इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS 8422-8 (1977): Piston rings for IC engines, Part 8: Narrow land slotted oil control rings from 50 up to 200 mm nominal diameter D-Rings [TED 2: Automotive Primemovers]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen
UDC 621.43-242.3 IS : 8422 (Part VIII) - 1977 Indian Standard SPECIFICATION FOR PISTON RINGS FOR IC ENGINES m 1 I PART VIII NARROW LAND SLOTTED OIL CONTROL RINGS FROM 50 UP TO 200 mm NOMINAL DIAMETER D-RINGS 1. Scope- Specifies the dimensions, tolerances, tangential loads and other details of D-rings (narrow land slotted oil control rings) from 50 up to 200 mm nominal diameter for internal combustion engines, 2. Dimensions and Tolerances - Shall be as given in Table 1 read along with Fig. I. 8 n DETAIL A SHOWING CHAMFERING OF INTERNAL EDGES (~1) All dimensions in millimetres. FIG. 1 NARROW LAND SLOTTED OIL CONTROL RING (D-RING) 2.1 Arrangement of Slots - Shall be according to Fig. 2. 3. Designation - Shall include: a) Type of ring ; b) Nominal diameter, 4; c) Axial width, h, ; d) Number of this standard ; e) Material symbol ; f) Manufacturing process; g) Whether internally bevelled (IF); and h) Type of coating. Example: A narrow land slotted oil control ring (D-ring) having nominal diameter d,=90 mm, axial width /7,=5 mm, made of alloyed cast iron (A4) and phosphated on all sides (P) shall be designated as: D-Ring 90 x 5 IS : 8422 (Part VIII) A4 P Adopted 20 June 1977 I 0 August 1976, ISI I Price Rsl.7 \ 8 GP 3. lndlan STANDARDS institutlon MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002
TABLE 1 DIMENSIONS AND TANGENTIAL LOADS OF D-RINGS (Clause 2, Fig_ 1 and 2) (All dimensions in millimetres) Uom In- Radial Wall Axial Width Closed Cham- Rad- Land h, Landh, Depth No. Tangen- Dia side Thickness of Ring Gap fering ius for h, for h, of of wlesof tial Dia of Inside Shown in Shown in Groove Slots c1 for hl Force Ft* Edges Shown in in N&20% for h, h, Shown in (I, 4 -~ a, Tol 1 2 Sl KI r3 1 2 1 2 a4 1 2-1 2 50 45.8 2.1 9 9.7 zz 47.6 2.2 48.5 2.25 9.8 IO.6 10.2 11-54 49.4 2.3 4.5-0~010 o,8+o~lo 0.6-1_0,1 _o,022 0.15+;.25 6 10.6 II.5 50.4 2.3-0.05 IO.2 11 :; 51.3 2.35 9.7 10.5 58 53.1 2.45 10.4 II.3 - +0,10 54.9 2.55-0.20 11.2 12.1 E? 56.8 2.6 with a 11.2 12.1 57.7 2.65 maxi- 11.5 13.7 E 58.6 2.7 mum 11.9 14.2 - varia- 65 59.5 2.75 tion o.20+0.25 0,2+0.1 0,8+0,1 12.3 14.6 66 of0.15 0 12.7 15.1 ;y:; 5:; 67 in a 12.3 14.7 - ring 62.3 2.85 4-0.010 0.5 0.7+;:;; lf0.1 1.2+0.1 12.7 15.1 E 64.1 2.95-0,022 12.6 15 65.9 3.05 13.3 15.9 ;: 67.8 3.1 13.3 15.9-0,25&0,07 0.25*0.07 75 68.7 3.15 69.6 3.2 14.1 13'7 :z:: ;8" 71.4 3.3 14.8 17.8.- -0,010 o,25+;.25 o,g+o~lo 73.3 3.35 l&o.1 8 14.8 17.8 E 75.1 3.45 5-0,022-0.05 15.6 18.8 84 76.9 3.55 16.4 19.7-77.8 3.6 +0.10 ;;:z :"9:; E 78.8 3.6-0.25 88 80.6 3.7 with a 0.3&0~15 17.2 20.7 - maxi- 82.4 3.8 mum 20.5 % 84.2 3.9 varia- :;-8 21.4 94 86.1 3.95 tion 17.8 21.5 - of 0.18 0.30+0.30 1.2&OA 87 4 in a 0 18.1 21.a :: 87.9 4.05 ring 18.5 22.4 98 89.7 4.15 19.3 23.4-100 91.6 4.2 _ 19.3 23.4 102 5-o.olo 6-o.010 o.g+o~lo,*,+@fo 93.4 4.3 1.2*0.1 1.4*0.1 &:p 22;:; 104 95.4 4 3-0.022-0.022._- 0.3dzo.07-0*05 "-0.05
