Iso 1940 2 pdf

Iso 1940 2 pdf

Rating: 4.7 / 5 (1413 votes)

Downloads: 44397

CLICK HERE TO DOWNLOAD

.

.

.

.

.

.

.

.

.

.

it is advisable to verify the residual unbalance in the tolerance planes ( see 4. by technical committee this part of is0 1940 cancels and replaces, in part, is, of which it con- stitutes a iso 1940 2 pdf minor revision. this paper is presented as a tutorial and user' s reference of the standard and its practical applications. this first edition of isocancels and replaces iso 1940- 2: 1997, of which it constitutes a technical revision. this part of iso 1940 covers the following: identification of errors in the balancing process of rigid rotors; assessment of errors; guidelines for taking errors into account; the evaluation of residual unbalance in any two correction planes. iso and iec maintain terminological databases for use in standardization at the following addresses: — iso online browsing platform: available at iso. this first edition of iso 21940– 2 cancels and replaces iso 1925:, which has been technically revised. a simplified method is shown for determining permissible residual unbalance for various rotor classifications. txt) or read online for free. users should note that all international standards undergo revision from time to time iv © iso – all rights. iso 1940 defines the balance quality of rotors for a variety of services by defining a host of balance quality grades for different types of rotors. title of legally binding document: mechanical vibration - balance quality requirements of rigid rotors. this document covers the balancing of rotors with rigid behaviour. machinery types: general examples. crankshaft drives for large slow marine diesel engines ( piston speed below 9 m/ s), inherently unbalanced. this part of iso 1940 covers the following: identification of errors in the balancing process of rigid rotors; assessment of errors; guidelines for taking errors into account;. mechanical vibration - balance quality requirements of rigid rotors - part 2: balance errors. this part of iso 1940 gives specifications for rotors in a constant ( rigid) state. iso| pdf | engines | rotation around a fixed axis. iso 1940- 1: gives specifications for rotors in a constant ( rigid) state. all terms and definitions formerly contained in different balancing standards have been reviewed and compiled in this document. iso 1940- 1: ( e) table 1 — guidance for balance quality grades for rotors in a constant ( rigid) state. id= gtm- tc2dcmf& gtm_ auth= & gtm_ preview= & gtm_ cookies_ win= x height= 0 width= 0 style= display: none; visibility. the main change is extension of the applicability to rotors with flexible behaviour. international standard is0 1940 was drawn up by technical committee iso/ tc 108, mechanical vibration iso 1940 2 pdf and shock, and circulated to the member bodies in december 1969. isofree download as pdf file (. org/ obp/ — iec electropedia: available at electropedia. 4) and not in the correction planes. for the purposes of this document, the terms and definitions given in iso and isoapply. monitoring, subcommittee sc 2, measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures. of belgium israel spain canada italy sweden. iso 1940- 2: 1997 mechanical vibration balance quality requirements of rigid rotors part 2: balance errors. this standard has been revised by iso:. it specifies balance tolerances, the necessary number of correction planes, and methods for verifying the residual unbalance. a list of all parts in the iso 21940 series can be found on the iso website. number of amendments: equivalence: iso 1940- 2: 1997. iframe googletagmanager. this first edition cancels and replaces iso 1940- 1:, which has been technically revised. isomechanical vib - free download as pdf file (. it has been approved by the member bodies of the following countries : australia greece south africa, rep. pdf), text file (. balance quality grade. the residual unbalance for a rotor is defined in this standard using velocity magnitudes starting at 0. isoconsists of the following parts, under the general mechanical vibration - balance quality requirements of rigid rotors. iso 21940 consists of the following parts, under the general title mechanical vibration — rotor balancing: — part 1: introduction1). this part of iso 1940 covers the following: — identification of errors in the balancing process of rigid rotors; — assessment of errors; — guidelines for taking errors into account; — the evaluation. an improved procedure to handle errors of the balancing machine is described in connection with iso 1940- 2. the main changes are deletion of the terms and definitions which were transferred to isoand a. section name: mechanical vibration and shock ( med 28) designator of legally binding document: is/ iso 1940- 2. any measurement contains errors. in order to verify the residual unbalance of a rotor, the balancing errors cannot be neglected ( see isofor assessment and consideration). a rotor is said to be rigid when the flexure of the rotor caused by its unbalance distribution can be neglected with respect to the agreed unbalance tolerance at any speed up to the maximum service speed. 1 scope this part of iso 1940 gives specifications for rotors in a constant ( rigid) state. iso 1940- 2: 1997. iso 1940- 1, 2nd edition, aug - mechanical vibration - balance quality requirements for rotors in a constant ( rigid) state - part 1: specification and verification of balance tolerances. international standard iso 1940/ 1 is a widely- accepted reference for selecting rigid rotor balance quality. international standard is0 1940/ l was prepared iso/ tc 108, mechanical vibration and shock.