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DR-C

DR-C

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, as well as torque and load capacities for various sizes.

Specifications:

Materials: Light metal profiles are used, with options for stainless steel and zinc-plated versions. Blue protection paint is applied with a thickness of 40-80 µm.
Fixation: Minimum strength class for screws is 8.8. Welding on rubber suspensions is discouraged due to potential damage.
Customization: Elements can be customized in terms of length, material, and additional features like threaded bores.

Procedures:

Installation: Elements should not be welded. For sizes DR 15-45, fixation is achieved using threaded bars or holes.
Friction Locking: Achieved with a central bolt, allowing a 360° angle range. Paint cover should be removed for optimal locking.

Torque and Load Capacities:

Detailed tables provide torque (Md), cardanic angle (Mk), radial and axial deflections, and loads for various sizes and lengths.
Values are based on static measurements and standard rubber quality 'Rubmix 10'.

Rubber Quality and Temperature Resistance:

Rubmix 10: Standard quality, highest elasticity, operational from -40°C to +80°C.
Rubmix 15: High torque values, operational from -40°C to +85°C.
Rubmix 20: Good oil resistance, operational from -30°C to +90°C.
Rubmix 40: High temperature resistance, operational from -35°C to +120°C.
Rubmix 50: Max oscillation angle ±20°, operational from -35°C to +90°C, limited oscillation frequencies.

Recommendations:

Consult ROSTA for applications involving dynamic forces and high oscillation angles.
For customized elements and installation examples, refer to pages 1.14 to 1.19.

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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