ISO 484-2:2015 PDF

Name: ISO 484-2:2015 — Shipbuilding — Ship screw propellers — Manufacturing tolerances — Part 2: Propellers of diameter between 0,80 and 2,50 m inclusive
SKU: ISO 484-2:2015
Price: 25 EUR
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Shipbuilding — Ship screw propellers — Manufacturing tolerances — Part 2: Propellers of diameter between 0,80 and 2,50 m inclusive

Название (английский):

ISO 484-2:2015

Shipbuilding — Ship screw propellers — Manufacturing tolerances — Part 2: Propellers of diameter between 0,80 and 2,50 m inclusive

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 19 ноября 2015 г.
Издание:: ISO IS 484 edition 2 version 1
ICS:: 47.020.20

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Описание (английский):

ISO 484-2:2015 defines manufacturing tolerances of ship screw propellers of a diameter between 0,80 m and 2,50 m. NOTE Some deviations for the tolerance are permitted in certain cases subject to the discretion of the customer or of the designer and the customer.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 484-2:2015 - "Shipbuilding - Ship screw propellers - Manufacturing tolerances - Part 2" - specifies manufacturing tolerances for ship screw propellers with a diameter between 0.80 m and 2.50 m inclusive. The standard defines measurement methods, accuracy classes, and numerical tolerance limits for pitch, blade thickness, extreme radius, form and contour, surface finish and static balancing. It also notes that some deviations may be permitted by agreement between the customer and designer.

Keywords: ISO 484-2:2015, ship screw propellers, manufacturing tolerances, propeller pitch, blade thickness, propeller radius.

Key topics and technical requirements

Scope and applicability: Applies to monobloc, built-up and controllable pitch propellers within the 0.80–2.50 m diameter range.

Accuracy classes: Four classes - S (very high), I (high), II (medium), III (wide tolerances). The customer selects the class.

Pitch measurement methods:

Marking gauges
Graduated ring method
Coordinate measuring machine (CMM) using Cartesian or polar coordinates

Pitch tolerances: Specified as percentages of design pitch and minimum absolute values for:

Local pitch, mean pitch per radius, mean pitch per blade, and mean pitch for the entire propeller (Table values depend on accuracy class).

Radius & thickness tolerances:

Extreme radius tolerances given as % of radius with minimum mm values.
Blade thickness tolerances (plus/minus) expressed as % of local thickness with minimum absolute values; measurements taken at the same radii used for pitch checks.

Form, contour and edges:

Templates or equivalent checks for leading/trailing edges and cylindrical sections (stricter limits for classes S and I).
Rules to limit cumulative deviations (e.g., algebraic sum constraints on consecutive local pitch deviations).

Other requirements:

Surface finish indication (referenced ISO 1302)
Static balancing (referenced ISO 1940-1)
Measurement equipment and verification procedures

Applications and users

Who uses ISO 484-2:2015:

Propeller manufacturers and CNC machining shops

Shipyards and marine equipment suppliers

Naval architects, marine engineers and propeller designers

Classification societies and surveyors

Procurement teams specifying acceptance tolerances

Practical uses:

Define acceptance criteria for manufactured propellers

Guide inspection and measurement procedures (CMM, templates, ring gauges)

Support contractual agreements on accuracy class and permissible deviations

Ensure compliance with classification society requirements for thickness and balance

Related standards

ISO 484-1 (Part 1 - propellers > 2.50 m)

Normative references: ISO 1302 (surface texture) and ISO 1940-1 (balance quality requirements)

For specification and inspection workflows, reference ISO 484-2:2015 when defining manufacturing tolerances and measurement protocols for small to medium-sized ship screw propellers.

ISO 484-2:2015 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 1302:1992

Technical drawings — Method of indicating surface texture

ISO 1940-1:1986

Mechanical vibration — Balance quality requirements of rigid rotors — Part 1: Determination of permissible re…

BS ISO 484-1:2015

Shipbuilding. Ship screw propellers. Manufacturing tolerances - Propellers of diameter greater than 2,50 m