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1、i JIS B*8360 88 = 4933608 0022524 3 I % , I JIS t a e I UDC 621.643.3-036 : 669.14-426 : 62-822 JAPANESE INDUSTRIAL STANDARD Wire Reinforced Rubber Hose Assemblies for Hydraulic Use Translated and Published by Japanese Standards Association Printed in Japan 9s Copyright Japanese Standards Associatio
2、n Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- - _ _ _ _ J I S 8*8360 88 if 4733608 0022525 5 m In the event of any doubt arising, the original
3、Standard in Japanese is to be final authority. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*836
4、0 88 46133608 0022526 7 E UDC 621.643.3-036:669.14-426:62-822 JAPANESE INDUSTRIAL STANDARD J I S Wire Reinforced Rubber Hose Assemblies for B 8360-1988 Hydraulic Use 1. Scope This Japanese Industrial Standard specif iec the wire reinforced rubber hose assemblies, hereinafter ref erred to as the “hos
5、e assemblies“, used for hydraulic apparatus and hydraulic circuit using mineral working fluid or water-based working fluid( ). Provided that, the temperature range for using this hose assemblies shall be -40C to +lOOC. Note ( l ) The water-based working fluid herein means working fluid for hydraulic
6、 use such as soluble working fluid, working fluid of oil and water emulsion, working fluid of aqueous glycol and water, excepting for medicinal fluid and ester-based working fluid. Remark: The units and numerical values given in in this Standard are in accordance with the customary units, and are st
7、andardized values. 2. Classification and Symbols 2.1 Classification The hose assemblies shall be classified as given in Table 1 according to the maximum working pressure and the wire reinforced rubber hoses, hereinafter ref erred t o as the “hoses“, and metallic fittings, hereinafter referred to as
8、the “fittings“, to be used. Furthermore, the maximum working pressure means the maximum pressure at which the assembly is capable of being used continuously. Applicable Standards: JIS B 8363-End Fittings and Adapters for Hydraulic Hose Assemblies JIS K 2213-Turbine Oils JIS K 6349-High Pressure Rubb
9、er Hydraulic Hoses Corresponding International Standards: IS0 1436-Rubber products - Hoses and hose assemblies - Wire reinforced IS0 3862-Rubber hoses and hose assemblies - Rubber-covered, spiral wire hydraulic type reinforced, hydraulic type Copyright Japanese Standards Association Provided by IHS
10、under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*83bO 88 E 4933b08 0022527 7 W 70 W 105 2 B 8360-1988 7.0 71) 70 10.5 107 105 Table 1. Classification W 175
11、w 210 Nominal Maximum working MPal PF % B M 27x2 4.2 Combination of Hose and Fittings The combination of hose and fittings shall be as follows: 25 32 (1) The maximum working pressure of fittings shall be not less than the maximum working pressure of hose. R1 PF 1 B M 33x2 R 1% PF l % B M 42x2 (2) In
12、 the case of using screw thread fittings R, G, F, C, (M), (MF), it shall be in accordance with the combination given in Table 4 . R % PF % B M 18X1.5 I l2 I R 1% PF 1 X B M 50x2 I I 38 I R2 PF 2 B M 60x2 I l 50 I Copyright Japanese Standards Association Provided by IHS under license with JSALicensee
13、=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*83bO 88 4733608 0022532 2 = 7 B 8360-1988 5. Dimensions 5.1 Tolerances on Length of Hose Assemblies The tolerances on length of hose asse
14、mblies shall be in accordance with Table 5. Table 5. Tolerances on Length Length of hose assembly mm Under 500 500 to 1000 excl. 1000 to 2000 excl. 2000 to 5000 excl. 5000 and over Tolerances +10 mm O 4-15 mm O $20 mm O +1.0% O +2.0% O 5.2 Dimensions of Fitting after Attachment The dimensions of fit
15、ting However, after attachment shall be in accordance with Fig. 2 and Table 6. flange head fittings shall be excluded. Fig. 2 shows an example, and it does not specify the details of shape of the fitting. Fig. 2. Dimensions of Fitting after Attachment Copyright Japanese Standards Association Provide
16、d by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- Table 6. Dimensions of Fittings after Attachment Unit: mm Designation of fitting 6 9 d (Min.) E (Max.) L (
17、Max.) 3. o 30 55 5. o 34 60 12 I 7.5 I 38 I 70 50 15 I 11. o I 43 I 70 39. o 84 110 19 -1 13.5 I 47 I 75 W 70 nation of hose 25 I 18.5 I 55 I 90 W 105 W 140 W 175 W 210 W 245 W 280 W 315 W 350 32 I 24. O I 63 I 100 25 32 38 50 38 I 29. O I 71 I 110 265 300 360 355 420 460 - 510 560 600 - 650 710 - _
