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Pneumatics for Mechanical Motion

  • Magazine Article
  • TBMG-34574
Published 2019-06-01 by Tech Briefs Media Group in United States

Employing fluid power to achieve mechanical motion can be implemented via hydraulics using uncompressible liquids or via pneumatics using compressible gasses; typically, air. The latter provides several distinct advantages, making it a popular choice for many mechanical applications. Indeed, this isn’t a recent development, as using pressurized air for industrial applications and automated machinery has a history extending back well over 100 years.

 

Aerospace - Visual Inspection Standard for Elastomeric Sealing Elements Other than O-Rings

A-6C2 Seals Committee
  • Aerospace Standard
  • AS5752
  • Current
Published 2019-05-17 by SAE International in United States
This standard provides the following: a The required surface finish criteria for the designed function of the parts b The definition of surface imperfections and defects that affect surface quality c The categories by location for each geometry for the permissible type, size and quantity of defects It also establishes the quantitative levels of acceptance by providing defined limits and inspection guidance for the acceptance or rejection of production parts This specification is applicable but not limited to, the surface quality of: T-Seals L-Rings Capped T Rings Capped L Rings Cammed Type Seals Cruciform Shaped Elastomers Pyramid (Dyna-Bak) Seals Square Ring Seals Quadruple Lobed Seals U-Cups Spring Energized U-Cups Molded in Place Metal Gasket Seals
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Method of Measuring and Reporting the Pressure Differential-Flow Characteristics of a Hydraulic Fluid Power Valve

CTTC C1, Hydraulic Systems
  • Ground Vehicle Standard
  • J1117_201904
  • Current
Published 2019-04-11 by SAE International in United States
Applies to hydraulic fluid power valves as applied to Off-Road Self-Propelled Work Machines defined in SAE J1116.
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Rubber: Silicone Rubber (PVMQ) Low Outgassing, Low Temperature Resistant 45 - 55 Shore “A” Hardness For Seals in Space and Vacuum Service

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS7269C
  • Current
Published 2019-02-28 by SAE International in United States
This specification covers a Silicone (PVMQ) Rubber compound in the form of molded rings.
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Welded Flash Controlled, High Strength (690 MPa Tensile Strength) Low Alloy Steel Hydraulic Tubing, Stress Relieved, Annealed for Bending, Double Flaring, Cold Forming, and Brazing

Metallic Tubing Committee
  • Ground Vehicle Standard
  • J2832_201902
  • Current
Published 2019-02-27 by SAE International in United States
This SAE Standard covers stress relieved electric resistance welded flash controlled single wall high strength low alloy steel tubing intended for use in high-pressure hydraulic lines and in other applications requiring tubing of a quality suitable for bending, double flaring,cold forming and brazing. Material produced to this specification is not intended to be used for single flare applications due to the potential leak path caused by the ID weld bead. The grade of material produced to this specification is of micro-alloy content. Nominal reference working pressures for this tubing are listed in ISO 10763 and SAE J1065. Brazed and/or welded tube assembly configurations made to specific geometry and components in association with this material may require qualification testing in accordance with ISO 19879. Cold forming the tube end configurations avoids this systemic testing by not compromising the structural integrity of the tube material. In an effort to standardize within a global marketplace and ensure that companies can remain competitive in an international market, it is the intent to convert to metric tube sizes, which will:…
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SEAL, BONDED, ALUMINUM ALLOY 6061-T6, AMS4027, MOLD IN GROOVE, NBR RUBBER, AMS-P-5315

A-6C2 Seals Committee
  • Aerospace Standard
  • AS27194C
  • Current
Published 2018-11-26 by SAE International in United States
No Abstract Available.
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Aerospace Microscopic Sizing and Counting of Particulate Contamination for Fluid Power Systems

A-6C1 Contamination and Filtration Committee
  • Aerospace Standard
  • AS598A
  • Current
Published 2018-07-24 by SAE International in United States
This SAE Aerospace Standard (AS) defines the materials, apparatus and procedure for microscopic sizing and counting of particulate contamination of fluid power systems by membrane filtration using microscopic counting.
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Welded and Cold-Drawn, High Strength (690 MPa Tensile Strength) Low Alloy Steel Hydraulic Tubing, Stress Relieved Annealed for Bending, Flaring, Cold Forming and Brazing

Metallic Tubing Committee
  • Ground Vehicle Standard
  • J2833_201806
  • Current
Published 2018-06-15 by SAE International in United States
This specification covers stress relieved annealed electric resistance welded and cold-drawn single-wall high strength low alloy steel tubing intended for use in hydraulic pressure lines and in other applications requiring tubing of a quality suitable for bending, flaring, cold forming, and brazing. The grade of material produced to this specification is of micro-alloy content. Nominal reference working pressures for this tubing are listed in ISO 10763 and SAE J1065. CAUTION: Sub-critically annealed steels are often produced using anneal temperatures below the Lower Critical Temperature (AC1) of the given steel to achieve the desired strength levels. Welding, brazing, or other processing methods that subject the tube material or assembly to temperatures near or above AC1 might initiate isothermal transformation of the tube microstructure and compromise the strength of the tube in the heat affected zone by further annealing the tube. Therefore, ISO 10763 and SAE J1065 nominal reference working pressures might not be applicable. It is recommended that the user and the fabricator validate and agree that the tube assembly design and pressure ratings are not…
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Sensing the Future of Pneumatics

  • Magazine Article
  • TBMG-29003
Published 2018-06-01 by Tech Briefs Media Group in United States

Some species of sharks must constantly swim to keep water flowing over their gills to stay alive. That same concept also tends to apply to technology — once a technology stops evolving and moving forward, it's on its way to extinction. Fortunately for those responsible for designing and maintaining the pneumatic systems found throughout industrial environments, new sensing and data communications solutions are making pneumatics smarter and simpler to integrate into the Industrial Internet of Things (IIoT). The future of pneumatics will be linked with the expansion of smart sensing technology. Cost-effective sensing and information processing equipment is now becoming part of all types of fluid power equipment, from connectors, tubing, and hoses, to pneumatic cylinders, actuators, and filters.

 

Recommended Practices for Fluid Conductor Carbon, Alloy and High Strength Low Alloy Steel Tubing Applications-Part 2: General Specifications and Performance Requirements

Metallic Tubing Committee
  • Ground Vehicle Standard
  • J2551/2_201804
  • Current
Published 2018-04-09 by SAE International in United States
These recommended practices provide recommendations for general specifications and performance requirements of carbon, alloy and high strength low alloy steel tube assemblies for fluid power applications utilizing commonly available manufacturing methods and general guidelines for tube selection and application.
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