SIST EN ISO 4566:2000

• Abstract:

  Specifies the dimensions and tolerances for interchangeability in the shaft diameter range of 20 mm to 160 mm with a taper of 1 : 10.

• Status: Published
• Publication Date: 30-Nov-2000
• ICS: 47.080 - Small craft
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2000
• Due Date: 01-Dec-2000
• Completion Date: 01-Dec-2000
• Ref Project: EN ISO 4566:1995 - Small craft with inboard engine - Propeller shaft ends and bosses with 1 : 10 taper (ISO 4566:1992)

SIST EN ISO 4566:2000 is a Slovenian standard, published by SIST, for small craft with inboard engine. It specifies the dimensions and tolerances for Propeller shaft ends and Propeller bosses with a 1 : 10 taper so these parts can be made interchangeably in the shaft diameter range of 20 mm to 160 mm.

What does SIST EN ISO 4566:2000 specify?

SIST EN ISO 4566:2000 specifies the geometry needed for Propeller shaft ends and bosses used on inboard-engined small craft. Its focus is interchangeability: parts made to this standard should fit together across manufacturers when the nominal size matches.

The document is organized into scope, normative references, definitions, dimensions, construction details, tolerances, threads, and designation. Figure 1 shows the general form, and Table 1 gives the dimension set for the supported nominal diameters.

A few listed shapes in Figure 1 are not essential to interchangeability if they are not dimensioned in Table 1, so manufacturers may choose those details to suit their own coupling design. That matters in practice because the standard fixes the fitting interface while leaving some machining and design choices open.

What are the key requirements of SIST EN ISO 4566:2000?

SIST EN ISO 4566:2000 is built around the dimensional data in Figure 1 and Table 1. The standard uses nominal sizes, preferred sizes, and tolerances to define what counts as a compatible Propeller shaft end and boss.

• Clause 4 says the dimensions shall be those shown in Figure 1 and Table 1, and the reference dimensions are nominal only. In practice, this means buyers and manufacturers should use the table values for selection and inspection, not treat the reference values as exact working dimensions.
• Clause 4 also says nominal diameters without brackets are preferred, while bracketed sizes are a second choice. The same rule applies to thread diameters, so the preferred sizes are the ones to specify first.
• Clause 5 keeps some construction details open, including the key, keyway, corner radii, thread undercut, thread end, and optional features such as a safety pin hole or centring point. This allows different machining methods while preserving interchangeability at the mating interface.
• Clause 5 also sets thread-length rules: the thread length equals the thread diameter, and the Propeller nut must engage at least 80 % of that thread length. That gives enough thread engagement for secure assembly.
• Clause 6 assigns the tolerances for the shaft end taper small diameter, the boss taper large diameter, the cone angle, the keyways and keys, and the boss length. For users, this is the part that drives inspection and acceptance of manufactured parts.
• Clause 6.3 ties cone-angle tolerances to ISO 1947, and clause 6.4 ties keyway and key tolerances to ISO/R 773. This keeps the taper and key fit aligned with established tolerance systems.
• Clause 7 requires M-Fine threads for Propeller nuts and shaft ends. That matters because the thread form is part of the mating design, not an optional shop detail.
• Clause 8 requires designation by this standard reference plus the nominal diameter, for example the format shown for a Propeller boss. This gives a simple ordering and drawing reference.

What terms does SIST EN ISO 4566:2000 define?

SIST EN ISO 4566:2000 defines nominal diameter as the diameter of the large end of the shaft end taper, which is the same as the cylindrical shaft diameter when tolerances are ignored.

The standard defines taper as the conical portion of the shaft end that carries the key, transmits Propeller shaft torque, and still allows disassembly.

A Propeller boss is the hub that mates with the shaft end taper. In practice, it is the part that must match the shaft end dimensions for the assembly to work.

A Propeller nut is the nut used on the threaded shaft end to secure the Propeller boss. Its engagement length is controlled so the joint stays properly assembled.

M-Fine threads are the thread form required for the Propeller nut and shaft end. Using one thread system helps prevent mismatch between parts from different makers.

Who uses SIST EN ISO 4566:2000?

SIST EN ISO 4566:2000 is used by designers and manufacturers of small craft with inboard engines, by makers of Propeller shafts and Propeller bosses, and by machining shops that produce the taper, keyway, and thread features. It is also useful for quality managers, inspectors, and buyers who need to specify or check compatibility before assembly.

