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1、STD*JIS B 2403-ENGL 1995 W 4933608 05b031b 182 J IS JAPANESE I N D USTR IAL STANDARD Translated and Published by Japanese Standards Association V packings ICs 83.140.50 Descriptors : packing (seals), seals, lubricating oils, v-shape Reference number : JIS B 2403 : 1995 (E) 10 s Copyright Japanese St
2、andards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDTNo reproduction or networking permitted without license from IHS -,-,- - - STDmJIS B 2403-ENGL 1995 4733606 05b0317 O19 B 2403 : 1995 Foreword T h i s
3、 translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law: b Date of Establishment: 1963-02-01 Date o
4、f Revision: 1995-02-01 Date of Public Notice in Official Gazette: 1995-02-01 Investigated by: Japanese Industrial Standards Committee Divisional Council on Machine Elements JIS B 2403 : 1995, First English edition published in 2000-01 Translated and published by: Japanese Standards Association 4-1-2
5、4, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. b b O JSA 2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, el
6、ectronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDT
7、No reproduction or networking permitted without license from IHS -,-,- STDOJIS B 2403-ENGL 1995 4933b08 05b03LB T55 JAPANESE INDUSTRIAL STANDARD V packings 1. Scope JIS B 2403 : 1995 This Japanese Industrial Standard specifies the V packings for general o i l hydraulic machines and instruments, here
8、inafter referred to as the “V packings“, using hydraulic oil of petroleum base. Remarks 1. The mormative references to this Standard are as follows. JIS G 3101 JIS G 4305 JIS H 3100 JIS H 5111 Bronze Castings JIS K 2213 Turbine oils JIS K 6301 JIS R 3455 Rolled steels for general structure Cold roll
9、ed stainless steel plates, sheets and strip Copper and copper alloy sheets, plates and strips Physical testing methods for vulcanized rubber Asbestos brake linings for industrial machines 2. In this Standard, units and numerical values given in are in accordance with the traditional units and are ap
10、pended for informative reference. 2. Classification The classification of V packings and the symbols denoting classifica- tion shall conform to Table 1. Table 1. Classification of V Packings and Symbol Denoting Classification I Symbol denoting Classification Remarks I Homogeneous rubber V packing H
11、Using rubber for material I Using rubber and fabric for materials F Fabric reinforced rubber V packing 3. Performance The amount of o i l leakage per packing gland shall respectively be 2 ml/lOOO strokes or less for the homogeneous rubber V packings-and be 4 mi/lOOO strokes or less for the fabric re
12、inforced rubber V packings i n the measurements of five times, when the V packings are tested i n accord- ance with the specification of 8.1. 4. Corrosion and Tackine When the V packings are tested i n accordance with the specification of 8.2, these packings shall neither cause corrosion nor produce
13、 tacking to the metal that comes into contact with these packings. However, the change i n colour on the surface of the m e t a l shall not be regarded as the corro- sion. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Ber
14、nie Not for Resale, 03/15/2007 00:21:09 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 Test i t e m Durometer hardness (Hs) Tensile strength (N/cm2) kgf/cm2) min. Elongation (%) min. B 2403: 1995 Tolerances Test conditions 90+5 980.7100 100 Orininal state 5. Shape and Di
15、mensions Change of durometer hardness Change of tensile strength (Hs) max. ( X ) max. Change of elongation (%) max. The shape and dimensions for the V packings shall be as follows: +10 -20 -50 I I Temperature 100C (i) The shape and dimensions of the principal parts shall conform to Attached Table 1.
