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DR-A

DR-A

Product catalog summary

Overview: The document provides detailed specifications and guidelines for ROSTA rubber suspension units, specifically types DR-A and DR-C. It includes dimensions, weights, and material specifications for various sizes of these units.

Specifications: The document lists various sizes of DR-A and DR-C rubber suspension units, detailing their dimensions (e.g., diameter, length), weight, and tolerances. It specifies the materials used, such as light metal profiles and steel tubes, and mentions the availability of stainless steel and zinc-plated versions.

Procedures and Recommendations: The document advises against welding on rubber suspensions due to potential damage from welding heat. It also provides guidelines for fixation using screws and threaded bars, and for friction locking of the core.

Standards and Norms: The document references DIN 1725 for seawater-resistant light metal profiles and specifies a minimum strength class of 8.8 for fixation screws. It also outlines the working temperature ranges and characteristics of different rubber qualities (Rubmix 10, 15, 20, 40, 50).

Torque and Load Data: A detailed table provides torque and load values for various nominal sizes and lengths, including deflection and load capacities for cardanic, radial, and axial movements.

Customization and Accessories: The document mentions the availability of customized elements and accessories, such as steel parts for housing and inner squares, and provides a summary of special elements with different housing lengths and inner square configurations.

Key Considerations: The document emphasizes the importance of consulting the ROSTA general catalogue for applications involving dynamic forces and high angles of oscillation. It also highlights the need for proper material selection based on environmental conditions and mechanical requirements.

Catalog excerpts

Rubber Suspension Units Type DR-A Rubber Suspension Units --------- List of torque and loads on page 1.5. Further information to customized elements and installation examples as from page 1.14.

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Selection chart for rubber suspension standard elements with Rubmix 10 Rubber Suspension Units Light metal profile, as from size 60 in steel Light metal profile Steel tube for plug-in connection Inner square for housing Steel parts DK Light metal profile DW Light metal profile Ideal for alternating motions over neutral element position. For sizes DR 15 – 45: Fixation by means of 2 to 4 persistent threaded bars (sizes DR 27 – 45 also available with threaded holes). Friction locking of the core by means of one central bolt, can be positioned in full 360° angle-range. For ideal friction locking,...

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The values stated in the below mentioned list have been measured statically and are valid for the standard rubber quality "Rubmix 10". Intermediate values can be interpolated. By applications with combined dynamic forces and high angles of oscillation please consult our ROSTA general catalogue, chapter "Technology" or contact ROSTA. Rubber Suspension Units ROSTA www.rosta.com

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Rubber Suspension Units ROSTA Rubber Suspension UnitsShort delivery time for the following special elements: Delivery summary for ROSTA rubber qualities • Elements with different length of housings and/or inner squares. • DW light metal profiles with customized bores in the flange plates (quantity and position). • Element with threaded bores in inner square: selectable for A or C inner squares, or full steel profile with required bores. Not all sizes are available in all combinations. Please contact ROSTA.

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*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.

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