Cubic Screw Jacks

Cubic Screw Jacks
1 / 98 PagesView full catalog

Cubic Screw Jacks

Product catalog summary
Introduction
The document provides an overview of standard cubic screw jacks, specifically the MJ and BJ series, designed to convert rotary motion into linear motion efficiently. The cubic design allows for easy integration and flexibility for additional components.
Specifications
The screw jacks are available in 11 sizes, from 0.25 t to 50 t, with options for larger sizes. They come in basic and travelling nut versions, with upright or inverted spindles. Standard spindles are made from C35 or C45 materials, with options for ball screws and precision rolled trapezoidal spindles.
Installation Positions
Various installation positions and configurations are outlined, with diagrams provided. The cubic design offers flexibility in mounting options.
Drive Diagrams Examples
Examples illustrate different configurations and the use of bevel gearboxes, emphasizing ideal torque distribution and the necessity of support bearings.
Screw Jacks
Details include maximum static load, tensile force, spindle types, power, and efficiency ratios. A type overview, order codes, and details on basic and travelling nut versions are provided.
Materials and Construction
Housing materials vary by size, with smaller sizes using aluminum and larger sizes using cast iron or ductile graphite iron. Stainless steel housings are available upon request. The screw jacks are grease-filled as standard, with other lubrication options available.
Express Services
Express service options with surcharges for expedited delivery are outlined, with conditions and examples for calculating surcharges.
Conclusion
The document serves as a technical guide for selecting and implementing cubic screw jacks, emphasizing quality service, technical advice, and value for money.
Components and Accessories
Detailed specifications and descriptions of components and accessories for screw jacks, focusing on safety features, operational enhancements, and customization options. Key sections include safety nuts, limit switches, trunnion adaptors, swivel feet, and handwheels.
Safety Nut (SFM)
Enhances operational safety, allowing for visual wear monitoring and load absorption in case of thread failure.
Limit Switches (ES)
Used for automatic control of stroke action, available in mechanical and inductive versions.
Trunnion Adaptor (KP)
Allows swivelling and tipping movements, enhancing functionality.
Swivel Feet (SFK)
Facilitates movement, constructed from metal-plastic composite materials.
Handwheels (HR)
Available in various sizes, with custom sizes upon request.
Additional Accessories
Includes gimbal mounts, nut trunnion adaptors, flexible shafts, and motor mounting options.
Specifications for Bevel Gearboxes
Technical specifications for type K bevel gearboxes, including shaft tolerances, mounting holes, and materials.
Procedures
Dimensions and specifications for gearbox models, installation, and maintenance guidelines for spiral protective sleeves.
Materials and Design
Materials listed for different components, with design options including polygonal folding and round sewn configurations.
Temperature and Resistance
Temperature ranges and material resistance to dust, water, oil, chemicals, sparks, and hot chips.
Standards and Recommendations
Importance of specifying installation positions for spiral protective sleeves and regular maintenance.
Encoder Advantages
Highly integrated encoder for movement capture, offering functionalities like limit switch operation and motion monitoring.
Electrical Specifications
Specifications for preset counters, including power output, input power, and relay outputs.
Compliance and Standards
Conforms to EC Directive with standards for use in explosive zones.
Temperature and Explosion Groups
Classification of gases and vapors into explosion groups and temperature classes.
Ignition Protection Types
Types include vapour-restraining encapsulation and intrinsic safety.
Calculations
Includes accuracy, permissible buckling force, power tables, and critical spindle speed.
Material and Safety Considerations
Permissible surface pressure varies by material, with safety factors recommended for irregular operations.
Tooth Profile Play
Initial tooth profile play and its changes over time due to wear.
Axial and Lateral Play
Axial play affects positioning accuracy, with options for reduced play available.
Thread Accuracy
Spindle types adhere to specific DIN standards.
Buckling Diagrams
Used for preselecting spindles, determining permissible buckling forces.
Power Tables
Detailed power tables for jack elements with TR spindles.
Radial Force
Drive torque generates radial force, with permissible values depending on load and size.
Ballscrew Nuts and Components
Technical specifications for ballscrew nuts, including dimensions and configurations.
Components and Accessories
Outlines components and accessories associated with ballscrew nuts.
Installation and Operating Conditions
Guidelines for installation and operating conditions, emphasizing safety regulations.
Checklist and Design Sheet
Checklist for ensuring all necessary components and conditions are considered before installation.
Contact Information
Contact details for Grob GmbH Antriebstechnik for further inquiries or catalog requests.
See more

