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    76 Products

    Corrosion-Resistant Overload-Protection Spring-Loaded Torque Limiters

    Image of Product. Front orientation. Torque Limiters. Corrosion-Resistant Overload-Protection Spring-Loaded Torque Limiters .
    Prevent corrosion from interfering with these torque limiters’ ability to protect your machinery if there’s a jam, emergency stop, or other overload. Made of nylon, they won’t rust or corrode from moisture, salt, and oil. They cut off torque when they reach the set maximum torque and automatically resume transmitting torque once it drops below the set maximum. They should not be used in applications that frequently exceed the set torque. You can adjust the set torque by tightening the hex head screw on the housing.
    To help you detect an overload, these torque limiters have a sensor ring that moves out of place when these limiters cut off torque. Use a sensor (not included) to trigger an alarm or a shutdown when the ring moves.
    Fasten them to your shaft by tightening the set screws, which bite into the shaft to hold it.
    Shaft-to-Shaft
    Shaft-to-shaft torque limiters also act as a shaft coupling, allowing you to regulate torque transmission between two shafts.
    Misalignment
    Capability
    Keyway
    For Shaft
    Dia.
    Torque,
    in·lbf
    Max. Rotation
    Speed, rpm
    Parallel
    Angular
    OD
    Overall
    Lg.
    Wd.
    Dp.
    No. of
    Springs
    Material
    Drive Direction
    Shaft Mount
    Type
    Re-Engagement
    Position
    Features
    Each
    For Round Shafts
    1/4"4 to 601,8000.01"2 1/2"2 1/2"4Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N1010000000
    3/8"4 to 601,8000.01"2 1/2"2 1/2"4Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N102000000
     
    For Keyed Shafts
    1/2"4 to 601,8000.01"2 1/2"2 1/2"1/8"1/16"4Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N103000000
    1/2"40 to 1501,8000.01"4 1/32"3 7/16"1/8"1/16"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N104000000
    5/8"40 to 1501,8000.01"4 1/32"3 7/16"3/16"3/32"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N105000000
    3/4"40 to 1501,8000.01"4 1/32"3 7/16"3/16"3/32"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N106000000
    1"40 to 1501,8000.01"4 1/32"3 7/16"1/4"1/8"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N107000000
     
    Spring Kits
    Through Shaft
    Through-shaft torque limiters regulate torque transmission between an input shaft and a mounted component, such as a pulley, sprocket, or gear.
    Keyway
    For Shaft
    Dia.
    Torque,
    in·lbf
    Max. Rotation
    Speed, rpm
    OD
    Overall
    Lg.
    Wd.
    Dp.
    No. of
    Springs
    Material
    Drive Direction
    Shaft Mount
    Type
    Re-Engagement
    Position
    Features
    Each
    For Round Shafts
    1/4"4 to 601,8002 1/2"2 1/2"4Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N1080000000
    3/8"4 to 601,8002 1/2"2 1/2"4Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N109000000
     
    For Keyed Shafts
    1/2"4 to 601,8002 1/2"2 1/2"1/8"1/16"4Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N111000000
    1/2"40 to 1501,8004 1/32"3 7/16"1/8"1/16"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N112000000
    5/8"40 to 1501,8004 1/32"3 7/16"3/16"3/32"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N113000000
    3/4"40 to 1501,8004 1/32"3 7/16"3/16"3/32"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N114000000
    1"40 to 1501,8004 1/32"3 7/16"1/4"1/8"6Nylon
    Clockwise and CounterclockwiseSet ScrewMultipleSensor Ring4410N115000000
     
