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    81 Products

    Set Screw Flexible Shaft Couplings

    Image of System. Hubs, Split Spider, and Retaining Ring Shown Assembled. Front orientation. Contains Annotated. Flexible Shaft Couplings. Set Screw Flexible Shaft Couplings.
    Image of System. (Each Component Sold Separately). Front orientation. Contains Annotated. Flexible Shaft Couplings. Set Screw Flexible Shaft Couplings.

    Hubs, Split Spider, and

    Retaining Ring Shown

    Assembled

    (Each Component Sold

    Separately)

    Image of System. Hubs and Spider Shown Assembled. Front orientation. Contains Annotated. Flexible Shaft Couplings. Set Screw Flexible Shaft Couplings.
    Image of System. (Each Component Sold Separately). Front orientation. Exploded view. Contains Annotated. Flexible Shaft Couplings. Set Screw Flexible Shaft Couplings.

    Hubs and Spider Shown

    Assembled

    (Each Component Sold

    Separately)

    Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.
    A complete coupling consists of two hubs and one spider, or two hubs, one split spider, and one retaining ring (all components sold separately). Split spiders are easier to install and replace than standard spiders because there’s no need for tools or removing your hubs. Twist-lock them in place using a retaining ring.
    Buna-N—Buna-N spiders provide good vibration damping and chemical resistance.
    Hytrel—Hytrel spiders provide fair vibration damping and excellent chemical resistance.
    Polyurethane Rubber—Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.
    Hubs
    Buna-N Spiders
    Hytrel Spiders
    Polyurethane Spiders
    Polyurethane Split Spiders
    347 Stainless Steel
    Retaining Rings
    Misalignment Capability
    Misalignment Capability
    Misalignment Capability
    Misalignment Capability
    Overall
    Lg.
    OD
    For Shaft
    Type
    For Rotary Motion
    For Shaft
    Dia., mm
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Temp. Range,
    ° F
    Spider
    Material
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Temp. Range,
    ° F
    Spider
    Material
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Temp. Range,
    ° F
    Spider Material
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Temp. Range,
    ° F
    Spider Material
    Each
    Each
     
    Iron Hubs
    2 1/8"1 3/4"KeyedForward/Reverse, Start/Stop226408K1300000011,000900.015"-40 to 212Buna-N
    6408K740000003,6002250.015"0.5°-55 to 245Hytrel6408K940000003,6001350.015"-30 to 160Polyurethane Rubber
    2410K11000000———0———0
    2 5/32"2 7/64"KeyedForward/Reverse, Start/Stop226408K14000009,0001400.015"-40 to 212Buna-N
    6408K75000003,6004000.015"0.5°-55 to 245Hytrel6408K95000003,6002100.015"-30 to 160Polyurethane Rubber
    2410K13000009,2006700.03"-30 to 200Polyurethane Rubber
    2393K330000002393K23000000
    2 27/32"2 35/64"KeyedForward/Reverse, Start/Stop226408K16000007,0003150.015"-40 to 212Buna-N
    6408K77000003,6007900.015"0.5°-55 to 245Hytrel6408K960000003,6004750.015"-30 to 160Polyurethane Rubber
    2410K15000007,7001,1100.03"-30 to 200Polyurethane Rubber
    2393K340000002393K2400000
     
    Steel Hubs
    64 mm54 mmKeyedForward/Reverse, Start/Stop226133N16000009,0001400.015"-40 to 212Buna-N
    6408K75000003,6004000.015"0.5°-55 to 245Hytrel6408K9500000———0———0———0
    89 mm65 mmKeyedForward/Reverse, Start/Stop226133N18000007,0003150.015"-40 to 212Buna-N
    6408K77000003,6007900.015"0.5°-55 to 245Hytrel6408K96000000———0———0———0
    108 mm85 mmKeyedForward/Reverse, Start/Stop226133N19000005,0007900.015"-40 to 212Buna-N
    6408K79000003,6002,2650.015"0.5°-55 to 245Hytrel6408K97000000———0———0———0
     