16、 (2) The V packings shall be free from remarkable twist and warp. 6. Appearance The surface of V packings shall be w e l l finished and be free from harmful defects such as flaws, cuts, fissures and cracks. 7. Materials 7.1 Material for Homogeneous Rubber V Packings The material for the homogeneous
17、rubber V packings shall be the rubber, the physical properties of which shall conform to the requirements of Table 2 i n the testing i n accordance with the specifications of 8.1, and be uniform i n qualities. Furthermore, it shall neither contain any substance liable to contaminate the hydraulic o
18、i l of petroleum base nor any substance causing corrosion and tacking to the metals that come into contact with the V packings. I Tensile stress (under 100% elongation) 686.570 I (N/cm2) kgf/cm2) min. Aging test Compres- sion set Compression set (%) max. test I Temperature 100C Time 70 h Time 75 I 7
19、0 h I I I (to be contd) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDTNo reproduction or networking permitted without license from IHS -,-,- STD.JIS B 2403-ENGL 1995 = 4933608
20、 05b0320 b03 3 B 2403: 1995 Table 2 (Contd) O i l resist- ant test Test i t e m Change of durometer hardness Change of tensile strength Change of elongation (% max. Change of volume ( X ) (Hs ( X ) max. Change of durometer hardness Change of tensile strength Change of elongation ( X ) max. Change of
21、 volume ( X ) (Hs (X) max. Tolerances -5 to +10 -20 -40 -10 to+5 -10 t o +5 - 35 -35 o to+20 Test conditions Temperature 100C Time 70 h Test o i l (lubricat- ing oil) oil NO. i (1) Temperature 100C Time 70 h Test o i l (lubricat- ing oii)oil NO. 3 (1) Note (1) The test oils of No. 1 and No. 3 shall
22、be the oils of No.1 and No.3 specified i n 12.3.1 of JIS K 6301. 7.2 Materials for Fabric Reinforced Rubber V Packings The materials for the fabric reinforced rubber V packings shall be composed of the fabric and rubber conforming to the following requirements (i) and (2), and when the fabric insert
23、ed rubber sheet for testing is tested i n accordance with the specifications of 8.4, the physical properties shall conform to the require- ments of Table 3. Furthermore, the materials shall neither contain any substance liable to contaminate the hydraulic oils of petroleum base nor contain any harmf
24、ul substance that errodesand causes tacking to the metals, which come to contact with the V packings. (i) Fabric The fabric shall be uniform i n its density of the warps and woofs and be free from defects such as flaws, t w i s t s and knots, and shall meet the purpose for use. (2) Rubber m e e t th
25、e purpose for use. The rubber shall be homogeneous i n composition and shall Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDTNo reproduction or networking permitted without lice
26、nse from IHS -,-,- STD-JIS B 2403-ENGL 1995 W 4933h08 05hO323 54T W 4 B 2403: 1995 , Table 3. Physical Properties of Fabric Inserted Rubber Sheet for Testing Test items Tensile strength (N/cm2) kgf/cm2) min. Bending I O i l - proof test Change of weight I Appearance Change of weight (a Appearance I
27、8. Testing Methods Tolerances 14 71 150 1 N o crack shall be found both i n longitudinal and lateral directions. O to +15 No abnormality such as peeling and swelling of fabric shall be found. o to +20 N o abnormality such as peeling and swelling of fabric shall be found. Test conditions Original sta
28、te Original state Provided the dia- meter of steel bar is 5 mm. Temperature 100C Time 70 h Test o i l (lubricat- ing oil) oil NO. i (1) Temperature 100C Time 70 h Test o i l (lubricat- ing oi)oii NO. 3 (1) 8.1 Performance Test 8.1.1 T e s t Equipment This equipment is intended to test the leakage of
29、 o i l through V packing during the reciprocating motion, and shall fulfil the following requirements : (1) To be provided with two packing glands. (2) (3) The movement of the rod shall be of the reciprocating motion. The type of test equipment shall be either vertical or horizon tal. (4) It shall b
30、e capable of mounting the specimens specified i n 8.1.2, and shall fulfil the testing conditions specified i n 8.1.3. 8.1.2 Specimens The specimens shall be taken from the V packings of nominal number H50 or F50, and be used in combination of three pieces per packing gland. Copyright Japanese Standa
31、rds Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDTNo reproduction or networking permitted without license from IHS -,-,- STDmJIS B 2403-ENGL I1995 m 4933b08 05b0322 48b m I t e m Test o i l 5 B 2403: 1995
32、 Test condition Remarks Equivalent to No. 2 (turbine o i l with aditive) i n JIS K 2213 8.1.3 Testing Conditions The testing conditions shall conform to Table 4. Room temperature to 70 I Table 4. Testing Conditions shall be measured i n o i l pressure M o tion (stroke/min) Static pressure is allowed
