Page 11 of Airetool Tube Cleaners & Expanders by Cooper Power Tools

airetool heat exchanger ­ condenser expanders step rolling example only airetool condenser expanders selection guide g-900 series heat exchanger and condenser tube expanders step rolling is required when expanding tubes in thick tube sheets typically the first expansion is made at the innermost location away from the inner side of the tube sheet this is extremely important when rolling the opposite end of the vessel this allows the tube material to grow in the proper direction towards the operator and keeps the tube from being stressed after all the tubes have been expanded in this location adjust the expander s collar to overlap the perviously rolled area repeat as necessary until the complete thickness of the tube sheet has been expanded s type rolls double radius are recommended for step rolling to provide a smooth transition on the i.d of the tube g-900 series o.d range 1/4 ­ 3/8 inches 6.3 ­ 9.5 mm expander with 3/4 in 19.0 mm long rolls will accommodate tube sheet thicknesses from 1/4 in to 3/4 in 6.3 mm to 19.0 mm overlap expander with 1-1/4 in 31.7 mm long rolls will accommodate tube sheet thicknesses from 3/4 in to 1-1/4 in 19.0 mm to 31.7 mm these expanders will accommodate a wide range of tube sheet thicknesses note information on any size of tube not listed will be furnished upon request tube sheet thickness 1/4 in to 3/4 in 6.3 mm to 19.0 mm tube o.d tube gauge in mm tube i.d in mm in mm bwg tool no part no roll set no part no 3/4 in to 1-1/4 in 19.0 mm to 31.7 mm tool no part no roll set no part no min i.d tool enters in mm max expan of tool in recommended mandrel no controlled part no rolling motors mm 1/4 in sq dr 6.3 mm airetrol care and maintenance of tube expanders tube expanders are precision tools and should be treated as such the service demanded of them is severe therefore they must be given a reasonable amount of care to insure long life and satisfactory operation 18 19 20 21 .049 1.24 .152 3.6 .042 1.06 .166 4.2 .035 88 .180 4.5 .032 81 .186 4.7 .028 71 .194 4.9 .025 63 .200 5.0 .022 55 .206 5.2 .014 35 .222 5.6 .013 33 .224 5.7 .012 30 .226 5.7 .083 2.10 .209 5.3 .072 1.82 .231 5.8 hand-held rolling applications 1 before using clean the expander thoroughly to remove any dirt or foreign matter 2 check thrust bearing and grease if needed this should be done daily 3 proper lubrication of the expander during the rolling operation is a must to keep the mandrel and rolls cool to extend mandrel and roll life and to insure uniform tube to tube sheet joints 4 depending on the severity of the rolling application the expander should be washed periodically every 25-100 tubes in any commercial solvent for best expander life the expander should be left in solvent to cool while a second expander is used to continue rolling 5 replace scarred or chipped rolls or mandrels immediately one small chip in a roll can cause the complete set of rolls and the mandrel to be damaged in a single rolling cycle 6 when the rolling job is complete wash the expander thoroughly and then oil and grease generously to prevent rusting during storage das automated tube rolling applications 1 before installing the expander into the rolling machine clean the expander thoroughly to remove any dirt or foreign matter 2 check thrust bearing and grease if needed this should be done daily 3 lubrication of the expander during the operation is a must to keep the mandrel and rolls cool to extend mandrel and roll life and to insure uniform tube to tube sheet joints an optional automatic lubrication system is offered for the automatic tube rolling systems 4 hand cleaning is virtually eliminated with the use of the automatic lubricating system as the air pressure that blows the lubrication into the expander to cool it also blows away dirt or foreign matter during each cycle 5 replace scarred or chipped rolls or mandrels immediately one small chip in a roll can cause the complete set of rolls and the mandrel to be damaged in a single rolling cycle 6 when the rolling job is complete wash the expander thoroughly and then oil and grease generously to prevent rusting during storage 1/4 6.3 22 23 24 28 29 30 14 15 921 5016710 922 5016800 923 5016901 924 5017000 925 5017100 926 5017200 927 5017300 921 5175610 923 5175700 923 5175700 924 5175800 925 5175900 923 5175700 924 5175800 .151 .165 .175 .180 .190 .195 .201 3.8 4.1 4.4 4.5 4.8 4.9 5.1 .173 .185 .200 .207 .216 .222 .230 4.4 4.7 5.1 5.2 5.5 5.6 5.8 m-41 2520700 720-2500b 8405541 m-40 2520500 m-39 2520300 928 5017400 903 5174700 .222 5.6 .238 6.0 928 2161300 16 17 3/8 9.5 18 19 20 21 22 23 24 .065 1.65 .245 6.2 .058 1.47 .259 6.5 .049 1.24 .277 7.0 .042 1.06 .291 7.3 .035 88 .305 7.7 .032 81 .311 7.9 .028 71 .319 8.1 .025 63 .325 8.2 .022 55 .331 8.4 927 5017300 915 5016410 916 5016500 924 5175800 903 5174700 916 5175600 916l 5512156 920 5016700 902 5015300 904 5015500 906 5015700 908 5015900 910 5016100 912 5016300 912 5016300 916l 5512157 904 5174800 904 5174800 904 5174800 908 5175000 908 5175000 910 5175200 912 5175400 912 5175400 .201 .230 5.1 5.8 .232 .265 5.8 6.7 .240 .255 .272 .286 .300 .306 .314 6.1 6.4 6.9 7.2 7.6 7.7 7.9 .275 .289 .307 .330 .334 .340 .349 6.9 7.3 7.8 8.1 8.4 8.6 8.8 918 5016600 901 5015200 903 5015400 905 5015600 907 5015800 909 5016000 911 5016200 911 5016200 903 5174700 903 5174700 903 5174700 907 5174900 907 5174900 909 5175100 911 5175300 911 5175300 m-41 2520700 m-42 2520900 m-36 2519700 m-36l 2968803 m-38 2520100 m-30 2518400 m-31 2518700 m-32 2518900 m-33 2519100 720-2500b 8405541 .320 8.1 .357 9.0 m-34 2519300 this expander has 1 long rolls 18 19

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