105 96.1 4.45 106 97 4.5 108 99 4.5 110 100.8 4.6 112 102.6 4.7 114 104.6 4.7 115 105.4 4.8 116 106.4 4.8 118 108.2 4.9 5-0~010-0,022 6-0~010-0,022 p30+0.30 0 F3&0*15 25.7 f;:: 30.4 Pzl.7 4 30.8 31.9 30.6 26.1 30.8 25.5 30.2 26.4 31.3 120 110 122 112 124 114 27.3 32.3 26.3 31.I 25.3 30 125 114.6 5.2 126 115.6 5.2 128 117.6 5.2 28.5 ;; 130 119.2 132 121.2 134 123.2 135 124 136 125 138 127 140 128.6 142 130.6 144 132.6 5.4 5.4 5.4 5.5 5.5 5.5 5.7 ;:; :;:;g with a maximum variation of0.18 in a ring 0,40+0'3c 0 0.5 33.2 38.2 32.6 37.6 31.5 36.3 34.6 39.8 33.4 38.5 32.4 37.3 145 133.2 5.9 146 134.2 5.9 148 136.2 5.9 36 41.5 35.4 40.8 34.3 39.6 150 138 152 140 154 142 6-0.010-0,022-0.013 7-0.028 1.410.15 35.3 40.7 34.2 39.5 33.2 38.3 155 142.6 6.2 156 143.6 6.2 158 145.6 6.2 35.4 40.9 34.9 40.2 33.8 39.1 160 147.2 6.4 162 149.2 6.4 164 151.2 6.4,.50+0,30 0 36.8 42.4 35.7 41.2 34.7 40 165 152 6.5 166 153 6.5 168 1.55 6.5 36.1 41.6 35.6 41.I 34.6 39.9 170 156.6 172 158.6 174 160.6 g; 6.7 37.4 36.4 35.4 43.2 4402.9
TABLE 1 DIMENSIONS AND TANGENTIAL LOADS OF D-RINGS - Contd (All dimensions in millimetres) P Uom Dia I In- Radial Wall Axial Width side Thickness of Ring Dia I 4 175 161.2 6.9 176 162.2 6.9 178 164.2 6.9-180 165.8 7.1 182 167.8 7.1 184 169.8 7.1 - -I -1-I -~- 195 180 7.5 196 181 7.5 198 183 7.5 200 184.6 7.7?g:;; with a maximum variation of 0.23 in a ring 1 4 7-o.01 3 8-o.01 3 2-0,028-0,028 Edges -..-.. _.. Note - Tangential force Ft values in col 1 and 2 correspond to the values of axial width hl shown in col 1 and 2. -..-.... Shown i;l 2*0,15 12 1.610.1 1 2 1-43.3 42.7 41.6 in N&20% for hl Shown in 44.8 43.6 42.5 44.1 43.5 1.8*0.1 42.4 12 50.6 49.9 48.6.- 52.3 50.9 49.6 51.4 50.8 49.4 45.5 53 44.4 51.7 43.3 50.4 44.7 52.2 ii:: 5; ; 46.2 53:8, I *Tangential load values are applicable for material Al only [see IS : 5791-1977 Technical supply conditions for piston rings for IC engines (firstrevision)]. For other materials load factors given in IS : 5791-1977 shall be used.
IS : 8422 (Part VIII) - 1977 / 5x60-6 SiOTS FOR dl UP TO 58mm 8 SLOTS FOR dl=60 TO 104mm ) 10 SLOTS FOR dl=105 TO 138mm 12 SLOTS FOR dl=140 TO 200mm dl Outside Diameter of Cutter d5 Maximum Difference Between W, and W, mm up Io l68 260 Above 170 55 to 75 FIG. 2 ARRANGEMENT OF SLOTS 4. General Requirements - Shall be as given in IS 5791-1977. 5. Marking - The rings which are to be fitted in a particular direction shall be marked with the word TOP on the top-sides of the rings. For other markings reference should be made to IS : 5791-I 977. 5.1 ISI Certification Marking - Details available with the Indian Standards Institution. EXPLANATORY NOTE This Standard is one of the series of Indian Standards on piston ring dimensions, tangential force, etc. IS : 5791 is a necessary adjunct to this standard which gives details of materials, surface finish, gap types and sizes, surface coatings, manufacturing processes, etc. In the preparation of this standard due consideration has been given to the prevalent sizes in the industry. It is recommended that for new designs, only the sizes given in this standard be used. In the preparation of this standard assistance has been derived from DIN 70947 Piston rings for automotive engineering, D-rings, narrow land drain oil control rings, 50 up to 200 mm nominal diameter, issued by DIN Deutsches lnstitut fi.ir Normung. 5 Printed at Sree Saraswaty Press Ltd, Calcutta, India