    High-Torque Set Screw Flexible Shaft Couplings

    Image of System. Front orientation. Contains Annotated, MultipleImages. Flexible Shaft Couplings. High-Torque Set Screw Flexible Shaft Couplings.
    Image of System. Front orientation. Contains Annotated, MultipleImages. Flexible Shaft Couplings. High-Torque Set Screw Flexible Shaft Couplings.
    The thick split spider on these couplings takes on twice as much torque as standard split spiders, while a set screw holds the hubs in place on your shaft. Also known as jaw couplings, use them to connect motors to pumps, mixers, and other high-torque equipment. You don’t need to lubricate them.
    For a complete coupling, you’ll need two hubs, one split spider, and a split spider cover (all sold separately).
    Hubs attach to the end of your shaft.
    Split spiders cushion between the two hubs to dampen vibration, reduce shocks, and handle shaft misalignment, extending the life of bearings, seals, and motors. You can replace them without having to remove the hubs or move your shaft and equipment around, which reduces the risk of needing to realign the shaft.
    Split spider covers hold the spider in place.
    Hubs
    303 Stainless Steel
    Split Spider Covers
    Steel Split
    Spider Covers
    Overall
    Lg.
    OD
    For Shaft
    Type
    For Rotary Motion
    For Shaft
    Dia., mm
    Each
    Each
    Each
     
    303 Stainless Steel Hubs, Split Spiders
    2 13/16"2"KeyedForward/Reverse, Start/Stop223565N10000003565N61000000———0
     
    Steel Hubs, Split Spiders
    3 39/64"2 5/16"KeyedForward/Reverse, Start/Stop223565N200000———03565N62000000
     
    Urethane Split Spiders

    Clamping Vibration-Damping Precision Flexible Shaft Couplings

    Image of System. Front orientation. Contains Annotated. Flexible Shaft Couplings. Clamping Vibration-Damping Precision Flexible Shaft Couplings.
    Image of System. (Each Component Sold Separately). Front orientation. Exploded view. Contains Annotated, MultipleImages. Flexible Shaft Couplings. Clamping Vibration-Damping Precision Flexible Shaft Couplings.

    (Each Component Sold

    Separately)

    Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure. Good for precision motor and pump applications, the spider-shaped cushion reduces shock and compensates for minor shaft misalignment. Couplings allow zero backlash (no play).
    A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are lightweight, corrosion-resistant aluminum. Spiders are polyurethane for fair vibration damping and good chemical resistance.
    Hubs
    Durometer 98A Polyurethane Spiders
    Durometer 92A Polyurethane Spiders
    Misalignment Capability
    Misalignment Capability
    Overall
    Lg., mm
    OD,
    mm
    For Shaft
    Type
    For Rotary Motion
    For Shaft
    Dia., mm
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Temp. Range,
    ° F
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Temp. Range,
    ° F
    Each
     
    2024 Aluminum Hubs
    6150.8KeyedForward/Reverse, Start/Stop229845T6100000008,0005500.005"0.8°0 to 1809845T240000008,0004400.006"0.9°0 to 1809845T25000000
    6150.8RoundForward/Reverse, Start/Stop229845T55000008,0005500.005"0.8°0 to 1809845T24000008,0004400.006"0.9°0 to 1809845T2500000
    8057.2KeyedForward/Reverse, Start/Stop229845T620000008,0008200.004"0.8°0 to 1809845T26000008,0005700.005"0.9°0 to 1809845T2700000
    8057.2RoundForward/Reverse, Start/Stop229845T560000008,0008200.004"0.8°0 to 1809845T26000008,0005700.005"0.9°0 to 1809845T2700000
     

    Servomotor Precision Flexible Shaft Couplings

    Image of Product. Front orientation. Flexible Shaft Couplings. Servomotor Precision Flexible Shaft Couplings.
    Able to handle high twisting forces as well as misalignment, these couplings are good for high-performance servomotor applications. Couplings are aluminum and stainless steel for corrosion resistance and allow zero backlash (no play). They grip evenly around your shaft for a strong hold without marring the shaft. Tighten the clamping screws to secure.
    Misalignment
    Capability
    For Shaft
    Diameter
    Overall
    Lg.
    OD
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Axial
    For Rotary Motion
    Each
     
    2017 Aluminum and 304 Stainless Steel
    3/8" × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K6250000000
    1/2" × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K636000000
    5/8" × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K647000000
    3/4" × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K658000000
    1" × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K668000000
    16 mm × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K677000000
    17 mm × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K685000000
    18 mm × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K692000000
    19 mm × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K697000000
    20 mm × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K602000000
    22 mm × 22 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K605000000
    22 mm × 24 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K606000000
    22 mm × 25 mm2 23/64"2 7/32"10,0002200.011"0.031"Forward/Reverse, Start/Stop2764K607000000
     

    Lightweight Flexible Shaft Couplings

    Image of System. Front orientation. Contains Annotated. Flexible Shaft Couplings. Lightweight Flexible Shaft Couplings.
    Image of System. (Each Component Sold Separately). Front orientation. Exploded view. Contains Annotated. Flexible Shaft Couplings. Lightweight Flexible Shaft Couplings.