18、 _ _ J I S B*B3b0 B B 4933b08 0022533 4 = 8 B 8360-1988 6. Minimum Bending Radius The minimum bending radius() of hose assemblies shall be the values given in Table 7. Further, the bend radius shall be obtained from the circle arc (inner circle) described by the hose in the case of bending the hose
19、assembly. Note () The minimum bend radius shall be the minimum value of bending radius capable of being used in the impulse pressure and low temperature bending tests, without decreasing the performances of hose assembly. Table 7. Minimum Bend Radius Unit: mm 6 I 80 I 100 I 9 I 100 130 1 150 12 I 12
20、5 I 180 15 I 145 I 205 I 235 19 I 185 I 240 I 280 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*
21、8360 8 B m 4933608 002253Ll 6 9 B 8360-1988 7. Appearance The appearance of hose assemblies shall be as follows: (1) The hose shall be free from such defects as fissures, injurious flaws in use, and bubbles. (2) The fitting shall be free from crackg injurious flaws in use, cavity, and abnormal defor
22、mation. (3) The assemblies part of hose and fitting shall be free from such defects . as the exposure of the reinforcing layer of hose, and the like. 8. Test Methods 8.1 Pressure Resistance Test Apply the test pressure specified in Table 3 with water or oil at an ordinary temperature to the hose ass
23、embly, hereinafter referred to as the %ample“, supplied to test. the presence of any leakage and other abnormalities. After 1 min has passed, examine 8.2 Burst Pressure Test The burst pressure test shall be carried out as foiiows: (1) Use the sample not less than 300 mm in free length of hose, which
24、 has passed the test given in 8.1. (2) Apply to the sample the minimum burst test pressure specified in Table 3 with water or oil at an ordinary temperature and examine the pre- sence of such abnormalities as falling off of fitting and bursting of hose. However, the time from the start of pressurizi
25、ng to the time when the minimum burst pressure is reached shall be 1 min or over. to be free during test. Further, attach the sample horizontally and allow one end of it 8.3 Test for Changing Rate of Length The measurement of changing rate of length shall be carried out as follows: (1) After filling
26、 the inside with water or oil by allowing the sample to be under straight state, horizontally attach it by allowing one end to be free. Describe the marked lines in the axial direction at the center part of sample so that the distance between the marked lines becomes generally not less than 500 mm.
27、not to be included between the marked lines. However, allow the fitting (2) After 1 min has lapsed under the state applying the maximum working pressure specified in Table 1 to the sample, measure the distance between the marked lines. (3) Calculate the changing rate (%) of length from the following
28、 formula (1.): ( 1 ) A 1 k fi X 100 . . . . . . . . . . . . . . . . . . , . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . , . . . . . . . . . . . . . . , . . . . . . . . . Il where d z : changing rate of length (%) Copyright Japanese Standards Association Provided by IHS under lice
29、nse with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*8360 88 4933608 0022535 8 10 B 8360-1988 di : distance between the marked lines before applying pres- d2 : distance b
30、etween the marked lines under applying pressure sure (mm) after a lapse of 1 min (mm) 8.4 Impulse Pressure Test The impulse pressure test shall be carried out as follows: (i) Use the sample passed the test specified in 8.1. (2) Let the length of sample be the free length of those calculated from the
31、 formula (2) in the case of attaching it by bending at 180“ (Fig. 3 U-shape), or the formula (3) in the case of attaching it by bending at 90“ (Fig. 4 L-shape). ( 2 1 . = i +,)+ D 2 D ( 3 ) . z ( R + ) + D 2 D 2 where d : free length of hose (mm) . to be rounded off to integral R : minimum bend radi
32、us given in Table 7 (mm) D : the maximum outside diameter in Table 3 of JIS K 6349 place in calculation (mm) Fig. 3. U-Shape Fig. 4. L-Shape (3) (4) For the hose of designation 19 or less, bend it into a U-shape or L-shape, and for the hose of designation 25 or more, bend it into a L-shape, so that
33、the minimum bend radius of Table 7 is attained, and attach them to the manifolds of the test apparatus, and fix the both ends. The impulse pressure test shall be carried out by the test apparatus which is capable of measuring the impulse pressure at the inlet of manif old using an electronic measuri
