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Rubber Buffers / Cellular Buffers Program 0170 / 0180

Rubber Buffers / Cellular Buffers Program 0170 / 0180
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Rubber Buffers / Cellular Buffers Program 0170 / 0180

Product catalog summary
General Information
Rubber and cellular buffers are designed to absorb energy, primarily used at the end of crane runways to prevent damage. The emphasis is on energy absorption rather than dimensions. These buffers are not suitable for vibration damping or support roles. The document highlights safety, quality, and expertise in buffer manufacturing.
Applications
Buffers are used for travel limitation, energy absorption, end stops, and end position dampening. Rubber buffers provide an economical solution for most technical needs, while cellular buffers offer excellent energy absorption.
Rubber Buffers (Program 0170)
Made from cost-effective materials, rubber buffers are suitable for crane and conveyor systems, characterized by high elasticity and mechanical load capacity, but not resistant to certain chemicals.
Cellular Buffers (Program 0180)
These buffers offer high energy absorption and are maintenance-free, suitable for applications requiring long compression lengths and good deceleration values.
Project Planning
Key steps include determining effective mass and impact velocity, calculating energy distribution, selecting buffer material and geometry, and calculating compression length and resulting forces. Load-length curves help determine bumper characteristics.
Buffer Loads and Arrangements
Loads must be centered and perpendicular to the bumper base plate. Mounting surfaces should be level and parallel to avoid lateral forces. Specific guidelines are provided for buffer arrangements and load calculations.
Quality and Safety
Conductix-Wampfler offers standard rubber qualities with specific characteristics like resilience and aging resistance. Special qualities are available upon request. Fall protection is integrated into cellular bumpers for safety.
Basic Calculation Formulas
Formulas are provided for calculating energy absorption, deceleration, and buffer forces, considering factors like mass, velocity, and compression length.
Material Specifications
The document details various rubber materials used in manufacturing, including their properties and international designations. Key materials include Natural Rubber (NR), Chloroprene Rubber (CR), Styrene-Butadiene Rubber (SBR), Ethylene-Propylene-Diene Monomer (EPDM), Nitrile-Butadiene Rubber (NBR), and Silicone Rubber (VMQ). Properties are rated from very good (+++) to insufficient (---).
Product Specifications
The document lists various rubber buffers and rubber-metal elements, detailing their dimensions, weight, and mechanical properties. Products are categorized by design, such as those with steel base plates, threaded bolts, or internal threads.
Application and Usage
Rubber-metal elements are used for vibration-free mounting of machinery, providing insulation against mechanical vibrations and impact sound. They are suitable for machine frames, conveyor systems, and machine tools. The document emphasizes selecting the appropriate material and hardness for specific applications.
Standards and Tolerances
The document references ISO 3302-1M for tolerances of rubber parts, ensuring quality and consistency in manufacturing. Special qualities and constructions are available upon request.
Overview
This document provides detailed specifications and guidelines for rubber-metal and cellular buffers used in industrial applications, including part numbers, dimensions, material properties, and application recommendations.
Specifications
  • Rubber-Metal Elements: Includes cylindrical buffers with two internal threads, threaded bolts, and one internal thread. Specifications cover dimensions such as diameter (d1), height (h1), thread size (d2), and minimum order quantities.
  • Cellular Buffers: Made from cellular polyurethane elastomer, these buffers have high absorption capacity and are resistant to various environmental factors.
Material Properties
  • Cellular buffers are resistant to oils, greases, ozone, UV radiation, and aging, but not to strong acids and leaches.
  • Operating temperature ranges from -20°C to +80°C, with temporary peaks up to +100°C.
Application Examples
  • Used in cranes, transfer cars, smelter machines, handling technology, and conveyor systems.
Installation and Maintenance
  • Buffers should be mounted on flat, rigid surfaces with a mounting area at least 1.5 times the buffer diameter.
  • Regular visual checks for damage are recommended, and buffers should be replaced every five years in safety-critical applications.
FAQs
  • Discusses buffer hardness, energy absorption related to temperature, and consequences of overdimensioning buffers.
  • Provides guidelines for buffer arrangement and requirements for counter-pressure surfaces.
Specifications and Design
Rubber-metal elements, specifically end stop buffers with diameters up to 50 mm, are primarily considered mounting parts. Practical trials and mounting dimensions guide their design due to variability in compression length and energy absorption.
Production and Delivery
The vulcanization process in rubber buffer production leads to quantity fluctuations, making under or overdeliveries of up to 10% standard practice.
Material Characteristics
New cellular buffers may darken over time due to light exposure, but this does not affect performance.
Load Diagrams and Calculations
Load diagrams for precise buffer size calculations are available on the Conductix website.
Warranty and Liability
Conductix-Wampfler assumes warranty and liability claims only after written confirmation.
Initial Operation and Maintenance
Initial commissioning should be conducted by trained personnel, including test operations and accident simulations. Regular maintenance and inspections are recommended.
Customer Services
Conductix-Wampfler offers services from initial design to long-term service contracts, with over 900 standard products and 20,000 available for direct ordering online.
Project Planning and Installation
Project planning involves coordinating application parameters with customers, selecting suitable buffer systems, and creating layouts. Complete system mounting and installation are provided.
Product Range
Conductix-Wampfler offers a wide range of products including jib booms, conductor rails, cable reels, festoon systems, inductive power transfer systems, slip ring assemblies, energy guiding chains, and conveyor systems.
Mission Statement
Conductix-Wampfler is committed to providing reliable energy and data transmission systems to ensure continuous operation.
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Catalog excerpts

