Spur Gears | Straight Cut Gears | 20 Tooth | RS
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    Spur Gears

    Spur gears, also known as straight-cut gears, are a common type of gear used in a wide range of applications. They are designed to transmit large amounts of power by placing them on parallel shafts which rotate in opposite directions.Spur gears consist of a cylinder with teeth around the outer edge. They have a straight tooth, involute profile which project radially and are parallel to the rotation of the axis. This allows for a smoother operation between each gear and permits greater mounting distances. Spur gears can have a central hub or be hubless and are available in a variety of pitch, hub and bore diameters. The standard pressure angles in spur gears are 14.5, 20 and 25 degrees, and refer to the angle that force is transmitted between the meshing gears.Spur gears are capable of meshing with other gears, with many gears being used to create large gear reductions. When they are meshed the gear with the most teeth is referred to as the gear, whereas the one with smaller teeth is referred to as the pinion. The size of the spur gear is described as "module". You can find more information in our spur gears guide.

    Types of spur gears

    Plastic spur gears are commonly made from acetal or nylon and have many positive characteristics including being lightweight, non-rusting and quiet. They enable low cost and large production capabilities and are also able to operate without lubrication. For hygiene reasons, plastic spur gears are an excellent choice for use in industries dealing with food production and medical equipment.Metal spur gears have more strength, load-carrying capacity and heat resilience than their plastic counterpart. They are more dimensionally stable compared to plastic and can be made from many metals such as aluminium, brass and stainless steel.

    What are the advantages of a spur gear?

    High transmission efficiencyCompact and very easy to installConstant velocity ratioNo slippage unlike belt drivesHighly reliableCan transmit large amounts of power

    Where are spur gears used?

    Metal cutting machinesMarine enginesMechanical clocks and watchesFuel pumpsWashing machinesGear motors and gear pumpsRack and pinion mechanismsMaterial handling equipmentAutomobile gear boxesSteel and rolling mills

    946 Products showing for Spur Gears

    2
    18
    Steel
    12mm
    36mm
    30mm
    20mm
    0.7
    25
    -
    6mm
    17.5mm
    9mm
    6mm
    1
    35
    Steel
    6mm
    35mm
    14mm
    5mm
    1
    80
    POM
    8mm
    80mm
    18mm
    6mm
    1
    12
    POM
    4mm
    12mm
    8mm
    6mm
    0.8
    50
    POM
    6mm
    40mm
    14.5mm
    4mm
    1
    10
    Steel
    6mm
    10mm
    12.5mm
    5mm
    0.5
    35
    Steel
    4mm
    17.5mm
    9mm
    4mm
    0.5
    50
    POM
    5mm
    25mm
    12mm
    3mm
    1
    12
    Steel
    5mm
    12mm
    9mm
    15mm
    1
    16
    Steel
    6mm
    16mm
    13mm
    15mm
    2
    15
    Steel
    12mm
    30mm
    24mm
    20mm
    0.8
    56
    POM
    6mm
    44.8mm
    14.5mm
    4mm
    2
    20
    Steel
    12mm
    40mm
    32mm
    20mm
    0.7
    15
    -
    3mm
    10.5mm
    6mm
    6mm
    1
    20
    Steel
    6mm
    20mm
    14mm
    5mm
    1.5
    35
    Hostaform
    10mm
    52.5mm
    24mm
    12mm
    0.5
    80
    POM
    6mm
    40mm
    14mm
    3mm
    1.5
    12
    Steel
    8mm
    18mm
    14mm
    17mm
    1
    22
    Steel
    8mm
    22mm
    18mm
    15mm
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