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  • 684-ZZ Mini Ball Bearing 4x9x4 Shielded MR684-ZZ

    ID: 4mm x OD: 9mm x W: 4mm
    $4.90
    25 days
    684-ZZ
    990 PCS
    +
    Buy in Bulk & Save!:
    Qty 10+ 25+ 50+
    Price: $4.41 $3.92 $3.43

    684-ZZ bearing is Precision Radial Miniature Ball Bearing Both Sides Metal Shielded and pre-lubricated with Grease

    Sizes: ID 4mm x OD 9mm x W 4mm

    Match #: DDL-940ZZ, L940ZZ, MR684ZZ, R-940ZZ, 684Z, 684ZZ

    Used in: DC Motors, 3D Printers, Fidget Spinner, Roller Blades, Skateboard, Inline Skating, Fan, Blower, Power Tools, Bend Saw, Hand Piece, Hobby, RC Helicopters, RC Planes, RC Trucks, RC Cars, Beam Ball Bearing and many more.

    ball bearing catalog

    The 684-ZZ is a 4mm ball bearing that is found in many applications. The 684-ZZ ball bearing has two non-contact metal shields one on each side of the ball bearing. If your application requires a 684Z ball bearing with only one shield you can get this ball bearing and take one of the shields off. This 4mm ball bearing 684ZZ is high quality and can take electric motor demands if needed.

    Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. All rolling bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. The shield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others

    Sizes:
    ID: 4mm x OD: 9mm x W: 4mm
    Material:
    Chrome Steel SAE-52100
    Lubrications:
    Chevron SRI-2
    Interchange:
    DDL-940ZZ, L940ZZ, MR684ZZ, R-940ZZ, 684Z, 684ZZ

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