Catalog excerpts

Cubic Screw Jacks-1

Hubgetriebe kubisch Cubic Screw Jacks

 Open the catalog to page 1
Cubic Screw Jacks-2

Product Overview Seite Page 1. Einleitung 1. Introduction 2. Einbaulagen 2. Installation positions 3. Antriebsschemata Beispiele 3. Drive diagrams examples 4. Hubgetriebe 4. Screw jacks 5. Standardspindelköpfe 5. Standard spindle ends 6. Anbauteile der Hubgetriebe 6. Accessories of the screw jacks

 Open the catalog to page 2
Cubic Screw Jacks-3

Product Overview Seite Page 8. Hubgetriebe nach Richtlinie 94/9/EG (Atex) 8. Screw jacks according to directive 94/9/EC (Atex) 12. Auslegungsbogen 12. Design sheet

 Open the catalog to page 3
Cubic Screw Jacks-4

Standardhubgetriebe der Baureihe „MJ“ und „BJ“ mit kubischer Gehäuseform vereinigen die Idee der Umsetzung einer Drehbewegung in eine Axialbewegung mit dem ästhetischen Äußeren des kubischen Gehäusewürfels zu einer funktionellen Einheit, wobei der konstruktive Grundgedanke einer einfachen und robusten Hubgetriebekonstruktion optimal verwirklicht wurde. Standard screw jacks, Type „MJ“ and „BJ“ optimise the concept of converting a rotary movement into a linear movement. As well as the cubic housing form being esthetically pleasing, the modular design of the screw jack is compact and robust. Die...

 Open the catalog to page 4
Cubic Screw Jacks-5

Der Katalog Standardhubgetriebe der Baureihe „MJ“ und „BJ“ beinhaltet folgende Einzelheiten: Mögliche Hubgetriebeausführungen sind Grundausführung und Laufmutterausführung, sowie verschiedene Antriebsschemen. The Catalogue Standard Screw Jacks, Type „MJ“ and „BJ“ contains the following: Possible screw jack versions are basic version and travelling nut version, as well as drive arrangement examples. Unser Grundsatz: Unseren Kunden mit qualitativem Service und umfassender Beratung für kundenspezifische Lösungen ein optimales Preis-Leistungsverhältnis bieten! Our objective: To offer a quality service...

 Open the catalog to page 5
Cubic Screw Jacks-6

Express service Die Fa. GROB reserviert für eilige Kunden eine gewisse Fertigungskapazität. Our company reserves production capacity for urgent requirements . Damit sind wir bei vielen Produktionen in der Lage kurzfristig auf Ihre Wünsche einzugehen. Dieser Service ist nicht kostenlos. We are able to deliver many products at short notice. This service is however not free of charge. Bei der Inanspruchnahme des Eildienstes empfehlen wir immer, dass der Versand durch den Besteller geregelt wird. Unterbleibt dies, erfolgt ein normaler Versand zu Lasten des Bestellers von uns. Für die Inanspruchnahme...

 Open the catalog to page 6
Cubic Screw Jacks-7

„F“ oben „F“ top „A“ links „A“ left

 Open the catalog to page 7
Cubic Screw Jacks-8

3. Antriebsschemata Beispiele 3. Drive diagrams examples Schema 3 Example 3 Schema 4 Example 4 Verteilergetriebe D0 Bevel gearbox D0 Nur Übersetzung 1:1 möglich Ratio 1:1 possible only Verteilergetriebe D0 Bevel gearbox D0 Nur Übersetzung 1:1 möglich Ratio 1:1 possible only

 Open the catalog to page 8
Cubic Screw Jacks-9

3. Antriebsschemata Beispiele 3. Drive diagrams examples = Kegelradposition/Position of bevel gear Schema 8 Example 8 Verteilergetriebe C0 Bevel gearbox C0 Übersetzung beliebig Any ratio Verteilergetriebe D0 Bevel gearbox D0 Schema 12 Example 12 Ideale Drehmomentverteilung Ideal torque distribution mit Motorglocke und Kupplung sowie Motor in Bauform B5 oder B14 with motor adaptor and coupling as well as motor B5 or B14 face mounted Verteilergetriebe D0 Bevel gearbox D0 Verteilergetriebe C0 Bevel gearbox C0 Stehlager nur erforderlich beim Überschreiten der kritischen Drehzahl oder bei „kritischen...