What changed in SIST EN ISO 4566:2000 from the previous edition?

SIST EN ISO 4566:2000 is the second edition of ISO 4566 and cancels and replaces ISO 4566:1985. The stated changes are the addition of the 22 mm nominal diameter and its associated values, a correction in the key column for the 25 mm nominal diameter, and minor editorial corrections.

Which standards are used with SIST EN ISO 4566:2000?

SIST EN ISO 4566:2000 cites two normative references:

• ISO/R 773:1969 - gives dimensions for rectangular or square parallel keys and their corresponding keyways. It supports the key and keyway requirements in clause 6.
• ISO 1947:1973 - gives the system of cone tolerances for conical workpieces. It supports the cone-angle tolerance method in clause 6.3.

What does the SIST EN ISO 4566:2000 document contain?

SIST EN ISO 4566:2000 contains the scope, definitions, reference standards, dimensional rules, construction guidance, tolerance rules, thread requirements, and designation format for Propeller shaft ends and bosses with a 1 : 10 taper. Figure 1 shows the overall shape and the note on thread engagement, while Table 1 gives the nominal sizes and corresponding dimensions used for selection, design, and inspection.

The document is practical rather than theoretical: it gives the interface dimensions that make parts interchangeable, and it leaves non-essential design details to the manufacturer. That makes it useful for drawing checks, machining, receiving inspection, and supplier specification.

SLOVENSKI STANDARD
01-december-2000
Small craft with inboard engine - Propeller shaft ends and bosses with 1 : 10 taper
(ISO 4566:1992)
Small craft with inboard engine - Propeller shaft ends and bosses with 1 : 10 taper (ISO
4566:1992)
Kleine Wasserfahrzeuge mit Innenbordmotoren - Propellerwellenenden und
Propellernaben mit Kegel 1 : 10 (ISO 4566:1992)
Navires de plaisance a moteur intérieur - Extrémités d'arbres porte-hélices et moyeux
d'hélices avec une conicité de 1 : 10 (ISO 4566:1992)
Ta slovenski standard je istoveten z: EN ISO 4566:1995
ICS:
47.080 ýROQL Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD
Second edition
1992-12-15
Small traft with inboard engine -
Propeller shaft ends and bosses with 1:10
taper
Navires de plaisance i moteur int&ieur - Ext&mit& d’arbres
porte-helices et moyeux d’helices avec une conicite de 1: 10
Reference number
ISO 45663 992(E)
ISO 4566: 1992(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 4566 was prepared by Technical Committee
lSO/TC 188, Small traft.
This second edition cancels and replaces the first edition
(ISO 4566:1985). In table 1, the nominal diameter, Gnom, of 22 mm and its
associated values are additional, and corrections have been made in the
“key” column for nominal diameter, Dnomr of 25 mm. Minor editorial cor-
rections have also been made.
0 ISO 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronie or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
ii
INTERNATIONAL STANDARD ISO 4566:1992(E)
Small traft with inboard engine - Propeller shaft ends
and bosses with kl0 taper
1 Scope 4 Dimensions
This International Standard specifies the dimensions The dimensions shall be those shown in figure 1 and
for interchangeability of Propeller bosses (hubs) and table 1. The “reference dimensions” indicated in the
Propeller shaft ends in the shaft diameter range of table shall be considered nominal dimensions for
20 mm to 160 mm with a taper of 1 :lOl), intended for
guidance only.
installation on inboard-engined small traft.
Configurations shown in figure 1 not specified by di-
mensions in table 1 are not essential to interchange-
2 Normative references
ability and are therefore left to the discretion of the
manufacturer.
The following Standards contain provisions which,
through reference in this text, constitute provisions Nominal diameters without brackets shall be pre-
of this International Standard. At the time of publi- ferred; those in brackets are a second choice.
cation, the editions indicated were valid. All Standards
Thread diameters without brackets shall similarly be
are subject to revision, and Parties to agreements
preferred; those in brackets are alternatives.
based on this International Standard are encouraged
to investigate the possibility of applying the most re-
cent editions of the Standards indicated below.
5 Construction details
Members of IEC and ISO maintain registers of cur-
rently valid I
...