ISO 4392-2:1989
ISO 4392-2:1989


This part specifies two test methods for hydraulic motors. Describes two comparable methods of measurement, namely the constant torque method and the constant pressure method. The accuracy of measurements is divided into 3 classes, A, B, and C which are explained in the normative annex A. The normative annex B includes the classes of measurement accuracy, and the normative annex C contains the use of practical units. This second edition cancels and replaces the first edition (1988).

General information 

  •  :  Withdrawn
     : 1989-08
  •  : 2
     : 10
  •  : ISO/TC 131/SC 8 Product testing
  •  :
    23.100.10 Pumps and motors

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.