McMaster-Carr logo
    Filter by
    System of Measurement
    Shaft Width
    Shaft Type
    Bearing Seal Type
    Shaft Mount Type
    Dynamic Radial Load Capacity
    Inner Ring OD
    Maximum Rotation Speed
    Bearing Type
    Bearing Trade Number
    Industrial Info Snippet
    Attribute Image
    Maximum Temperature
    Inner Ring Type
    Square Width
    For Load Direction
    Ball Bearing Profile
    Bearing Construction
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Minimum Temperature
    Radial Clearance
    Radial Clearance Trade Number
    Rotation Speed
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    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)
    1 Product

    Square-Bore Ball Bearings

    Image of Product. Front orientation. Ball Bearings. Square-Bore Ball Bearings.
    The inside corners of these bearings grip square shafts as they turn, so you don't need set screws to hold them in place. They're a good choice when your setup needs to come apart frequently, since there aren't extra mounting steps.
    Sealed—The best choice for dirty environments. A barrier seals out dust so it won't gunk up or wear down the balls. However, these bearings retain the most heat since air can't flow through.
    Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.
    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
    Wd., 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
    Sealed
     
    Steel
    26801817,300500-20200ExtendedW208PP64469N11000000
    Square-Bore Ball Bearing, Trade Number W208Pp6, for 26 mm Shaft Width
    EachIn stock
     
    back to top