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    4. Machine Screw Jack

    Machine Screw Jack

    Worm Gear Machine Screw Jacks incorporate an alloy steel worm gear which drives a high strength bronze drive sleeve. The worm shaft is supported on anti-friction tapered roller bearings with external seals to prevent loss of lubrication. The drive sleeve is supported on tapered roller or thrust bearings.

    產(chǎn)品介紹

    Machine Screw Jack Specifications:

    Model Gear Ratio Capacity (tons)

    Lifting Screw Dia

    (in)

    Screw Lead

    (in)

    Root Dia

    (in)

    		 Turns of Worm for 1" Travel

    Max Input Torque

    (in-lb)

    Max Input

    (hp)

    Max Worm Speed at Rate Load

    (rpm)

    Max Load at 1,750 rpm

    (lb)

    		 Torque to Raise 1lb. (in-lb)

    Lift Shaft Eff.

    (%)

    Tare Drag Torque

    (in-lb)
    1-MSJ 5:1 1 3?4 .200 .502 25 45 1?2 700 800 .0225 40 3
    20:1 1 3?4 .200 .502 100 21 1?4 750 857 .0105 40 3

    2-MSJ

    		 6:1 2 1 .250 .698 24 100 2 1,260 2,881 .0250 38 4
    12:1 2 1 .250 .698 48 62 1 1?2 1,525 3,456 .0154 38 4
    24:1 2 1 .250 .698 96 42 1?2 750 1,715 .0105 38 4
    2R-MSJ 6:1 2 1 .250 .698 24 100 2 1,260 2,881 .0250 38 4
    12:1 2 1 .250 .698 48 62 1 1?2 1,525 3,486 .0154 38 4
    24:1 2 1 .250 .698 96 42 1?2 750 1,715 .0105 38 4
    2.5-MSJ 6:1 2 1?2 1 .250 .698 24 126 2 1,000 2,858 .0252 38 5
    12:1 2 1?2 1 .250 .698 48 74 1 1?2 1,277 3,650 .0148 38 5
    24:1 2 1?2 1 .250 .698 96 53 1?2 594 1,699 .0106 38 5
    5-MSJ 6:1 5 1 1?2 .375 1.066 16 376 3 500 2,873 .0376 40 10
    24:1 5 1 1?2 .375 1.066 64 144 3?4 330 1,875 .0144 40 10
    10-MSJ 8:1 10 2 .500 1.410 16 753 5 418 4,766 .0377 40 20
    24:1 10 2 .500 1.410 48 384 1 1?2 246 2,813 .0192 40 20
    15-MSJ 8:1 15 2 1?4 .500 1.684 16 1,221 5 258 4,424 .0407 37 20
    24:1 15 2 1?4 .500 1.684 48 654 1 1?2 144 2,478 .0218 37 20
    20-MSJ 8:1 20 2 1?2 .500 1.908 16 1,740 7 1?2 272 6,209 .0435 34 40
    24:1 20 2 1?2 .500 1.908 48 873 2 1?2 180 4,130 .0218 34 40
    30-MSJ 10 2?3:1 30 3 3?8 .667 2.652 16 2,710 11 256 8,764 .0432 34 50
    32:1 30 3 3?8 .667 2.652 48 1,411 3 1?2 156 5,364 .0235 34 50
    35-MSJ 10 2?3:1 35 3 3?4 .667 3.009 16 3,450 11 200 8,035 .0493 30 50
    32:1 35 3 3?4 .667 3.009 48 1,800 3 1?2 122 4,904 .0257 30 50
    50-MSJ 10 2?3:1 50 4 1?2 .667 3.782 16 5,555 16 181 10,382 .0555 28 100
    32:1 50 4 1?2 .667 3.782 48 3,014 5 104 5,982 .0301 28 100
    75-MSJ 10 2?3:1 75 5 .667 4.286 16 8,236 28 214 18,368 .0549 26 155
    32:1 75 5 .667 4.286 48 3,780 9 150 12,862 .0252 26 155
    100-MSJ 10 2?3:1 100 6 .667 5.254 16 13,166 32 153 17,330 .0665 22 205
    32:1 100 6 .667 5.254 48 7,460 12 1?2 106 11,941 .0377 22 205

     

    Machine Screw Jack Highlights:

    • Acme screw
    • Self locking
    • Low noise (no rolling components)
    • Ideal for vertical and light loads
    • Pre-loaded nut assembly reduces backlash
    • Safe for static loads
    • Lower cost
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