Product Description
Specification
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Material
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Mild Steel
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Brand
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J D Automation
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Model Name/Number
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SGM 2.5
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Max. Lifting Force
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25 kN
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Max. Pulling Force
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25 kN
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Lift Screw Size
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Tr30 x 6 mm
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Efficiency
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23% (H), 14% (L)
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Max Permissible Power
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1.45 kW
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Lubricant
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0.1 kg
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Worm Gear Screw Jack 2.5 TON
2.5 Ton Machine Screw Jack
All metric 2.5 Ton Machine Screw Jacks have a trapezoidal thread form. For loads of 25% to 100% of screw jack capacity, torque requirements are approximately proportional to the load. Efficiency values for standard grease lubricated worm gear box and lifting screw. All screw jacks have grease lubricated gearbox and lead screw as standard. Machine screw jacks can be fitted with a safety nut. In the event of excessive wear on the nut thread the load will be transferred from the standard nut to the safety nut.
2.5 Ton Screw Jack system, with the following characteristics:
Maximum static load capacities: 2.5 ton.
Screw details: Self-locking trapezoidal screw sizes Tr 30x6.
Gear ratios: Two options: high ratio 6:1 and slow ratio 24:1 for different linear speeds.
Stroke length: Custom stroke length, maximum 2000 mm in compression load, 2500 mm in tension load.
Basic designs: Translating screw, keyed screw, and rotating screw.
Mounting: Upright or inverted mounting, available in tension or compression loads.
Thread options: Standard with 1-start thread screw; custom 2-starts threads offer increased travel speed but require a brake or external locking device to hold position.
Screw end fittings: Top plate, clevis end, threaded end, plain end, fork head, and rod end.
Power sources: Manual operation (hand wheel and crank handle), electrically by motor drive, or both combined.
System integration: Can be used individually or combined into synchronized lifting systems using connecting shafts, bevel gearboxes, couplings, motors, gear reducers, limit switches, and pillow blocks.
Custom options: Double clevis screw jack, trunnion mount screw jack, and anti-backlash screw jack.
The materials used for the 2.5 Ton Machine Screw Jack detailed below:
Housing: High-strength Casting Housing, Ductile Iron. Custom options include Stainless Steel 304.
Input Shaft (Worm): C45 Steel with high frequency heat treatment. Custom options include Stainless Steel 304 or 316.
Lifting Screw: C45 Steel as standard. Custom options include Stainless Steel 304 or 316.
Worm Gear / Travelling Nut / Safety Nut: ZQAl9-4 (Casting aluminum bronze) as standard. Custom option is ZCuSn10Pb1 (Casting tin bronze).
Bearing: Anti-friction Ball Thrust Bearings for Worm Gear and Anti-friction Ball Bearings for Input Shaft (worm). Custom option is Stainless Steel 304.
Motor Flange Adapter: High-strength Casting Motor Adapter, Ductile Iron. Custom options include Stainless Steel 304 or 316.
Lubricants: Synthetic Grease, Extreme Pressure EP2 Lithium Grease.
FAQ's of Machine Screw Jack:
Q: How does the flanged rectangular base enhance the stability of the machine screw jack?
A: The flanged rectangular base provides a broader surface area, ensuring stable placement under heavy loads. This design minimizes the risk of tipping or shifting, especially during lifting or load adjustment in demanding environments.
Q: What are the benefits of the trapezoidal Acme thread in this screw jack?
A: The trapezoidal Acme thread offers higher load-bearing capacity and smoother motion under heavy loads. It's also more resistant to wear, ensuring consistent performance and longevity with minimal maintenance requirements.
Q: When should the machine screw jack be lubricated, and why is it necessary?
A: Periodic lubrication is recommended to maintain smooth operation and reduce friction between moving parts. Regular lubrication, as per usage intensity, extends the service life and preserves precise functionality.
Q: Where can this machine screw jack be effectively used?
A: This jack is ideal for heavy lifting, supporting, and load adjustment applications in sectors such as industrial manufacturing, mechanical services, and automotive maintenance, thanks to its robust design and high lifting capacity.
Q: What is the recommended process for operating and adjusting the jack?
A: Attach the provided detachable steel handle to the rotating mechanism. Turn the handle for 360-degree rotation to adjust the load position accurately. The load lock mechanism should be engaged for safe operation during lifting or holding.
Q: How does the anti-slip top plate contribute to safety during use?
A: The grooved, anti-slip top plate ensures that the load remains stable and resists sliding during height adjustment or support. This feature significantly reduces the risk of mishaps, especially with heavy or unbalanced loads.
Q: What are the primary benefits of choosing this machine screw jack for industrial applications?
A: The main advantages include reliable heavy-load capacity, customizable stroke length, robust corrosion resistance, and compliance with mechanical standards. This makes it an efficient, safe, and durable choice for various industrial, mechanical, and automotive tasks.
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