Ball Screw Jacks, Machine Screw Jacks, Bevel Gear Jacks
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    Machine Ball Screw Jacks

    Using the famous TBI ball screw, our machine ball screw jacks offer higher transmission efficiency, greater speed, longer life, and lower noise than other machine screw actuators. Especially suitable for high speed and high-frequency operation, the speed up to 6.5m/min. Ball Screw Jacks can be used individually or as part of a larger mechanical system and require less power to drive the load. Because of no self-locking function, a machine ball screw jack needs a brake motor or external locking device to hold the position.

    Alloy steel input shafts
    ZQAl9-4 tin bronze worm gears
    Tapered or ball thrust bearings
    Protective tube and bellows are available
    Top plate, clevis end, thread end, plain end standard
    SIJIE can customize to your specifications

     Get A Quote
      Machine Ball Screw Jacks Specifications
     
    Model SJB-010 SJB-025 SJB-050 SJB-100 SJB-150 SJB-200 SJB-300 SJB-500 SJB-750 SJB-1000
    Max. Lifting Load ( KN ) 7 12 39 56 73 110 129 143 200 300
    Outer Diameter Of Screw ( mm ) 20 25 40 50 50 63 80 100 125 160
    Root Diameter Of Screw ( mm ) 17.5 21.133 34.91 44.91 44.91 57.91 72.466 87 110 142
    Ball Screw Lead ( mm ) 5 10 10 10 20 10 20 25 25 32
    Gear Ratio H 5 6 6 8 8 8 32/3 32/3 32/3 12
    L 20 24 24 24 24 24 32 32 32 36
    Efficiency % H 0.4 0.4 0.40 0.40 0.40 0.40 0.4 0.40 0.40 0.40
    L 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
    Max. Permissible Input Power ( KW ) H 0.54 1.3 2.2 3.6 4.0 5.5 8.9 13.3 14.5 21.5
    L 0.27 0.63 1.0 1.9 2.1 2.8 4.1 6.5 7.5 9.5
    No-Load Torque ( N.m ) 0.29 0.62 1.37 1.96 2.65 3.92 9.81 19.6 27 38
    Keeping Torque ( N.m ) H 1.27 4.31 10.78 19.6 39.2 51.0 68.6 140.1 175 260
    L 0.26 0.91 2.4 5.8 11.8 15.0 19.5 41.2 52 70
    Permissible Input Torque ( N.m ) 19.6 49.0 153.9 292.0 292.0 292.0 735.0 1372.0 1764 2450
    Max. Load, Required Input Torque ( N.m ) H 2.8 9.0 21.5 39.1 77.0 104.5 169.6 317.5 435 663
    L 1.4 4.3 9.6 20.4 39.6 54.2 98.5 177.9 242 365
    Screw Travel(mm) Per Turn Of Worm Shaft H 1 1.66 1.67 1.25 2.5 1.25 1.88 2.25 2.34 2.67
    L 0.25 0.42 0.42 0.42 0.83 0.42 0.63 0.75 0.78 0.89
    Max. Load, Permissible Input Speed( rpm) H 1500 1400 1000 890 500 500 500 400 310 300
    L 1500 1400 1000 890 500 500 400 350 295 240
    Max. Load, Lifting Screw Output Torque( N.m ) 8.7 34.7 86.7 208.2 416.3 555.1 1040.9 2081.7 2514 4586
    Remarks: 1: Efficiency is under grease lubrication  2: H: High speed gear ratio  L: Low Speed Gear Ratio

    Machine Ball Screw Jacks Ordering Information Part Number:

    SJB-100  - US  -  T  -   C -   1/8  -  300   - P
        1              2       3     4        5         6       7  

    1: Jack Model
    SJB-010, SJB-025, SJB-050, SJB-100, SJB-150, SJB-200, SJB-300, SJB-500, SJB-750, SJB-1000.
    Before selecting the jack model, please check above machine ball screw jacks specifications.

    2: Screw Configuration & Mounting Orientation
    US: Upright translating screw        UK: Upright keyed screw        UR: Upright rotating screw
    IS: Inverted translating screw         IK: Inverted keyed screw         IR: Inverted rotating screw
    Note:US,IS (Screw rotation, do axial motion)  UK, IK (Screw anti-rotation, do axial motion) UR,IR(Screw fixed rotation, traveling nut do axial motion)

                    US                        IS                                   UK                         IK                                UR                                IR


    3: Screw End Conditions

    Screw Jack Top-Plate
         		 Screw Jack Clevis-end Screw Jack Thread-end Screw Jack Plain-end Screw Jack Forked Head Screw Jack Spherical Hinge
    T: Top Plate H: Clevis End R: Plain End S: Thread End U: Forked Head SH:Spherical Hinge


    4: Worm Shaft Input Types
    A: left side worm shaft input.              
    B: right side worm shaft input.             
    C: double worm shaft input.
    M1: left side motor flange direct input.                                       
    M2: right side motor flange direct input. 
    M3: left side motor flange direct input, right side worm shaft input.                  
    M4: right side motor flange direct input, left side worm shaft input.
    Screw Jack Worm Shaft Input Types
                            A                                                           B                                                       C

    Screw Jack Worm Shaft Input Types
                M1                              M2                             M3                              M4

    5: Gear Ratio:                                       
    SJB-010: 1/5, 1/20.     SJB-025: 1/6, 1/24.        SJB-050: 1/6, 1/24.      SJB-100: 1/8, 1/24        SJB-150: 1/8, 1/24            
    SJB-200: 1/8, 1/24      SJB-300: 3/32, 1/32.      SJB-500: 3/32, 1/32.     SJB-750: 3/32, 1/32.     SJB-1000: 1/12, 1/36

    6: Travel Stroke       
    No standard travel stroke, all the machine ball screw jacks’ travel strokes are processed according to customers' requirements.
    Screw Jack Travel Stroke

    7:  Accessories
    P: Protective Tube Standard
    R: Dust Cover( Bellows boot)
    Y: Hand Wheel
    Other accessories,please check below picture
    Screw Jack Accessories
    Screw Jack Accessories
    Screw Jack Accessories
     

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