34、ng apparatus, generating the impulse of the waveform and frequency given in Fig. 5. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted witho
35、ut license from IHS -,-,- 11 B 8360-1988 The speed of pressure raising of the starting of the impulse pressure cycle shall be taken as 350 to 700 MPa/s (3570 to 7140 kgf/cm2*l/s, which is obtained by connecting the point of 15 % of the maximum impulse pressure and the point of 85 % of the maximum im
36、pulse pressure by a straight line. (5) The test oil shall be class 2 IS0 VG 46 of JIS K 2213 or mineral oil in accordance with this, as appropriate. (6) In the testing, maintain the temperature of circulating oil at a temper- ature of 93 t 5“C, apply 400000 cycles of the maximum impulse pressure of
37、133 % of the maximum working pressure, and examine the presence of leakage, burst and other abnormalities. Fig. 5. Waveform and Frequency of Impulse Pressure Test 5 96 5% of the maximum impulse pressure “O“ 8.5 Low Temperature Bend Test The low temperature bend test shall be carried out as follows:
38、(1) Let the length of sample have the free length of hose of not less t ian the value calculated from the formula (2) in the case of designation of hose of not more than 19, or from the formula (3) in the case of designation of hose of not less than 25. After the sample has been left alone for 248 h
39、 in the low temperature tank at a temperature of -40“ f 1“C, bend it within 10 f. 2 sec around a circle having the diameter of 2 times the minimum bend radius of Table 7 in accordance with the method given in Fig. 6 for the hose of designation 19 or less, and in accordance with the method given in F
40、ig. 7 for the hose of designation 25 or more. Furthermore, in the case where the test is carried out by taking out the sample from the low temperature tank, the time from taking out to the completion of test shall be 12 sec or under. . (2) Copyright Japanese Standards Association Provided by IHS und
41、er license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS BU8360 8B = 4933608 0022537 I M 12 B 8360-1988 (3) After the bending test, return the temperature of the sample to
42、 room temperature, and examine the presence of the breakage, cracking and other abnormalities of the hose. (4) After the test of (3), carry out the test of 8.1. Fig. 6. Low Temperature Bend Test of Hose of Designation 19 or Less Remark: R is the minimum bend radius of Table 7. Fig. 7. Low Temperatur
43、e Bend Test of Hose of Designation 25 or More Remark: R is the minimum bend radius of Table 7. 9. Inspection 9.1 Type Inspection The type inspection shall be carried out on the following inspection items, and the results shall conform to 3., 4., 5., 6. and 7. ( 1 ) Appearance (2) Construction (3) Di
44、mensions (4) Pressure resistance (5) Fatigue resistance (6) Low temperature resistance 9.2 Acceptance Inspection The acceptance inspection shall be carried out on the following inspection items, and the results shall conform to 5. and 7. ( 1 ) Appearance (2) Length of hose assembly In the inspection
45、 on (1) appearance, 100 % inspection shall be carried out, and in the inspection on (2) length of hose assembly, sampling inspection shall be carried out. between the parties concerning acceptance. However, the sampling inspection system shall be as agreed Copyright Japanese Standards Association Pr
46、ovided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 19:41:55 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*83b0 88 Li933608 8822538 3 = 13. B 8360-1988 1 O, Packaging At the time of packaging the hose
47、 assembly, its inside shall be cleaned, and be processed with dust proof measures so as to prevent intrusion of dirts, dusts and the like. 1 1. Designation The hose assembly shall be designated by the number of Standard (or title of Standard) and marking symbol. Example: JIS B 8360 W70 6 400 GF or w
48、ire reinforced rubber hose assemblies for hydraulic use W70 6 400 GF 12. Markine: 12.1 Marking on Products The hose assemblies shall be marked with the following information: (1) Nominal symbol (if it is difficult to be marked on fittings, it may be marked by using type writing or metallic plate.) (2) Year and month of manufacture or its abbreviation (3) Manufacturers name or its abbreviation 12.2 Marking on Package T