    (Each Component Sold

    Separately)

    Made with lightweight nylon sleeves, these gear couplings require less energy to move than other high-torque flexible couplings. They compensate for parallel, angular, and axial misalignment. Fasten to your shafts by tightening the set screws, which bite into the shaft to hold it.
    A complete coupling consists of two hubs and one sleeve (each component sold separately).
    Hubs
    Nylon Sleeves
    Misalignment Capability
    Overall
    Lg., mm
    OD,
    mm
    For Shaft
    Type
    For Rotary
    Motion
    For Shaft
    Dia., mm
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque
    Parallel
    Angular
    Axial
    Max. Temp.,
    ° F
    Each
     
    Steel Hubs
    52.644.7KeyedContinuous226247K5300000010,600530 ft·lbf0.016"0.04"1806247K83000000
    8068.6KeyedContinuous226247K569000006,7002,120 in·lbf0.016"0.04"1806247K8500000
     

    Metal-Detectable Flexible Shaft Couplings

    Image of System. Hubs and Spider Shown Assembled. Front orientation. Contains Annotated. Flexible Shaft Couplings. Metal-Detectable Flexible Shaft Couplings.
    Image of System. (Each Component Sold Separately). Front orientation. Exploded view. Contains Annotated. Flexible Shaft Couplings. Metal-Detectable Flexible Shaft Couplings.

    Hubs and Spider

    Shown Assembled

    (Each Component Sold

    Separately)

    Safely connect slightly misaligned shafts near food lines—the spider on these couplings contains metal, so it’ll trigger a metal detector if a piece frays off and contaminates your batch. The hubs are made of 303 stainless steel to resist rusting in wet conditions common to food plants. However, these couplings shouldn’t directly touch food, since they’re not FDA compliant. If the spider fails, the hubs will interlock, giving you time to shut down equipment before other components break. You don’t need to lubricate these couplings.
    Also called Lovejoy® and jaw couplings, a complete coupling requires two hubs and one spider (all sold separately).
    Hubs attach to the end of your shaft and have a set screw that bites into the shaft to hold the coupling in place.
    Spiders cushion between the two hubs to reduce shocks and handle minor shaft misalignment.
    Metal-Impregnated Buna-N—Metal-impregnated Buna-N spiders are the most commonly used and are good for applications that start, stop, and reverse often. They also dampen vibration and resist some chemicals.
    Metal-Impregnated Hytrel—Metal-impregnated Hytrel spiders run at higher torque and resist chemicals better than Buna-N spiders. However, they shouldn’t be used in applications that start, stop, and reverse frequently.
    Hubs
    Metal-Impregnated Buna-N Spiders
    Metal-Impregnated Hytrel Spiders
    Misalignment Capability
    Misalignment Capability
    Overall
    Lg., mm
    OD,
    mm
    For Rotary Motion
    For Shaft
    Dia., mm
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Spider Material
    Each
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Spider Material
    Each
    303 Stainless Steel Hubs
    5445Continuous, Forward/Reverse, Start/Stop226953N11100000003,600800.015"Metal-Impregnated Buna-N3507N390000003,6002400.015"Metal-Impregnated Hytrel3507N44000000
    6454Continuous, Forward/Reverse, Start/Stop226953N1810000003,6001850.015"Metal-Impregnated Buna-N3507N4000003,6005650.015"Metal-Impregnated Hytrel3507N45000000
     

    High-Speed Servomotor Precision Flexible Shaft Couplings

    Image of Product. Front orientation. Flexible Shaft Couplings. High-Speed Servomotor Precision Flexible Shaft Couplings.
    Connect shafts and ball screws to high-speed servomotors and stepper motors—these shaft couplings handle four times more speed than standard servomotor couplings. They’re often found on high-torque motors that frequently start and stop, such as those used with packaging machines, press brakes, and semiconductor manufacturing equipment.
    With aluminum hubs joined by a flexible fluoroelastomer or Buna-N core, these shaft couplings dampen vibration and adjust for misalignment. When machines accelerate and decelerate quickly, these couplings remain stiff to maintain accuracy and repeatability, which prevents equipment from moving out of place. They also resist backlash, meaning all of the turning force from the motor is passed on to the connected shaft. The core resists water, petroleum-based chemicals, and inorganic acids while also insulating bearings, encoders, and other shaft components from stray electric current. Clamping screws provide hold without marring shafts; they’re useful in applications where shafts are frequently assembled and disassembled.
    Misalignment
    Capability
    For Shaft
    Diameter
    Overall
    Lg.
    OD
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel
    Angular
    Axial
    For Rotary Motion
    Each
    2017 Aluminum with Buna-N Center
    20 mm × 22 mm2 61/64"2 43/64"9,0005750.008"1.5°0.012"Forward/Reverse, Start/Stop6853N1560000000
    22 mm × 25 mm2 61/64"2 43/64"9,0005750.008"1.5°0.012"Forward/Reverse, Start/Stop6853N157000000
     