33、. 10.3 It 0.5 (105 f : 5) I Test pressure (MPa) kgf/cm2) chamber of tester. 30 to 40 O i l temperature (OC) Finish of rod I I oil temperature 3.2 s I 100 to 110 I Stroke (mm) Equivalent to BC3 in 91s H 5111 I Material of adapter Number of motions 50000 Intermittent motion is allowed. I 8.1.4 are fit
34、ted to the packing gland, and the amount of o i l leakage shall be measured by operating i n accordance with the test conditions of 8.1.3. Testing Method The V packings and the male and female adapters The o i l leakage mentioned here shall be that which leaks through the rod part. The amount of o i
35、 l leakage shall be measured at every about 10000 motions, and be converted into the amount of o i l leakage in terms of every 1000 motions. 8.2 Corrosion and Tacking Test The corrosion and tacking test shall conform to the following: (i) Four test pieces, 25 mm i n width and 50 mm i n length, shall
36、 be taken from the sheet materials, 2 to 3 mm i n thickness, which are manufactured under the same conditions as the products. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDTNo
37、 reproduction or networking permitted without license from IHS -,-,- 6 B 2403: 1995 (2) The testing shall be carried out as follows: The four test pieces are inserted alternately between a brass sheet, steel sheet and stainless steel sheet, dimensions of which are 3 mm i n thickness, 25 mm i n width
38、 and 50 mm i n length, and the surfaces of which are w e l l polished, and these are piled up i n close contact with each other. surfaces shall be investigated after containing these i n a thermo- static vessel for 24 hours keeping its temperature at 70 ? 1C. The conditions of corrosions and tacking
39、s to the metal Remark: It should be preferable that the brass sheet to be used i n this testing conforms to J I S H 3100, the steel plate to JIS G 3101 and the stainless steel plate to JIS G 4305. 8.3 Rubber Material Test The rubber material test shall conform to the following: (i) The test pieces s
40、hall be manufactured under the same conditions as the products. (2) The test shall be carried out under the same test conditions speci- fied i n Table 2 and by the method i n accordance with JIS K 6301. 8.4 Tests for Fabric Inserted Rubber Sheet 8.4.1 Fabric Inserted Rubber Sheet for Testing The fab
41、ric inserted rubber sheets for testing shall conform to the following: (1) The material shall be the same as that for the fabric reinforced rubber V packings. (2) The fabric shall be laminated to the thickness of 2 to 3 mm. (3) In laminating the fabric the directions of weave shall be matched. (4) T
42、he manufacturing conditions shall be the same as those for fabric reinforced rubber V packings. 8.4.2 Test at Original State The testing method for the original state of the fabric inserted rubber sheet shall conform to the following: (1) Tensile Strength The testing method of the tensile strength s
43、hall conform to the following: (a) Three pieces of dumbbell shaped test pieces which are given i n Fig. 1 are extracted each in the longitudinal and lateral directions of the fabric from the fabric inserted rubber sheet for testing specified in 8.4.1. c Copyright Japanese Standards Association Provi
44、ded by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/15/2007 00:21:09 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B 2403-ENGL i1995 9 4933606 05b0324 259 m 7 B 2403: 1995 Fig. 1 I- IO0 Unit: mm Remark: Fig. 1 c
45、onform to JIS R 3455. (b) The testing method shall conform to JIS K 6301. speed shall generally be taken as 300 f 15 =/min, and the resuit of tensile strength shall be taken as the smaller mean value of the mean values of the measured values for three test pieces taken each i n the longitudinal and
46、lateral directions, The tension (2) Bending The method of bending test shall conform to the follow- ing : (a) Each two test pieces i n the longitudinal and lateral directions of the fabric, 2 to 3 mm i n thickness, 15 mm i n width and i00 mm i n length, shall be taken from the fabric inserted rubber
47、 sheet for testing specified i n 8.4.1. (b) The test shall be carried out by bending the test piece by 180 with closely contacting it around the periphery of a steel bar of 5 mm i n diameter, and the existence of cracks shall be examined on the four test pieces. 8.4.3 Oil-proof Test The oil-proof te
48、sting method for the fabric inserted rubber sheet for testing shall conform to the following: (i) Three test pieces, 2 to 3 mm i n thickness, 20 mm i n width and 20 mm i n length, shall be taken from the fabric insertedrubber sheet for testing specified i n 8.4.1. (2) The testing shall be carried out by investigating the change of weight and the appearance, with the test pieces immersed into the test o i l under the testing conditions specified i n Table 3. The weight change test shall