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    128 Products

    Acme Screw Jacks

    Image of Attribute. Top View. Top orientation. Contains Annotated. Jacks. Acme Screw Jacks.

    Top View

    Broad, strong Acme threads make these screw jacks better than ball screw jacks for heavy loads, intermittent positioning applications, and where vibration is present. Screw jacks 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
    Thread Size
    Travel Distance
    per Turn
    Shaft
    Dia.
    Lg.
    Wd.
    Dp.
    Lg.
    Wd.
    Dp.
    Lg.
    Dia.
    Bearing
    Thk.
    Lg.
    Size
    Input Starting Torque
    @ Input Speed
    Each
    Upright Screw Jack
    Image of Product. Front orientation. Contains Annotated. Jacks. Acme Screw Jacks, Upright Screw Jack.
     
    250 lb. Capacity—Carbon Steel Lifting Screw
    3"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"3 7/16"27/32"—1 1/2"1/2"-20
    		7 in·lbf @ 500 rpm5945K110000000
    6"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"6 7/16"27/32"—1 1/2"1/2"-20
    		7 in·lbf @ 500 rpm5945K12000000
    9"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"9 7/16"27/32"—1 1/2"1/2"-20
    		7 in·lbf @ 500 rpm5945K13000000
    12"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"12 7/16"27/32"—1 1/2"1/2"-20
    		7 in·lbf @ 500 rpm5945K14000000
     
    500 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-40.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"3 7/16"27/32"—1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K15000000
    6"5/8"-40.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"6 7/16"27/32"—1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K16000000
    9"5/8"-40.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"9 7/16"27/32"—1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K17000000
    12"5/8"-40.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"12 7/16"27/32"—1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K18000000
     
    1,000 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"3 3/8"27/32"—1"3/8"-24
    		30 in·lbf @ 500 rpm5945K19000000
    6"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"6 3/8"27/32"—1"3/8"-24
    		30 in·lbf @ 500 rpm5945K21000000
    9"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"9 3/8"27/32"—1"3/8"-24
    		30 in·lbf @ 500 rpm5945K22000000
    12"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"12 3/8"27/32"—1"3/8"-24
    		30 in·lbf @ 500 rpm5945K23000000
     
    2,000 lb. Capacity—Carbon Steel Lifting Screw
    4"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"3 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K151000000
    5"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"4 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K191000000
    6"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"5 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K152000000
    8"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"7 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K153000000
    10"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"9 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K154000000
    12"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"11 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K155000000
    14"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"13 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K156000000
    16"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"15 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K157000000
    18"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"17 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K158000000
    20"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"19 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K159000000
    24"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"23 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K111000000
    30"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"29 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K112000000
    36"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"35 7/8"1 5/16"—3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K113000000
     
    4,000 lb. Capacity—Carbon Steel Lifting Screw
    4"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"3 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K251000000
    6"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"5 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K252000000
    8"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"7 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K253000000
    10"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"9 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K254000000
    12"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"11 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K255000000
    14"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"13 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K256000000
    16"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"15 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K257000000
    18"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"17 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K258000000
    20"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"19 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K259000000
    24"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"23 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K124000000
    30"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"29 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K125000000
    36"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"4 1/8"7"5"35 3/4"1 21/32"—1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K12600000000
     
    10,000 lb. Capacity—Carbon Steel Lifting Screw
    4"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"3 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45100000000
    5"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"4 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45200000000
    8"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"7 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45300000000
    10"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"9 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45400000000
    12"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"11 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45500000000
    14"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"13 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45600000000
    16"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"15 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45700000000
    18"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"17 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45800000000
    20"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"19 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K45900000000
    24"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"23 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K71100000000
    30"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"29 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K71200000000
    36"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"35 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K71300000000
    72"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5 1/2"6"8"71 3/4"2 3/8"—1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K75100000000
     
    Inverted Screw Jack
    Image of Product. Front orientation. Contains Annotated. Jacks. Acme Screw Jacks, Inverted Screw Jack.
     
