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    26 Products

    Precision Acme Lead Screws and Nuts

    Image of ProductInUse. Front orientation. Contains Inset. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts.
    Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
    Lead Screws—Right-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Lead Screws—Right-Hand Thread.
    Image of Attribute. Right-Hand Threads. Front orientation. Right-Hand Thread. Precision Acme Lead Screws and Nuts, Lead Screws.

    Right-Hand Threads

    1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.
    Black-Oxide 4140 Alloy Steel—Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance and a dark surface color.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    Thread
    Size
    Lg.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Accuracy for Travel
    Distance per Turn
    Thread Fit
    Hardness
    Tensile Strength,
    psi
    Each
    1018 Low-Carbon Steel
    3/4"-16
    3 ft.Acme
    1:110.063"±0.009"/1 ft.Acme Class 2C
    Brinell 12664,00099030A077000000
    3/4"-16
    6 ft.Acme
    1:110.063"±0.009"/1 ft.Acme Class 2C
    Brinell 12664,00099030A177000000
     
    Black-Oxide 4140 Alloy Steel
    3/4"-16
    18"Acme
    1:110.063"±0.0003"/1"Acme Class 2C
    Brinell 20060,00098940A19700000
    3/4"-16
    3 ft.Acme
    1:110.063"±0.0003"/1"Acme Class 2C
    Brinell 20060,00098940A19800000
    3/4"-16
    6 ft.Acme
    1:110.063"±0.0003"/1"Acme Class 2C
    Brinell 20060,00098940A199000000
     
    Lead Screws—Left-Hand Thread
    Image of Product. Front orientation. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Lead Screws—Left-Hand Thread.
    Image of Attribute. Left-Hand Threads. Front orientation. Left-Hand Thread. Precision Acme Lead Screws and Nuts, Lead Screws.

    Left-Hand Threads

    1018 Low-Carbon Steel—Carbon steel lead screws and flanges have good machinability.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    Thread
    Size
    Lg.,
    ft.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Accuracy for Travel
    Distance per Turn
    Thread Fit
    Hardness
    Tensile Strength,
    psi
    Each
    1018 Low-Carbon Steel
    3/4"-16
    3Acme
    1:110.063"±0.009"/1 ft.Acme Class 2C
    Brinell 12664,00099030A477000000
    3/4"-16
    6Acme
    1:110.063"±0.009"/1 ft.Acme Class 2C
    Brinell 12664,00099030A577000000
     
    Externally Threaded Nuts—Right-Hand Thread
    Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Right-Hand Thread.
    Combine externally threaded nuts with a flange to create a custom flange nut.
    360 Brass—360 brass nuts have excellent machinability and good corrosion resistance.
    Acetal—Acetal nuts have good wear and corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    External
    Thread
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Size
    Lg.
    Thread Fit
    Hardness
    Tensile Strength,
    psi
    Dynamic Thrust
    Load Cap., lb.
    Temp.,
    ° F
    Each
    360 Brass
    3/4"-16
    1 1/4"1.125"Acme
    1:110.063"1"-18
    1/2"Acme Class 2C
    Brinell 70Not Rated2,80095072A371000000
     
    Acetal
    3/4"-16
    1 1/4"1.125"Acme
    1:110.063"1"-18
    1/2"Acme Class 2C
    Rockwell R1208,0001,400-40 to 19090493A12000000
     
    Externally Threaded Nuts—Left-Hand Thread
    Image of Product. Front orientation. Contains Annotated. Precision Lead Screws and Nuts. Precision Acme Lead Screws and Nuts, Externally Threaded Nuts—Left-Hand Thread.
    Combine externally threaded nuts with a flange to create a custom flange nut.
    360 Brass—360 brass nuts have excellent machinability and good corrosion resistance.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
    External
    Thread
    Thread
    Size
    Lg.
    Dia.
    Thread
    Type
    Speed
    Ratio
    No. of Thread
    Starts
    Travel Distance
    per Turn
    Size
    Lg.
    Thread Fit
    Hardness
    Tensile
    Strength
    Dynamic Thrust
    Load Cap., lb.
    Each
    360 Brass
    3/4"-16
    1 1/4"1.125"Acme
    1:110.063"1"-18
    1/2"Acme Class 2C
    Brinell 70Not Rated2,80095072A372000000
     
    Flanges
    Image of Product. Front orientation. Precision Lead Screw Nut Flanges.
    Image of Attribute. Front orientation. Contains Annotated.
    Thread onto an externally threaded acme nut to create a custom flange nut.
    1215 Carbon Steel—Carbon steel flanges have good machinability. However, they will rust when exposed to moisture.
    303 Stainless Steel—303 stainless steel flanges have good corrosion resistance.
    Flange Thread
    Size
    Flange
    Dia.
    Flange
    Thk.
    Bolt Circle
    Dia.
    Flange
    Hardness
    Each
    1215 Carbon Steel
    1"-18
    2 5/8"17/32"2 3/32"Not Rated95082A643000000
     
    303 Stainless Steel
    1"-18
    2 5/8"17/32"2 3/32"Brinell 1401329K1300000
     

    Ball Screw Jacks

    Image of Product. Front orientation. Contains Annotated. Jacks. Ball Screw Jacks, Upright Screw Jack.
    Image of Product. Front orientation. Contains Annotated. Jacks. Ball Screw Jacks, Inverted Screw Jack.
    Image of Attribute. Top View. Top orientation. Contains Annotated. Jacks. Ball Screw Jacks.

    Upright Screw Jack

    Inverted Screw Jack

    Top View

    Low-friction ball bearings allow these screw jacks to use half the power required by an Acme screw jack to lift the same load. Typically used as actuators, they run at higher speeds than Acme screw jacks. They come assembled, threaded, and ready for hookup. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads.
    Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.
    Keyway
    Body
    Tube
    Attachment
    Thread
    Travel
    Lg.
    Lifting
    Screw Dia.
    Travel Distance
    per Turn
    Shaft
    Dia.
    Lg.
    Wd.
    Dp.
    Lg.
    Wd.
    Dp.
    Lg.
    Dia.
    Lg.
    Size
    Input Starting Torque
    @ Input Speed
    Each
    Upright Screw Jack
     
    4,000 lb. Capacity—Alloy Steel Lifting Screw
    3"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"3 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T421000000000
    6"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"6 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T42200000000
    9"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"9 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T42300000000
    12"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"12 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T42400000000
    18"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"18 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T42500000000
    24"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"24 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T42600000000
     
    Inverted Screw Jack
     
    4,000 lb. Capacity—Alloy Steel Lifting Screw
    3"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"3 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T52100000000
    6"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"6 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T52200000000
    9"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"9 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T52300000000
    12"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"12 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T52400000000
    18"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"18 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T52500000000
    24"1"0.042"1/2"1"1/8"1/16"5 5/8"4 1/8"6 1/4"24 3/4"1 21/32"1 1/8"3/4"-16
    50 in·lbf @ 1,750 rpm1410T52600000000
     
    Accessories for Jacks
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