JWM Series Worm Screw Jacks

Key Information:

Load Capacity: 10 kN-1000 kN as standard
Housing Material: GGG / cast steel / stainless steel
Lead Screw Options: 1. Standard 1 x Pitch 2. 2 x Pitch 3. Anti-Rotation (Keyed) 4. Stainless Steel 5. Left Hand Thread
Special custom designs available
Dimensionally Interchangeable With Other Manufacturers: Tsubaki
Delivery Time: 7-15 days
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Product Detail

Technical Data

Product Tags

INKOMA JWM (Trapezoidal Screw Type) is a versatile and economical solution designed for general-purpose applications. It offers durability, low noise, and high load-holding capacity, making it ideal for various industrial uses.

Features:

  • Economical Design: Simple and compact structure makes the JWM series a cost-effective solution.
  • Low Noise: Due to the sliding contact of the trapezoidal screw, it is well-suited for low-noise environments.
  • High Load Capacity: The trapezoidal screw thread provides a self-locking feature, allowing it to securely hold heavy loads.
  • Note: In cases of vibration or shock, a brake unit may be required to ensure load retention.
  • Stainless Steel Options: Models JWM025 through JWM300 are available in austenitic stainless steel, ideal for applications requiring rust resistance such as sluice gates, environmental equipment, and machinery in wet environments.
  • Left-Hand Screw Option: A left-hand version is available, which moves in the opposite direction of the right-hand type while maintaining the same input rotation direction. This feature is useful when operating multiple jacks with one motor or when specific jack installation requires it.

Applications:

  • Rust Prevention: Stainless steel models are suitable for environments where rust protection is crucial, such as in water gates or environmental equipment.
  • Load Retention: With its self-locking capability, it is ideal for situations requiring stable load retention without external brakes (unless exposed to shock or vibrations).

The JWM series is a reliable, quiet, and cost-effective jack, offering both left-hand and stainless steel screw options for diverse industrial needs.


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  • Size (JWM) JWM002 JWM005 JWM010 JWM025 JWM050 JWM100 JWM150 JWM200 JWM300 JWM500 JWM750 JWM1000
    Basic Capacity kN{tf} 1.96 4.9 9.8 24.5 49 98 147 196 294 490 735 980
    {0.2} {0.5} {1} {2.5} {5} {10} {15} {20} {30} {50} {75} {100}
    Outer Screw Diameter mm 12 16 20 26 40 50 55 65 85 120 130 150
    Minor Screw Diameter mm 8.8 10.8 14.8 19.7 30.5 38.4 43.4 51.3 67 102 112 127
    Screw Lead mm 3 4 4 5 8 10 10 12 16 16 16 20
    Gear Ratio H Speed 5 5 5 6 6 8 8 8 10 2/3 10 2/3 10 2/3 12
    L Speed 20 20 20 24 24 24 24 24 32 32 32 36
    Overall Efficiency % H Speed 26 26 21 21 22 22 20 20 19 15 13 13
    L Speed 15 15 12 12 14 15 14 13 11 10 8 8
    Max. Allowable
    Input Capacity
    kW H Speed 0.16 0.39 0.49 1 2 2.8 3.1 5 8.4 13.4 14.4 21.4
    L Speed 0.08 0.18 0.36 0.46 0.63 1.4 2.2 3.2 4.6 5.7 7.2 9.4
    Tare Drag Torque N・m
    {kgf・m}
    0.11 0.11 0.29 0.62 1.4 2 2.6 3.9 9.8 19.6 29.4 39.2
    {0.011} {0.011} {0.03} {0.063} {0.14} {0.2} {0.27} {0.4} {1} {2} {3} {4}
    Allowable Input Torque N・m
    {kgf・m}
    9.8 9.8 19.6 49 153.9 292 292 292 735 1372 1764 2450
    {1} {1} {2} {5} {15.7} {29.8} {29.8} {29.8} {75} {140} {180} {250}
    Required Input Torque
    for Basic Capacity
    N・m
    {kgf・m}
    H Speed 0.83 2.5 6.2 16.1 48.7 90.7 149 238.1 400.1 856 1380.5 2040.9
    {0.08} {0.26} {0.64} {1.6} {5.0} {9.2} {15.2} {24.3} {40.8} {87.3} {140.7} {208.0}
    L Speed 0.42 1.1 2.9 7.4 20 45.3 72.3 124 244 453.3 761.3 1278.3
    {0.04} {0.12} {0.30} {0.75} {2.0} {4.6} {7.4} {12.6} {24.9} {46.2} {77.6} {130.3}
    Screw Movement/
    per Revolution of Input Shaft
    mm H Speed 0.6 0.8 0.8 0.83 1.33 1.25 1.25 1.5 1.5 1.5 1.5 1.67
    L Speed 0.15 0.2 0.2 0.21 0.33 0.42 0.42 0.5 0.5 0.5 0.5 0.56
    Max. Input rpm r/min H Speed 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800
    L Speed 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800
    Max. Input rpm
    for Basic Capacity
    r/min H Speed 1800 1500 750 600 400 300 200 200 200 150 100 100
    L Speed 1800 1500 1200 600 300 300 290 250 180 120 90 70
    Screw Shaft Rotational
    Torque for Basic Capacity
    N・m
    {kgf・m}
    2.6 8.6 20.1 65.1 201.5 503.6 813.2 1287.7 2531.9 5551.3 8921.8 13878.3
    {0.26} {0.87} {2.1} {6.6} {20.5} {51.3} {82.9} {131.3} {258.1} {565.9} {909.5} {1414.7}