McMaster-Carr logo
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    36 Products

    Round Belt Drive Pulleys

    Image of Product. Front orientation. Round Belt Drive Pulleys.
    Image of Attribute. Front orientation. Contains Annotated.
    Mount these pulleys directly onto a shaft to transmit rotary motion and torque. Commonly used in harsh environments and wet conditions, they are corrosion and abrasion resistant. The bore can be machined to your exact specifications.
    For Belt
    Dia.
    OD
    For Shaft
    Dia.
    Dia.
    Wd.
    Groove
    Dp.
    For Max.
    Shaft Dia.
    Material
    Each
    1/8"1.5"1/4"1.375"3/8"0.062"1/2"UHMW Polyethylene
    6284K11000000
    1/4"1.5"1/4"1.22"1/2"0.14"1/2"UHMW Polyethylene
    6284K5100000
    1/4"2"1/4"1.72"1/2"0.14"1/2"UHMW Polyethylene
    6284K5200000
    1/4"2.5"1/4"2.22"1/2"0.14"3/4"UHMW Polyethylene
    6284K5300000
    1/4"3"1/2"2.72"1/2"0.14"3/4"UHMW Polyethylene
    6284K5400000
    1/4"4"1/2"3.72"1/2"0.14"1"UHMW Polyethylene
    6284K5600000
    3/8"2"1/4"1.59"5/8"0.205"1/2"UHMW Polyethylene
    6284K6100000
    3/8"3"1/4"2.59"5/8"0.205"3/4"UHMW Polyethylene
    6284K6300000
    3/8"6"1/2"5.59"5/8"0.205"2"UHMW Polyethylene
    6284K6900000
    1/2"3"1/4"2.47"3/4"0.265"3/4"UHMW Polyethylene
    6284K8100000
    1/2"4"1/2"3.47"3/4"0.265"1"UHMW Polyethylene
    6284K8300000
    1/2"5"1/2"4.47"3/4"0.265"1 1/2"UHMW Polyethylene
    6284K8500000
    1/2"6"1/2"5.47"3/4"0.265"2"UHMW Polyethylene
    6284K8700000
    1/2"10"1/2"9.47"3/4"0.265"3"UHMW Polyethylene
    6284K94000000
    3/4"5"1/2"4.19"1 1/4"0.405"1 1/2"UHMW Polyethylene
    6284K2100000

    Round Belt Idler Pulleys

    Image of Product. Front orientation. Round Belt Idler Pulleys. Round Belt Idler Pulleys, Brass.
    Image of Product. Front orientation. Round Belt Idler Pulleys. Round Belt Idler Pulleys, Nylon.
    Image of Attribute. Front orientation. Contains Annotated. Round Belt Idler Pulleys.

    Brass

    Nylon

    These pulleys spin freely on built-in bearings to maintain tension for reduced wear and vibration. They are often used with belt tensioners (sold separately). Ball bearings are double sealed to keep dirt out.
    Brass—Brass pulleys are nonsparking and fit in extremely small spaces.
    Nylon—Nylon pulleys are lightweight and corrosion and abrasion resistant.
    For Belt
    Dia.
    OD
    For Shaft
    Dia.
    Dia.
    Wd.
    Groove
    Dp.
    Material
    Bearing
    Material
    Each
    3/32"0.8"1/8"0.654"9/64"0.048"BrassStainless Steel
    6447K1000000
    3/32"1"1/8"0.904"5/32"0.048"BrassStainless Steel
    6447K300000
    3/32"1.5"1/8"1.404"5/32"0.048"BrassStainless Steel
    6447K400000
    1/8"1"1/4"0.872"3/16"0.064"BrassStainless Steel
    6447K500000
    1/8"1.5"1/4"1.372"3/16"0.064"BrassStainless Steel
    6447K600000
    1/8"1.5"1/4"1.372"13/64"0.064"BrassStainless Steel
    6447K700000
    1/8"2"1/4"1.872"13/64"0.064"BrassStainless Steel
    6447K800000
    3/16"2"3/8"1.81"9/32"0.095"BrassStainless Steel
    6447K900000
    3/16"2.5"3/8"2.31"9/32"0.095"BrassStainless Steel
    6447K1100000
    1/4"4.5"3/8"3.74"55/64"0.36"Nylon
    Steel59475K5300000
    1/4"4.5"1/2"3.74"55/64"0.36"Nylon
    Steel59475K6300000
    1/4"6"3/8"5.2"51/64"0.4"Nylon
    Steel59475K5600000
    1/4"6"1/2"5.2"51/64"0.4"Nylon
    Steel59475K6600000
    3/8"3.1"3/8"2.45"39/64"0.3"Nylon
    Steel59475K5100000
    3/8"3.1"1/2"2.45"39/64"0.3"Nylon
    Steel59475K6100000
    3/8"3.5"3/8"2.75"49/64"3/8"Nylon
    Steel59475K5200000
    3/8"3.5"1/2"2.75"49/64"3/8"Nylon
    Steel59475K6200000
    3/8"5.5"3/8"4.62"9/16"0.44"Nylon
    Steel59475K5500000
    3/8"5.5"1/2"4.62"9/16"0.44"Nylon
    Steel59475K6500000
    11/16"4.8"3/8"4"1 1/16"0.41"Nylon
    Steel59475K5400000
    11/16"4.8"1/2"4"1 1/16"0.41"Nylon
    Steel59475K6400000
    back to top