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GMW17343 1st Edition, November 1, 2015 Part Performance of Jounce Bumper of Polyurethane Elastomer with Cellular Structure
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Description / Abstract: Introduction
Note: Nothing in this standard supercedes applicable laws and regulations.
Note: In the event of conflict between the English and domestic language, the English language shall take precedence.
Purpose. This standard describes the requirements of the jounce bumper in the shock absorber consisting of materials according to paragraph 1.2.1.
Applicability.
Material. Types A and B describe the components and the typical materials used for those components. Types A or Type B shall be specified on the respective drawings and the approved sources shall be listed in the MATSPC database.
Type A. Polyurethane-Elastomer of NDI-base (Naphthalene-Diisocyanate). For additional springs and mechanical high stress bumpers.
Type B. Polyurethane-Elastomer of MDI-Base (4.4 Diphenylmethane Diisocyanate). For bumpers with lower mechanic stress.
Symbols. The material abbreviation according to ISO 11469 is PUR-E.
Remarks. Not applicable
Note: Nothing in this standard supercedes applicable laws and regulations.
Note: In the event of conflict between the English and domestic language, the English language shall take precedence.
Purpose. This standard describes the requirements of the jounce bumper in the shock absorber consisting of materials according to paragraph 1.2.1.
Applicability.
Material. Types A and B describe the components and the typical materials used for those components. Types A or Type B shall be specified on the respective drawings and the approved sources shall be listed in the MATSPC database.
Type A. Polyurethane-Elastomer of NDI-base (Naphthalene-Diisocyanate). For additional springs and mechanical high stress bumpers.
Type B. Polyurethane-Elastomer of MDI-Base (4.4 Diphenylmethane Diisocyanate). For bumpers with lower mechanic stress.
Symbols. The material abbreviation according to ISO 11469 is PUR-E.
Remarks. Not applicable