Rubber Buffers / Cellular Buffers Program 0170 / 0180-1

Rubber Buffers / Cellular Buffers Program 0170 / 0180

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-2

Performance tables of our Buffers (KAT0170 and KAT0180 Load Diagrams) can be downloaded from: www.conductix.de/en Part numbers marked with * are part of our standard range and are available from stock. Delivery times for other part numbers can be provided by request.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-3

Contents Rubber Buffers / Cellular Buffers – General Information Rubber Buffers Rubber-Metal Elements Cellular Buffers Rubber Buffers / Cellular Buffers FAQs

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-4

Rubber Buffers / Cellular Buffers Program 0170 / 0180 General Information Stop buffers are essentially damping units that absorb energy, for example at the end of a crane runway, to prevent damage and allow for smaller structural dimensions. In general, “energy before geometry” applies to buffers because load diagrams, precisely defined characteristic curves, physical dimensions, and mathematical formulae are used when dimensioning the buffers. Geometrical dimensions are of secondary importance here. Stop bumpers are not to be used as vibration dampers or supports. Safety, quality, and know-how...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-5

Rubber Buffers / Cellular Buffers Program 0170 / 0180 Fall Protection Accidental falling of the stop bumpers is prevented by safeguard measures – so-called “fall protection” – which provides comprehensive safety for man and machine. Cellular bumpers with integrated safety rope and form-fitting, foam-covered cap are used for installation heights > 3 m. Fall protection is a standard feature for all cellular bumpers. The reliable vulcanization process, permanently joining the fastening element to the rubber bumper body, adds to the overall safety of the bumpers. We take special care when choosing...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-6

• Determine the effective mass and impact velocity • Calculate the basic energy formula: W = m x v2 • Determine the energy distribution for each single buffer • Select the needed buffer (cellular or rubber material), depending on general requirements • Select the buffer geometry according to max. buffer energy Wmax from the tables on pages 11, 26, and 27 depending on the bumper type. • Calculate the expected compression length (from diagram - see catalogs “Load Diagrams - Rubber Bumpers” and “Load Diagrams - Cellular Bumpers” on www.conductix.com) • Calculate the resulting reacting force • Check...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-7

• Mass against mass • Driven mass against limit stop Buffer force-travel diagram • Free fall (this formula does not apply for elevators) • Calculation of buffers for cranes Oscillating masses not taken into account Centrifugal moment of rotating parts must be taken into account Velocity must be reduced according to DIN 15018: v = 100% rated velocity on trolleys v = 85% rated velocity on cranes v = 70% rated velocity on cranes with brakes • Formulas for calculating the deceleration F: Maximum buffer force (kN) mKr: Mass crane without trolley (kg) m1/m2: Mass body 1 / body 2 (kg)...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-9

Rubber Buffers Program 0170 General Information Natural caoutchouc rubbers are characterized by their very high elasticity, notch impact resistance, and good abrasion resistance. Among all elastomers, these have the highest mechanical and dynamic load capacities. Natural caoutchouc is not resistant to electrolytic liquids, aliphatic, aromatic hydrocarbons, or chlorinated hydrocarbons. Oil and natural gas are the basic materials for synthetic caoutchouc. For many years, this has been a substitute material for natural caoutchouc, but today synthetic caoutchouc is increasingly used as first choice...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-10

N-Quality • Resilient and tear-resistant • Aging resistant • Material incompressible • Operating temperature: -30 to +70°C* • Hardness: 70 Shore A +/-5 S-Quality (by request only) • Seawater and ozone-resistant, weather-proof, oil and to a large extent acid and aging resistant • Operating temperature: -30 to +80°C • Hardness: 70 Shore A +/-5 Special qualities and special constructions by request! * Characteristics may change depending on ambient temperature Quality degrees of the individual material properties (depending on interactions and exposure time): +++ = very good; ++ = good; + = satisfactory;...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-11

* Standard range 1) = Packing Unit = Minimum Order Qty. 2) = Conical form, see drawing on page 13 Standard range 1) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-12

Other dimensions available by request! 1) = Packing Unit = Minimum Order Qty. Wheel Buffers with Mounting Holes or Threaded Bolts 45 1) = Packing Unit = Minimum Order Qty. 12

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-14

* Standard range 1) = Packing Unit = Minimum Order Qty. Tolerances of the rubber parts according to ISO 3302-1M3 * Standard range

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-15

* Standard range 1) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-16

* Standard range 1) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-17

General Information Rubber-metal elements are used as flexible mechanical fastenings for vibration-free mounting of light to middle-weight machinery. These elements are usually defined geometrically and by hardness and have no determined energy absorption. Application Examples • Machine frames in material handling • Frames with drive and control units in general engineering • Conveyor systems • Machine tools Example Part Number Selection Chart: Materials Selection Chart: Shore Hardness Buffer type- Reference number:- screw length l / thread depth t [mm] Reference number: material Reference...

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-18

Quality degrees of the individual material properties (depending on interactions and exposure time): +++ = very good; ++ = good; + = satisfactory; o = sufficient; -- = deficient; --- = insufficient Tolerances of the rubber parts according to ISO 3302-1M 11 Special qualities available only in large order quantities - please contact us!

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-19

1) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-20

1) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-21

i) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-22

1) = Packing Unit = Minimum Order Qty.

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Rubber Buffers / Cellular Buffers Program 0170 / 0180-23

i) = Packing Unit = Minimum Order Qty.

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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.