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GB/T 21938-2008
GB/T 21938-2008 Earth-moving machinery—Hydraulic excavator and backhoe loader boom-lowering control device—Requirements and tests
Abstract
This standard specifies the performance requirements and test methods for the boom descent control device, which is installed on the boom lift hydraulic cylinder and used to control the descent speed of the boom when the hydraulic pipeline fails or ruptures. This standard applies to the boom descent control device used in the loading and lifting operations of the reverse shovel device of hydraulic excavators and excavator loaders.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Replaced |
| Standard Code | GB/T 21938-2008 |
| CCS | Construction engineering construction machinery |
| ICS | Earthmoving machinery |
| Implement Date | 2009-01-01 |
Price
$ 36
Subtotal
$ 36
Tax
$ 0.00
Order Total (incl. tax)
$ 36