    Spring Kits

    Precision Overload-Protection Spring-Loaded Torque Limiters

    With zero backlash (no play), there’s no motion lost when these torque limiters transfer torque, so machines move smoothly with accurate and repeatable motion. They protect your machinery if there is a jam, emergency stop, or other overload by cutting off torque when a maximum torque is reached. They automatically resume transmitting torque once it drops below the set maximum. When they resume, they start transmitting torque from the same position where they stopped, keeping your drive and output sides in sync. They should not be used in applications that frequently exceed the set torque. You can adjust the set torque by using a spanner wrench to twist the adjustment ring.
    To help you detect an overload, they have a sensor ring that moves out of place when these limiters cut off torque. Use a sensor (not included) to trigger an alarm or a shutdown when the ring moves.
    They clamp evenly around your shaft for more holding power than set screws and won't damage your shaft.
    Shaft-to-Shaft
    Image of System. Shaft-to-Shaft Torque Limiter, Spider, and Hub Shown Assembled. Front orientation. Contains Annotated. Torque Limiters. Precision Overload-Protection Spring-Loaded Torque Limiters , Shaft-to-Shaft.

    Shaft-to-Shaft Torque

    Limiter, Spider, and

    Hub Shown Assembled

    Image of Product. Front orientation. Torque Limiters. Precision Overload-Protection Spring-Loaded Torque Limiters , Shaft-to-Shaft.
    Image of Product. Front orientation. Flexible Shaft Couplings. Precision Overload-Protection Spring-Loaded Torque Limiters .

    Hubs

    Image of Product. Front orientation. Flexible Shaft Couplings. Precision Overload-Protection Spring-Loaded Torque Limiters .

    Hubs

    Shaft-to-shaft torque limiters also act as a flexible shaft coupling, so they compensate for angular and parallel misalignment as they regulate torque transmission between shafts. This reduces vibration and protects components from wear. For a complete unit, you’ll need a torque limiter, a hub, and a spider (all sold separately).
    Torque Limiters
    Hubs
    Spiders
    Keyway
    Misalignment Capability
    For Shaft
    Dia.
    Torque,
    in·lbf
    OD
    Overall
    Lg.
    Wd.
    Dp.
    Material
    Drive Direction
    Shaft Mount
    Type
    Re-Engagement
    Position
    Features
    Each
    Choose a Shaft Diameter
    Each
    Max. Rotation
    Speed, rpm
    Parallel
    Angular
    Temp. Range,
    ° F
    Each
    For Round Shafts
    1/4"9 to 251 3/8"2"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N1100000001/4", 3/8", 1/2"4404N2500000015,0000.003"0 to 1804404N24000000
    3/8"9 to 251 3/8"2"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N120000001/4", 3/8", 1/2"4404N250000015,0000.003"0 to 1804404N2400000
    3/8"18 to 501 3/4"2 3/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N130000001/4", 3/8", 1/2", 5/8"4404N260000010,0000.011"0 to 1809939T1100000
    1/2"36 to 1001 3/4"2 3/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N140000001/4", 3/8", 1/2", 5/8"4404N260000010,0000.011"0 to 1809939T1100000
     
    For Keyed Shafts
    1/2"90 to 2202 9/16"3 3/8"1/8"1/16"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N150000001/2", 5/8", 3/4"4404N27000009,0000.011"0 to 1809939T1400000
    5/8"90 to 2202 9/16"3 3/8"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N160000001/2", 5/8", 3/4"4404N27000009,0000.011"0 to 1809939T1400000
    5/8"225 to 7052 7/8"3 13/16"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N180000001/2", 5/8", 3/4", 1", 1 1/4"4404N280000008,0000.011"0 to 1809939T1700000
    3/4"90 to 2202 9/16"3 3/8"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N170000001/2", 5/8", 3/4"4404N27000009,0000.011"0 to 1809939T1400000
    3/4"225 to 7052 7/8"3 13/16"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N190000001/2", 5/8", 3/4", 1", 1 1/4"4404N280000008,0000.011"0 to 1809939T1700000
    1"225 to 7052 7/8"3 13/16"1/4"1/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N210000001/2", 5/8", 3/4", 1", 1 1/4"4404N280000008,0000.011"0 to 1809939T1700000
    1"710 to 1,5903 5/8"4 3/16"1/4"1/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N22000000003/4", 1", 1 1/4"4404N290000007,0000.011"0 to 1809939T2100000
    1 1/4"710 to 1,5903 5/8"4 3/16"1/4"1/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N23000000003/4", 1", 1 1/4"4404N290000007,0000.011"0 to 1809939T2100000
     
