GB/T 20421.2-2006 Active National standards

GB/T 20421.2-2006 Hydraulic fluid power—Determination of characteristics of motors—Part 2:Startability

GB/T 20421.2-2006 Hydraulic fluid power—Determination of characteristics of motors—Part 2:Startability

Publish Date: 2006-08-22 Implement Date: 2007-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 20421.2-2006

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Hydraulic and pneumatic devices

ICS Name: Pumps and motors

Publish Date: 2006-08-22

Implement Date: 2007-01-01

Pages: 13 pages

Scope

This part of GB/T 20421 describes two methods for determining the startability of rotary hydraulic motors. These are two similar measurement methods, the constant torque method (see Chapter 6) and the constant pressure method (see Chapter 7). Since the results obtained are the same, there is no difference in superiority between the two methods. In Appendix A, explanations of additional physical quantities and letter symbols are provided. The accuracy of the measurement is divided into three grades, A, B, and C, and explanations are given in Appendix B.

Development Information

Word Count: 20 Thousand words Pages: 13 pages

Same series standard

GB/T 20421.1-2006 Hydraulic fluid power—Determination of characteristics of motors—Part 1:At constant low speed and at constant pressure GB/T 20421.3-2006 Hydraulic fluid power—Determination of characteristics of motors—Part 3:At constant flow and at constant torque

Referenced Standards

ISO 9110-2:1990 GB/T 786.1-1993 Fluid power systems and components—Graphic symbols and circuit diagrams—Part 1:Graphic symbols GB/T 786.1-2009 Fluid power systems and components—Graphic symbols and circuit diagrams—Part 1:Graphic symbols for conventional use and data-processing applications GB/T 786.1-2021 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 1:Graphical symbols GB/T 3141-1994 Industrial liquid lubricants—ISO viscosity classification GB/T 17446-1998 Fluid power systems and components—Vocabulary GB/T 17446-2012 Fluid power systems and components—Vocabulary GB/T 17446-2024 Fluid power systems and components—Vocabulary GB/T 17485-1998 Hydraulic fluid power—Pumps,motors and integral transmissions—Parameter definitions and letter symbols JB/T 7033-2007 Hydraulic transmission measurement technology general principles JB/T 7033-1993 Hydraulic measurement technology general principles

Adopt standards

ISO 4392-2:2002

Related Standards

GB/T 2353.2-1993 Replaced

GB/T 2353.2-1993 Hydraulic fluid power—Positive displacement pumps and motors—Dimensions and identification code for mounting flanges and shaft ends—Part 2:Polygonal flanges(including circular flanges)

Publish Date: 1993-01-11

GB 2353.1-1994 Replaced

GB 2353.1-1994 Hydraulic fluid power—Positive displacement pumps and motors—Dimensions and identification code for mounting flanges and shaft ends—Part 1:Two-and four-hole flanges and shaft ends

Publish Date: 1994-08-29

GB/T 7782-1996 Replaced

GB/T 7782-1996 Metering pump

Publish Date: 1996-12-23

GB/T 17368-1998 Abolished

GB/T 17368-1998 Calibrating rule of using fuel injection pump test-bench

Publish Date: 1998-05-08

GB/T 17485-1998 Active

GB/T 17485-1998 Hydraulic fluid power—Pumps,motors and integral transmissions—Parameter definitions and letter symbols

Publish Date: 1998-09-02

GB/T 17491-1998 Replaced

GB/T 17491-1998 Hydraulic fluid power—Positive displacement pumps,motors and integral transmissions—Determination of steady-state performance

Publish Date: 1998-09-02