    250 lb. Capacity—Carbon Steel Lifting Screw
    3"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"3 7/16"27/32"1/4"1 5/8"1/2"-20
    		7 in·lbf @ 500 rpm5945K24000000
    6"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"6 7/16"27/32"1/4"1 5/8"1/2"-20
    		7 in·lbf @ 500 rpm5945K25000000
    9"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"9 7/16"27/32"1/4"1 5/8"1/2"-20
    		7 in·lbf @ 500 rpm5945K26000000
    12"1/2"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"12 7/16"27/32"1/4"1 5/8"1/2"-20
    		7 in·lbf @ 500 rpm5945K27000000
     
    500 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-40.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"3 7/16"27/32"1/4"1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K28000000
    6"5/8"-40.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"6 7/16"27/32"1/4"1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K29000000
    9"5/8"-40.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"9 7/16"27/32"1/4"1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K31000000
    12"5/8"-40.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"12 7/16"27/32"1/4"1 1/2"1/2"-20
    		21 in·lbf @ 500 rpm5945K32000000
     
    1,000 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"3 3/8"7/8"1/4"1"3/8"-24
    		30 in·lbf @ 500 rpm5945K33000000
    6"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"6 3/8"7/8"1/4"1"3/8"-24
    		30 in·lbf @ 500 rpm5945K34000000
    9"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"9 3/8"7/8"1/4"1"3/8"-24
    		30 in·lbf @ 500 rpm5945K35000000
    12"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"12 3/8"7/8"1/4"1"3/8"-24
    		30 in·lbf @ 500 rpm5945K36000000
     
    2,000 lb. Capacity—Carbon Steel Lifting Screw
    4"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"3 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K161000000
    6"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"5 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K162000000
    8"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"7 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K163000000
    10"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"9 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K164000000
    12"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"11 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K165000000
    14"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"13 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K166000000
    16"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"15 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K167000000
    18"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"17 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K168000000
    20"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"19 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K169000000
    24"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"23 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K114000000
    30"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"29 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K115000000
    36"3/4"-5
    		0.04"1/2"1"1/8"1/16"3 5/16"5"3 31/32"35 7/8"1 5/16"1/4"3/4"1/2"-13
    		76 in·lbf @ 500 rpm62255K116000000
     
    4,000 lb. Capacity—Carbon Steel Lifting Screw
    4"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"3 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K261000000
    6"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"5 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K262000000
    8"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"7 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K263000000
    10"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"9 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K264000000
    12"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"11 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K265000000
    14"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"13 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K266000000
    16"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"15 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K267000000
    18"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"17 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K268000000
    20"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"19 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K269000000
    24"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"23 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K127000000
    30"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"29 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K128000000
    36"1"-4
    		0.042"1/2"1 3/16"1/8"1/16"3 3/4"7"5"35 3/4"1 21/32"5/16"1 1/16"5/8"-18
    		164 in·lbf @ 500 rpm62255K12900000000
     
    10,000 lb. Capacity—Carbon Steel Lifting Screw
    4"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"3 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46100000000
    6"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"5 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46200000000
    8"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"7 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46300000000
    10"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"9 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46400000000
    12"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"11 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46500000000
    14"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"13 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46600000000
    16"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"15 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46700000000
    18"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"17 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46800000000
    20"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"19 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K46900000000
    24"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"23 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K71400000000
    30"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"29 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K71500000000
    36"1 1/2"-2 2/30.063"3/4"1 7/16"3/16"3/32"5"6"8"35 3/4"2 3/8"1/2"1 1/2"1"-14
    		650 in·lbf @ 300 rpm62255K71600000000
     
    Accessories for Jacks
    Mounting Plates
    Add a flat mounting surface to a screw jack to support loads. Plates rotate in unison with the lifting screw.
    Mounting
    Plate
    Mounting Hole
    For Screw
    Jack Cap., lb.
    Thread
    Size
    Dia.
    Thick.
    Ctr.-to-Ctr.
    Dia.
    No.
    of
    Each
    2,0001/2"-13
    		3 1/2"3/8"2 1/2"7/16"462255K91000000
    4,0005/8"-18
    		4 1/4"7/16"3"13/32"462255K9200000
    10,0001"-14
    		4 1/2"5/8"3"11/16"462255K93000000
    Eyelet End Fittings
    Image of Product. Front orientation. Contains Annotated. Screw Jack End Fittings. Acme Screw Jacks.
    Attach these fittings to the end of a screw jack to create pivoting connections with clevis rod ends and other linkages. Fittings rotate in unison with the lifting screw.
    For Screw
    Jack Cap., lb.
    Thread
    Size
    For Jaw
    Opening Wd.
    For Pin
    Dia.
    Lg.
    Each
    2,0001/2"-13
    		1/2"5/16"1 13/16"62255K71000000
    4,0005/8"-18
    		1"5/8"2 1/2"62255K7200000
    10,0001"-14
    		1 1/4"1"4 1/2"62255K73000000

    Acme Screw Jacks with Mounting Plate

    Image of Attribute. Top View. Top orientation. Contains Annotated. Jacks. Acme Screw Jacks with Mounting Plate.

