-Fit Drill Bushings

    Image of ProductInUse. Front orientation. Contains Annotated. Drill Bushings. Metric Press-Fit Drill Bushings.
    Image of Product. Front orientation. Drill Bushings. Metric Press-Fit Drill Bushings.
    Also known as jig bushings, these metric drill bushings fit inside fixture plate holes to precisely guide drill bits, counterbores, reamers, and other cutting tools. They improve accuracy so that your drilled holes and cuts are consistent from part to part. Known for their versatility, drill bushings are also used as spacers, shims, and machinery bushings. These bushings are made of hardened, ground steel that holds its shape and resists wear, so they last for many cycles without needing to be replaced.
    All bushings have a chamfer on the outside that centers the bushing as you place it into the hole. Press into place with a manual or hydraulic press. Since the bushing is sized slightly larger than the hole for an extremely tight fit, it’ll stay put permanently. These are ANSI Type PM bushings—also known as headless bushings—which means you don’t need to counterbore the hole to mount them flush.
    They also have an internal chamfer that makes it easy to insert bits, pins, and punches without damaging the bushing or misaligning tools.
    Don't see the size you need? Additional sizes are available.
    Both Ends—Bushings with an internal chamfer on both ends allow you to insert tools no matter which end of the bushing is inserted into the jig. However, having an internal chamfer on the bottom of your bushing may cause shavings to get caught and bind as you remove the bit.
    DIN 179—DIN 179 bushings meet dimensional and material standards that make sure they're compatible with other parts and tools. Although DIN 179 is no longer an active standard, it's still a common reference point for designers.
    Tolerance,
    mm
    Each
    OD,
    mm
    Lg.,
    mm
    Internal
    Chamfer
    For Drill
    Bit Size, mm
    For Drill Bit Size
    Decimal Equiv.
    ID
    OD
    Lg.
    Drill Bushing
    Type
    Material
    Hardness
    Specs.
    Met
    1-5
    6-11
    12-Up
    1.8 mm ID
    56One End1.80.0709"0.002 to 0.0080.019 to 0.027-0.01 to 0.254PMSteel
    		Rockwell C61—96990A868000000000000000
    59One End1.80.0709"0.002 to 0.0080.019 to 0.027-0.02 to 0.2PMSteel
    		Rockwell C61—8486A17000000000000000
     
    1.85 mm ID
    59One End1.850.0728"0.002 to 0.0080.019 to 0.027-0.01 to 0.254PMSteel
    		Rockwell C61—96990A871000000000000
     
    1.9 mm ID
    56One End1.90.0748"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61DIN 17996990A137000000000000
     
    2 mm ID
    56One End20.0787"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61DIN 17996990A139000000000000
    56Both Ends20.0787"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61—96990A732000000000000
    59One End20.0787"0.006 to 0.0160.008 to 0.016-0.2 to 0.2PMSteel
    		Rockwell C61DIN 1798486A18000000000000
    59Both Ends20.0787"0.006 to 0.0160.008 to 0.016-0.2 to 0.2PMSteel
    		Rockwell C61—96990A733000000000000
     
    2.05 mm ID
    56One End2.050.0807"0.002 to 0.0080.019 to 0.027-0.01 to 0.254PMSteel
    		Rockwell C61—96990A874000000000000
     
    2.1 mm ID
    56One End2.10.0827"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61DIN 17996990A141000000000000
     
    2.15 mm ID
    59One End2.150.0846"0.002 to 0.0080.019 to 0.027-0.01 to 0.254PMSteel
    		Rockwell C61—96990A877000000000000
     
    2.3 mm ID
    56One End2.30.0906"0.006 to 0.0160.008 to 0.016-0.25 to 0.25PMSteel
    		Rockwell C61DIN 1798486A51200000000000000
     
    2.4 mm ID
    59One End2.40.0945"0.006 to 0.0160.008 to 0.016-0.2 to 0.2PMSteel
    		Rockwell C61DIN 1798486A221000000000000
    59Both Ends2.40.0945"0.006 to 0.0160.008 to 0.016-0.2 to 0.2PMSteel
    		Rockwell C61—96990A742000000000000
     
    2.5 mm ID
    56One End2.50.0984"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61DIN 17996990A147000000000000
    56Both Ends2.50.0984"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61—96990A743000000000000
    59One End2.50.0984"0.006 to 0.0160.008 to 0.016-0.2 to 0.2PMSteel
    		Rockwell C61DIN 17996990A148000000000000
    59Both Ends2.50.0984"0.006 to 0.0160.008 to 0.016-0.2 to 0.2PMSteel
    		Rockwell C61—96990A744000000000000
     
    2.55 mm ID
    59One End2.550.1004"0.002 to 0.0080.019 to 0.027-0.01 to 0.254PMSteel
    		Rockwell C61—96990A885000000000000
     
    2.6 mm ID
    56One End2.60.1024"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61DIN 17996990A149000000000000
    56Both Ends2.60.1024"0.006 to 0.0160.008 to 0.016-0.1 to 0.1PMSteel
    		Rockwell C61—96990A745000000000000
     

