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MOLDED DIMENSIONS, LLC
Custom Molder of Rubber and Cast Polyurethane Components.

Pedals – MDI Products in Action

Posted on April 13, 2018 by The Molded Dimensions Team

To the left is an example of a custom molded foot pedal used in large excavation equipment. The chemically-bonded urethane pad exhibits wear resistance, making it look better and last longer despite highly abrasive environments.

 

  • Material Compound: Most pedals are made with 80 Durometer Shore “D” Black Pentathane®. Hardness, as applied to elastomers, is defined as the relative resistance of a surface to indention by an indenter of specified dimension under a specified load. The most commonly used measuring instrument is a durometer. Numerical hardness values are derived from the depth of penetration. The harder the sample, the further it will push back the indenter point and the higher the readings. On the durometer A scale, 0 is very soft, and 100 is very hard. Values are usually read immediately after firm contact has been established. The hardness range of elastomers is so broad that a single durometer cannot indicate practical measurable differences of hardness. For this reason durometers are available in more than one scale model, (eg., A and D scale durometers). The A scale durometer is widely used throughout the rubber industry. The durometer D model, which has a stiffer spring and a more pointed indenter, is used to measure the hardness of hard rubbers.
  • Special characteristics: abrasion and cracking resistance helps keep the pedal looking brand new for years to come.


Urethane Restoration Team: Preventative Maintenance Matters & Material Changes

Posted on November 27, 2017 by The Molded Dimensions Team

Part Five

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Urethane Restoration Team: Temperature Variation Matters

Posted on October 23, 2017 by The Molded Dimensions Team

Part Three

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Urethane Restoration Team: The Strategy

Posted on October 9, 2017 by The Molded Dimensions Team

Part Two

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Molded Dimensions Team Earns Best Technical Paper

Posted on September 18, 2017 by The Molded Dimensions Team

2017 Best Technical Paper

by Linda Katz, Molded Dimensions, Inc., PMA President Continue reading



MDI Chemist Explains Updates in Polyurethane Industry

Posted on July 31, 2015 by Nick Cusatis

Written By: Tony Lukas, Chemist Molded Dimensions Inc

screen-shot-2015-07-31-at-9-33-35-amPolyurethane suppliers and processors are continually looking to develop new materials and applications to take advantage of the unique properties of urethane.  One advantage that urethane has over rubber is much higher abrasion resistance.  This has historically been particularly true as the hardness reaches Shore 80A and above.  Although materials of softer hardness have long been available, the physical properties and abrasion resistance has not been a good as rubber in the 50A-70A range.  New developments are allowing for both polyether and polyester based materials that are great improvements over currently available urethanes and even better than natural rubber and SBR.  Typical applications for these types of materials would be in systems with heavy flow of particulate containing liquids or slurries. Continue reading

A PEEK AT OUR PARTS

Pentathane Applications - Wipers Wiper used to material handling in food processing equipment. This material is both FDA approvable and abrasion resistant for durability.
Pentathane Applications - Wheels Pentathane® chemically bonded directly onto precision sealed bearing molded to tight concentricity specifications.
Elastomer Applications - Hose Hose configured for limited space in marine engine application.
Elastomer Applications - Tube Oil resistant molded tube used on combustion engine.