    Top View

    The mounting plate provides a flat surface for supporting loads. Broad, strong Acme lead screw threads make these screw jacks good for heavy loads, intermittent positioning applications, and where vibration is present. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads. Screw jacks come assembled, threaded, and ready for hookup.
    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
    Mounting Plate
    Mounting Holes
    Travel
    Lg.
    Lifting Screw
    Thread Size
    Travel Distance
    per Turn
    Shaft
    Dia.
    Lg.
    Wd.
    Dp.
    Lg.
    Wd.
    Dp.
    Lg.
    Dia.
    Bearing
    Thk.
    Ctr.-to-Ctr.
    Dia.
    No.
    of
    Input Starting Torque
    @ Input Speed
    Each
    Upright Screw Jack
    Image of Product. Front orientation. Contains Annotated. Jacks. Acme Screw Jacks with Mounting Plate, Upright Screw Jack.
     
    250 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"3 7/16"27/32"—1 1/2"9/32"412 in·lbf @ 500 rpm5945K370000000
    6"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"6 7/16"27/32"—1 1/2"9/32"412 in·lbf @ 500 rpm5945K38000000
    9"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"9 7/16"27/32"—1 1/2"9/32"412 in·lbf @ 500 rpm5945K39000000
    12"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"12 7/16"27/32"—1 1/2"9/32"412 in·lbf @ 500 rpm5945K41000000
     
    500 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"3 7/16"27/32"—1 1/2"9/32"421 in·lbf @ 500 rpm5945K42000000
    6"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"6 7/16"27/32"—1 1/2"9/32"421 in·lbf @ 500 rpm5945K43000000
    9"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"9 7/16"27/32"—1 1/2"9/32"421 in·lbf @ 500 rpm5945K44000000
    12"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"12 7/16"27/32"—1 1/2"9/32"421 in·lbf @ 500 rpm5945K45000000
     
    1,000 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"3 3/8"7/8"—1 1/2"9/32"430 in·lbf @ 500 rpm5945K46000000
    6"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"6 3/8"7/8"—1 1/2"9/32"430 in·lbf @ 500 rpm5945K47000000
    9"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"9 3/8"7/8"—1 1/2"9/32"430 in·lbf @ 500 rpm5945K48000000
    12"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 3/8"4"2 27/32"12 3/8"7/8"—1 1/2"9/32"430 in·lbf @ 500 rpm5945K49000000
     
    Inverted Screw Jack
    Image of Product. Front orientation. Contains Annotated. Jacks. Acme Screw Jacks with Mounting Plate, Inverted Screw Jack.
     
    250 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"3 7/16"27/32"1/4"1 1/2"9/32"412 in·lbf @ 500 rpm5945K51000000
    6"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"6 7/16"27/32"1/4"1 1/2"9/32"412 in·lbf @ 500 rpm5945K52000000
    9"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"9 7/16"27/32"1/4"1 1/2"9/32"412 in·lbf @ 500 rpm5945K53000000
    12"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"12 7/16"27/32"1/4"1 1/2"9/32"412 in·lbf @ 500 rpm5945K54000000
     
    500 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"3 7/16"27/32"1/4"1 1/2"9/32"421 in·lbf @ 500 rpm5945K55000000
    6"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"6 7/16"27/32"1/4"1 1/2"9/32"421 in·lbf @ 500 rpm5945K56000000
    9"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"9 7/16"27/32"1/4"1 1/2"9/32"421 in·lbf @ 500 rpm5945K57000000
    12"5/8"-8
    		0.05"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"12 7/16"27/32"1/4"1 1/2"9/32"421 in·lbf @ 500 rpm5945K58000000
     
    1,000 lb. Capacity—304 Stainless Steel Lifting Screw
    3"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"3 3/8"7/8"1/4"1 1/2"9/32"430 in·lbf @ 500 rpm5945K59000000
    6"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"6 3/8"7/8"1/4"1 1/2"9/32"430 in·lbf @ 500 rpm5945K61000000
    9"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"9 3/8"7/8"1/4"1 1/2"9/32"430 in·lbf @ 500 rpm5945K62000000
    12"5/8"-8
    		0.025"3/8"3/4"1/8"1/16"2 5/16"4"2 27/32"12 3/8"7/8"1/4"1 1/2"9/32"430 in·lbf @ 500 rpm5945K63000000
     
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