Multiple Screw Jack Configurations

Product catalog summary

Multiple Screw Jack Configurations

1. Total Input Power Calculation: The total input power for screw jack systems is calculated using the formula: Ps = (Input Power per Screw Jack * Number of Screw Jacks) / (Arrangement Efficiency * Gearbox Efficiency). The arrangement efficiency varies with the number of screw jacks, ranging from 95% for two jacks to 80% for eight jacks. Gearbox efficiency is the product of bevel gearbox efficiency (typically 95%) and reduction gearbox efficiency, which should be consulted or assumed to be 100% if absent.

2. Torque Transmission: For screw jacks connected in-line, the worm shaft can transmit up to three times the torque of a single screw jack at maximum capacity, except for the 1820 unit, which can transmit 1.5 times the torque.

3. Typical System Configurations: Common configurations include 'H' and 'U' systems, which consist of screw jacks, motors, bevel gearboxes, reduction gearboxes, drive shafts, couplings, and plummer blocks. Bevel gearboxes allow for directional drive rotation selection and are available in 2, 3, and 4-way drive types.

4. Other System Configurations: Additional configurations include 'E', '2U', and 'TF' systems, each designed for specific industrial applications.

5. Company Overview: Power Jacks is a leading manufacturer of industrial lifting, positioning, material handling, and power transmission equipment, serving various sectors globally, including nuclear, water, oil & gas, and automotive industries.

Catalog excerpts

MULTIPLE SCREW JACK CONFIGURATIONS Typical System Configurations

Open the catalog to page 1

Multiple Screw Jack Configurations Multiple Screw Jack Configurations Total Input Power for Screw Jack Systems (kW), Ps: Input Power per Screw Jack (kW) * Number of Screw jacks Arrangement Efficiency * Gearbox Efficiency Number of Screw jacks in Arrangement Arrangement Efficiency (%) Gearbox Efficiency = Bevel Gearbox Efficiency * Reduction Gearbox Efficiency Bevel Gearbox Efficiency = 95% Typical (refer to 4.0.). Reduction Gearbox Efficiency = Consult unit details, if no reduction gearbox present assume efficiency of 100% Note For Screw Jacks connected in-line the worm shaft can transmit up...

Open the catalog to page 2

Multiple Screw Jack Configurations Other System Configurations

Open the catalog to page 3

PRECISION SCREW JACKS . ELECTRIC LINEAR ACTUATORS . PLANETARY ROLLER SCREWS . SPIRAL BEVEL GEARBOXES . Power Jacks are an industry leader in the manufacture of quality industrial lifting, positioning,material handling and power transmission equipment. The products are supplied globally to most industry sectors including nuclear, water, oil & gas, chemical, defence, steel, aluminium, automotive, and others. DESIGN WITH POWER Head Office South Harbour Road Fraserburgh Aberdeenshire AB43 9BZ Scotland (UK) FM 23810 Manufactured in Great Britain

Open the catalog to page 4

Multiple Screw Jack Configurations

Multiple Screw Jack Configurations

Catalog excerpts

All Power Jacks catalogs and technical brochures