    Clear Ultra-Impact-Resistant Polycarbonate Round Tubes

    Comparable to Lexan, Hyzod, Tuffak, and Makrolon, these polycarbonate tubes are half the weight of glass and maintain excellent impact resistance across a wide temperature range. Use them to make instrument gauge covers and display racks.
    Metric
    Image of Product. Front orientation. Plastic. Clear Ultra-Impact-Resistant Polycarbonate Round Tubes.
    8 ft. Long
    OD,
    mm
    ID,
    mm
    Fabrication
    Min. Temp.,
    ° F
    Max. Temp.,
    ° F
    Flammability
    Rating
    Food Industry
    Std.
    Each
    1.000 mm Thick Wall
    53Extruded-40200UL 94 HB
    		FDA Standard
    		8585K81800000
     

    Metric Press-Fit Drill Bushings with Head

    Image of Product. Front orientation. Contains Annotated. Drill Bushings. Metric Press-Fit Drill Bushings with Head.
    Image of Attribute. Front orientation. Contains Annotated. Drill Bushings. Metric Press-Fit Drill Bushings with Head.
    Image of Specification. Shown in Countersunk Hole. Front orientation. CrossSection view. Drill Bushings. Metric Press-Fit Drill Bushings with Head.
    Image of Specification. Shown in Standard Hole. Front orientation. CrossSection view. Drill Bushings. Metric Press-Fit Drill Bushings with Head.

    Shown in

    Countersunk

    Hole

    Shown in

    Standard Hole

    Even under extreme drilling pressure, these metric bushings won't press through your jig plate. They’re ANSI Type H bushings, also known as headed bushings. A flanged head acts as a stop, so these bushings won’t move as you push down your drill bit, reamer, or other cutting bit. Use them even in jigs made of thin or soft materials—the head adds support to protect your jig from damage caused by heavy use. Drill bushings ensure accurate, consistent cuts and drilled holes from one part to the next. They’re also used as spacers, shims, and machinery bushings. Made of hardened, ground steel, these bushings hold their shape and resist wear, so they last for many cycles without needing to be replaced.
    These bushings meet DIN 172 dimensional standards. This standard is no longer active, but it’s often used as a reference point for making sure parts are compatible with other parts and tools.
    To install, fit the bushing into a hole in your jig. In a standard hole, the head will sit above the jig plate; to mount flush, install in a countersunk hole. A chamfered edge on the bottom of the bushing helps center the bushing in the hole. Once it’s centered, press the bushing into the hole with a hydraulic or lever press.
    Head,
    mm
    Tolerance,
    mm
    Each
    OD,
    mm
    Lg.,
    mm
    For Drill
    Bit Size, mm
    For Drill Bit Size
    Decimal Equiv.
    OD
    Thk.
    ID
    OD
    Lg.
    Drill Bushing
    Type
    Material
    Hardness
    Specs.
    Met
    1-5
    6-11
    12-Up
    1.9 mm ID
    541.90.0748"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A125000000000000000
     
    2 mm ID
    5420.0787"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A127000000000000
    5720.0787"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A128000000000000
     
    2.1 mm ID
    542.10.0827"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A129000000000000
    572.10.0827"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A130000000000000
     
    2.2 mm ID
    542.20.0866"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A131000000000000
    572.20.0866"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A132000000000000
     
    2.3 mm ID
    542.30.0906"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A133000000000000
    572.30.0906"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A134000000000000
     
    2.4 mm ID
    542.40.0945"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A135000000000000
    572.40.0945"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A136000000000000
     
    2.5 mm ID
    542.50.0984"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A137000000000000
    572.50.0984"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A138000000000000
     
    2.6 mm ID
    542.60.1024"820.006 to 0.0160.008 to 0.016-0.1 to 0.1HSteel
    		Rockwell C61DIN 17296977A139000000000000
    572.60.1024"820.006 to 0.0160.008 to 0.016-0.2 to 0.2HSteel
    		Rockwell C61DIN 17296977A140000000000000
     

    Shims for Lengthening Screw Shoulders

    Image of ProductInUse. Front orientation. Contains Annotated. Shims. Round, Sold Individually, Shoulder Lengthening.
    Image of Product. Front orientation. Shims. Round, Sold Individually, Shoulder Lengthening.
    When shoulders come up short, use these shims to extend the shoulder length on your screw. Wiggle the shims over the threads and up to the existing shoulder to create the exact shoulder length you need. Use them to create more space for bearings, pulleys, and sprockets, or extend the length of travel along the shoulder.
    You can stack multiple shims to achieve the exact shoulder length or space you need.
    Stress-Resistant Spring Steel—These shims are harder and hold their shape better than carbon steel. Use them for high-stress applications, such as leveling heavy machinery. They're best for dry environments since moisture will cause them to rust.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Thk.
    Thk. Tolerance
    For Screw
    Size
    ID,
    mm
    ID Tolerance,
    mm
    OD,
    mm
    OD Tolerance,
    mm
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    Stress-Resistant Spring Steel
     
    For 5 mm Diameter Shoulder
    0.005"-0.0005" to 0.0005"M4
    		3.980 to 0.2545-0.254 to 0Rockwell C40592927A121000000
    0.015"-0.001" to 0.001"M4
    		3.980 to 0.2545-0.254 to 0Rockwell C40592927A12500000
     
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