 Open the catalog to page 9
Cubic Screw Jacks-10

4. Hubgetriebe 4. Screw jacks Seite Page 4.1 Typenübersicht 4.1 Type overview 4.2 Bestellcode 4.2 Order code 4.3 Hubgetriebe Grundausführung (G) 4.3 Screw jack basic version (G) 4.4 Hubgetriebe Laufmutterausführung (LM) 4.4 Screw jack travelling nut version (LM)

 Open the catalog to page 10
Cubic Screw Jacks-11

4. Hubgetriebe 4. Screw jacks

 Open the catalog to page 11
Cubic Screw Jacks-12

4.1 Typenübersicht 4.1 Type overview Übersetzung L Hub je Umdrehung bei Übersetzung L [mm/U] Gesamtwirkungsgrad Übersetzung L Spindelwirkungsgrad Drehmoment-Leistung-Drehzahl bei 20% ED/Std. u. 20°C 9.3 Leistungstabellen (Hubgetriebe mit TR-Spindel)“ auf Seite 78 Antriebsdrehmoment bei max. statischer Belastung N Antriebsdrehmoment bei max. statischer Belastung L max. zulässiges Drehmoment an der Antriebswelle max. zulässige Spindellänge bei Druckbelastung 9.2 Zulässige Knickkraft“ auf Seite 75 Gewicht ohne Spindelhub und Schutzrohr * auch in Übersetzung 40:1 lieferbar (Gesamt-Wirkungsgrad =...

 Open the catalog to page 12
Cubic Screw Jacks-13

4.1 Typenübersicht 4.1 Type overview Max lifting force Max tensile force Spindle TR 1) Max power N Ratio normal [mm/U] N Stroke per revolution for ratio N Total efficiency for ratio [Nm] N Idling torque L Ratio slow [mm/U] L Stroke per revolution for ratio L Total efficiency for ratio [Nm] Spindle efficiency Torque, power and speed at 20% duty cycle/hour & 20°C „9.3 Power tables (jack elements with TR spindles)“ on page 78 N Drive torque at max lifting force L Drive torque at max lifting force Max permissible torque at worm shaft Max permissible spindle length for compressive load „9.2 Zulässige...

 Open the catalog to page 13
Cubic Screw Jacks-14

Baugröße MJ0, MJ1, MJ2, MJ3, MJ4, MJ5, BJ1, BJ2, BJ3, BJ4, BJ5 Bauart Grundausführung = Grundausführung mit normaler Übersetzung GN = Grundausführung mit langsamer Übersetzung GL Einbaulage 1F, 2F, 3F, 4F, 5F, 6F 1E, 2E, 3E, 4E, 5E, 6E Spindel KGT2005 = Kugelgewindetrieb mit Bezeichnung Trapezgewindespindel, wenn vom Standard TR16x4 = abweichend (z.B.: TR18x8P4) = Grundausführung mit Verdrehsicherung VS der Spindel per Nut und Feder (Achtung: Bei Einsatz von FB und SF ändert sich Maß T) Spindelenden Grundausführung = Zapfen Z = Flanschplatte FP = Gewindeende GE GK = Gelenkstück KGK = Kugelgelenkkopf...

 Open the catalog to page 14
Cubic Screw Jacks-15

Baugröße MJ0, MJ1, MJ2, MJ3, MJ4, MJ5, BJ1, BJ2, BJ3, BJ4, BJ5 Bauart Laufmutterausführung LMN = Laufmutterausführung mit normal Übersetzung = Laufmutterausführung mit langsamer Übersetzung LML Einbaulage 1F, 2F, 3F, 4F, 5F, 6F 1E, 2E, 3E, 4E, 5E, 6E Spindel KGT2005 = Kugelgewindetrieb mit Bezeichnung Trapezgewindespindel, wenn TR16x4 = abweichend (z.B.: TR18x8P4) vom Standard Hub in mm angeben (4-stellig) Spindelenden Laufmutterausführung = Lagerzapfen Z = Flanschplatte (mit Lager) FPL SE = Sonderende (nach Kundenwunsch) Anbauteile ”A” = Anbauseite des Motors ”B” = Ausdrehsicherung an der Spindel...

 Open the catalog to page 15

All GROB GmbH Antriebstechnik catalogs and technical brochures

  1. Linear Actuator

    76  Pages

  2. Screw drives

    72  Pages

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.