    Through Shaft
    Image of Product. Front orientation. Torque Limiters. Precision Overload-Protection Spring-Loaded Torque Limiters , Through Shaft.
    Through-shaft torque limiters regulate torque transmission between an input shaft and a mounted component, such as a pulley, sprocket, or gear.
    Keyway
    For Shaft
    Dia.
    Torque,
    in·lbf
    Max. Rotation
    Speed, rpm
    OD
    Overall
    Lg.
    Wd.
    Dp.
    Material
    Drive Direction
    Shaft Mount
    Type
    Re-Engagement
    Position
    Features
    Each
    For Round Shafts
    1/4"1.8 to 1310,0001 1/4"1 1/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N310000000
    1/4"18 to 399,0001 9/16"1 1/4"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N32000000
    3/8"18 to 399,0001 9/16"1 1/4"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N33000000
    3/8"45 to 1308,0002 3/16"1 9/16"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N35000000
    1/2"36 to 1058,0002"1 9/16"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N34000000
     
    For Keyed Shafts
    1/2"90 to 2656,0002 9/16"2"1/8"1/16"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N36000000
    5/8"90 to 2656,0002 9/16"2"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N37000000
    5/8"180 to 6154,0003 5/8"2 5/16"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N41000000
    3/4"90 to 2656,0002 9/16"2"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N38000000
    3/4"225 to 7056,0002 7/8"2 1/8"3/16"3/32"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N39000000
    1"400 to 1,3254,0003 5/8"2 5/16"1/4"1/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N42000000
    1 1/4"710 to 1,9904,0003 5/8"2 5/16"1/4"1/8"SteelClockwise and CounterclockwiseClamp OnSingleSensor Ring, Zero Backlash4404N43000000
     

    Overload-Protection Spring-Loaded Torque Limiters

    Image of Product. Front orientation. Torque Limiters. Overload-Protection Spring-Loaded Torque Limiters .
    Protect your machinery if there is a jam, emergency stop, or other overload by cutting off torque between shafts when a maximum torque is reached. These torque limiters automatically resume transmitting torque once it drops below the set maximum. They should not be used in applications that frequently exceed the maximum torque. Since they come factory-set to a maximum torque, there’s no adjustment required and no risk of unintended changes to the torque setting.
    They act as a flexible shaft coupling, so they reduce vibration and protect components from wear by compensating for angular and parallel misalignment. Fasten to your shafts by tightening the set screws, which bite into each shaft to hold it.
    Misalignment
    Capability
    For Shaft
    Dia.
    For Shaft
    Type
    Max. Rotation
    Speed, rpm
    Parallel
    Angular
    OD
    Overall
    Lg.
    Keyway Wd. ×
    Keyway Dp.
    Material
    Center
    Material
    Drive Direction
    Re-Engagement
    Position
    Choose a Maximum Torque, in·lbf
    Each
    1/2"Round1,8000.031"3 1/2"3"6061 Aluminum
    SteelClockwise and CounterclockwiseMultiple25, 50, 75, 100, 1256609K110000000
    5/8"Keyed1,8000.031"3 1/2"3"3/16" × 3/32"6061 Aluminum
    SteelClockwise and CounterclockwiseMultiple25, 50, 75, 100, 1256609K12000000
    3/4"Keyed1,8000.031"3 1/2"3"3/16" × 3/32"6061 Aluminum
    SteelClockwise and CounterclockwiseMultiple25, 50, 75, 100, 1256609K13000000
    7/8"Keyed1,8000.031"3 1/2"3"3/16" × 3/32"6061 Aluminum
    SteelClockwise and CounterclockwiseMultiple25, 50, 75, 100, 1256609K14000000
    1"Keyed1,8000.031"3 1/2"3"1/4" × 1/8"6061 Aluminum
    SteelClockwise and CounterclockwiseMultiple25, 50, 75, 100, 1256609K15000000
    Torque Limiter Sensor Rings
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