    Set Screw Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Set Screw Shaft Collars.
    Slide these traditional collars from one end of the shaft and tighten the set screw. They dig into the shaft for a secure hold, but one that leaves a gouge. For maximum holding power, make sure the set screw is harder than the shaft.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    Set
    Screw
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    223814Hex Socket157485K7600000
     
    303 Stainless Steel
    223814Hex Socket157485K3800000
     

    Shaft Collars

    Image of Product. Front orientation. Shaft Collars.
    Slide these collars from one end of your shaft and tighten the clamping screw. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    Aluminum—One-third the weight of steel and corrosion resistant.
    Clamping
    Screw
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    224215Socket Head157445K419000000
     
    303 Stainless Steel
    224215Socket Head19616T41900000
     
    Aluminum
    224215Socket Head19506T31900000
     

    Shaft Collars with Lever

    Image of Product. Front orientation. Shaft Collars. Shaft Collars with Lever.
    Ideal for frequent setup changes in tight spaces, these collars tighten with a lever instead of a screwdriver. Slide them from one end of your shaft and turn the lever like a ratchet to secure. To reposition or remove collars later, use the lever to loosen the screw and release the hold.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    Black Anodized Aluminum—One-third the weight of steel and more corrosion resistant than unfinished aluminum.
    Lever,
    mm
    Clamping
    Screw
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Ht.
    Lg.
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    22421538.545Socket Head13466N34000000
     
    303 Stainless Steel
    22421538.545Socket Head13466N700000
     
    Black Anodized Aluminum
    22421538.545Socket Head13466N10600000
     

    Two-Piece Shaft Collars with Lever

    Image of Product. Front orientation. Shaft Collars. Two-Piece Shaft Collars with Lever.
    Skip the screwdriver—tighten these collars by turning the lever like a ratchet instead. They're ideal for packing, printing, label-feeding, and other equipment requiring frequent setup changes in tight spaces. Attach them anywhere along your shaft, which helps when other components are already installed or you can't access the ends. To reposition or remove collars later, use the lever to loosen the screw and release the hold.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    Black Anodized Aluminum—One-third the weight of steel and more corrosion resistant than unfinished aluminum.
    Lever,
    mm
    Clamping
    Screw
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Ht.
    Lg.
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    22421538.545Socket Head23553N143000000
     
    303 Stainless Steel
    22421538.545Socket Head23553N24300000
     
    Black Anodized Aluminum
    22421538.545Socket Head23553N34300000
     

    Two-Piece Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Two Piece, For Round Shafts.

    For Round Shafts

    Attach these collars anywhere along your shaft, which helps when other components are already installed or you can't access the end. They clamp firmly and evenly without marring the shaft, so you can reposition or remove collars later.
    Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.
    303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These are easier to machine than other stainless steel collars.
    316 Stainless Steel—More corrosion resistant than 303 stainless steel collars. These collars withstand salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.
    Aluminum—One-third the weight of steel and corrosion resistant.
    Clamping
    Screw
    For Round Shafts
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Type
    No.
    Included
    Each
    Black-Oxide Carbon Steel
    224215Socket Head26063K48000000
     
    303 Stainless Steel
    224215Socket Head29731N1400000
     
    316 Stainless Steel
    224215Socket Head29652T4100000
     
    Aluminum
    224215Socket Head27731N1300000
     

    Plastic Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Plastic Shaft Collars.
    Lightweight alternatives to metal collars for weight-sensitive applications. Slide these collars from one end of your shaft and tighten the clamping screw. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.
    Acetal—Resist swelling when exposed to moisture.
    Clamping
    Screw
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Type
    No.
    Included
    Each
    Acetal
    224215Socket Head13761N111000000
     

    Plastic Two-Piece Shaft Collars

    Image of Product. Front orientation. Shaft Collars. Plastic Two-Piece Shaft Collars.
    Lightweight alternatives to metal two-piece collars for weight-sensitive applications. Attach these collars anywhere along a shaft when other components are already installed or you can't access the ends. They clamp firmly and evenly without marring the shaft, so you can reposition or remove them later.
    Acetal—Resist swelling when exposed to moisture.
    Clamping
    Screw
    For Shaft
    Dia., mm
    OD,
    mm
    Wd.,
    mm
    Type
    No.
    Included
    Each
    Acetal
    224215Socket Head23585N22000000
     
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