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    6 Products

    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.
    Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.
    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
    Shielded
     
    Corrosion-Resistant 440C Stainless Steel
    1/4"1/2"3/16"524050,000-40240StandardR188-2Z
    		57155K37600000
    1/4"1/2"3/16"524050,000-40240ExtendedR188-2Z
    		57155K3870000
     

    Flanged Ball Bearings

    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.
    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.
    Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.
    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
    Shielded
     
    Corrosion-Resistant 440C Stainless Steel
    1/4"1/2"3/16"0.547"0.05"524050,000-65250StandardR188-2Z
    		57155K32300000
    1/4"1/2"3/16"0.547"0.05"524050,000-65250ExtendedR188-2Z
    		57155K3370000
     

    High-Precision Ball Bearings

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

    Shielded

    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.
    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.
    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
    Shielded
     
    Corrosion-Resistant 440C Stainless Steel
    1/4"1/2"3/16"78513,000-10240StandardR188-2Z
    		3759T57000000
     

    High-Precision Flanged Ball Bearings

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

    Shielded

    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.
    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.
    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
    Shielded
     
    Corrosion-Resistant 440C Stainless Steel
    1/4"1/2"3/16"0.547"0.05"78513,000-60250StandardR188-2Z
    		4262T36000000
     
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