Screw Jack
ActionJac™ Worm Gear Screw Jack systems are ruggedly designed and produced in standard models with load handling capacities from 1/4 ton to 100 tons with no "standard" travel lengths (built to specification). The housings are made of ductile iron and proportioned to support the rated capacity of the unit. Use individually or in multiple arrangements.
An alloy steel worm which drives a high strength bronze worm gear (drive sleeve). The worm shaft is supported on anti-friction tapered roller bearings with external seals provided to prevent loss of lubrication . The drive sleeve is supported on anti-friction tapered roller or ball thrust bearings. Rotation of the drive sleeve causes the lifting screw to translate or rotate, depending upon jack configuration.
Available Finishes: Standard Nook Epoxy, Nook Outdoor, Nook Marine (Can also paint to customer specification)
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- Improved speed, force, duty cycle, acceleration
- Longer life cycle (low friction)
- Requires less motor power
- Greater positioning accuracy
- Higher static load and lower dynamic load
- Low noise (no rolling components)
- Ideal for vertical and light loads
- Pre-loaded nut assembly reduces backlash
- Safe for static loads
- Lower cost
- 20:1 and 32:1 ratios are self locking
- Ideal for demanding environments where corrosion resistance is required
- All external components are 300 series Stainless Steel materials
- Capacities range from 1,300 to 23,000 pounds
- Smoother operation, higher efficiency, increased speeds and duty cycle
- Increased mounting versatility (international standards)
- High quality, corrosion-resistant aluminum housings
- Directly mount to motors/gear reducers
- High lifting speed, greater duty cycle, and low backlash
- Increased mounting versatility (meet international standards)
- High quality, corrosion-resistant aluminum housings
- Directly mount to motors/gear reducers
Nook Industries offers many machine screw jack accessories to accommodate the linear motion needs of any application.