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MA Series Worm Screw Jacks

MA Series Worm Screw Jacks Featured Image
  • MA Series Worm Screw Jacks
  • MA Series Worm Screw Jacks
  • MA Series Worm Screw Jacks
  • MA Series Worm Screw Jacks
  • MA Series Worm Screw Jacks
  • MA Series Worm Screw Jacks

Key Information:

Load Capacity: 5 kN-350 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 6. Ball screw
Special custom designs available
Dimensionally Interchangeable With Other Manufacturers: SERVOMECH
Delivery Time: 7-15 days
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Product Detail

Technical Data

Product Tags

Features (Model A – Travelling Screw):

  • Intermittent Duty Cycle: Ideal for applications where the screw jack operates intermittently.
  • Lubrication: Long-life synthetic grease lubricated worm gear ensures durability.
  • Precision Worm Gearbox: ZI involute profile for high precision.
  • Gearbox Ratios: From 1:4 to 1:36.
  • Monobloc Housing: Compact and robust, designed for strength and durability.
  • Input Speed: Up to 1500 rpm.
  • Screw Type: Acme screw drive with 1 or 2 starts.
  • Available Sizes: 14 sizes, with screw diameters ranging from Ø18 mm to Ø160 mm.
  • Load Capacity: From 5 kN to 1000 kN.

Accessories (Model A):

  • Stroke Length Limit Device: Magnetic or inductive proximity sensors for stroke control.
  • Position Control: Incremental or absolute encoders available for precise positioning.
  • Motor Compatibility: Prepared for IEC standard motors, AC/DC motors, and brushless servomotors.
  • Housing Options: Threaded tapped holes or through holes for versatile mounting.
  • Safety Features: Stop nut to prevent over-travel, protective bellows, anti-turn device, and safety nut.
  • Special Options: Stainless steel attachments (AISI 303, 304, 316), temperature-specific lubricants, and food industry-safe lubricants.

Features (Model B – Travelling Nut):

  • Intermittent Duty Cycle: Also suitable for intermittent operation.
  • Lubrication: Long-lasting synthetic grease for worm gear lubrication.
  • Precision Gearbox: High accuracy with ZI involute profile.
  • Gearbox Ratios: From 1:4 to 1:36.
  • Housing: Compact, robust design with monobloc construction.
  • Input Speed: Up to 1500 rpm.
  • Screw Type: Acme screw drive with 1 or 2 starts, but uses a travelling nut design.
  • Available Sizes: 14 standard sizes, Ø18 mm to Ø160 mm acme screws.
  • Load Capacity: From 5 kN to 1000 kN.

Accessories (Model B):

  • Position Control: Incremental or absolute encoders for precision.
  • Motor Mounting: Compatible with IEC standard motors, AC/DC, and brushless servomotors.
  • Housing Options: Threaded tapped holes or through holes for mounting flexibility.
  • Safety Features: Protective bellows, trunnion mount, safety nut, and acme thread wear-level check.
  • Special Options: Stainless steel attachments, special lubricants for high/low temperatures, and food industry-compatible lubricants.

Common Applications:

These Acme screw jacks are ideal for applications in harsh environments, such as water gates, paper-making machines, and industries requiring high reliability and performance.

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    • SIZE (MA) – Trapezoidal-thread spindle MA5 MA10 MA25 MA50 MA80 MA100 MA200 MA350
    Load capacity [kN], (push-pull) 5 10 25 50 80 100 200 350
    1-start acme screw Tr18×4 Tr22×5 Tr30×6 Tr40×7 Tr55×9 Tr60×12 Tr70×12 Tr100×16
    Worm gear centre distance [mm] 30 40 50 63 63 80 100 125
    Available ratio RV 1:4(4:16) 1:5(4:20) 1:6(4:24) 1:7(4:28) 1:7(4:28) 1:8(4:32) 1:8(4:32) 3:32
    RN 1:16(2:32) 1:20 1:18(2:36) 1:14(2:28) 1:14(2:28) 1:24 1:24 1:16(2:32)
    RL 1:24 1:25 1:24 1:28 1:28 1:32 1:32 1:32
    Stroke [mm] for1 input shaft revolution Ratio RV1 1 1 1 1 1.28 1.5 1.5 1.5
    RN1 0.25 0.25 0.33 0.5 0.64 0.5 0.5 1
    RL1 0.17 0.2 0.25 0.25 0.32 0.38 0.38 0.5
    Starting efficiency Ratio RV1 0.21 0.22 0.2 0.18 0.18 0.2 0.17 0.16
    RN1 0.16 0.15 0.16 0.15 0.15 0.13 0.12 0.14
    RL1 0.13 0.14 0.13 0.11 0.11 0.12 0.11 0.1
    Running efficiency at 3000 rpm Ratio RV1 0.4 0.41 0.38 0.37 0.39 0.41 0.38 0.39
    RN1 0.31 0.3 0.3 0.32 0.33 0.32 0.31 0.34
    RL1 0.27 0.28 0.28 0.26 0.27 0.3 0.28 0.29
    Starting torque on input shaft at max. load [Nm] Ratio RV1 3.8 7.2 19.9 44.1 77 120 282 525
    RN1 1.2 2.6 8.3 24.8 47 62 133 400
    RL1 1 2.3 7.6 18 34 50 109 280
    Max. permissible operating power [kW] Ratio RV1 0.4 0.6 1.2 2.4 2.5 3 4.5 8
    RN1 0.2 0.3 0.7 1.7 1.8 2.6 4 7
    RL1 0.17 0.25 0.6 1.2 1.2 2.3 3.8 6.8
    Reactive torque on acme screw (nut) required at max. load [Nm] 8 20 65 165 368 525 1180 2880
    Housing material casting in aluminium alloy casting in spheroidal graphite iron
    EN 1706-AC-AlSi10Mg T6 EN-GJS-500-7 (UNI EN 1563)
    Mass of screw jack without acme screw [kg] 2.2 4.3 13 26 26 48 75 145
    Mass for every 100mm of acme screw [kg] 0.16 0.23 0.45 0.8 1.6 1.8 2.5 5.2

     

     

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