SKF Cooper split roller bearings and bearing units

1 Overview, selection and application recommendations Relubrication For split cylindrical roller bearings, use the shortest relubrication interval to which one or more of the conditions in table 14 apply. For applications with 100% initial grease fill, use a relubrication interval of 400 hours regardless of the environment. If operating conditions fall outside those listed, contact SKF. The amount of grease required is pro- vided in table 15, pages 35 to 41 . For split tapered roller bearings, relubri- cate weekly or every 150 hours of operation: • d a ≤ 120 mm: 2 ml grease • d a > 120 mm: 4 ml grease NOTE: 2 ml grease is approximately equal to one shot from a conventional side-lever grease gun. Automatic lubrication systems should be metered to deliver grease at an average rate equivalent to the relubrication period speci- fied. SKF recommends relubricating while the bearing is rotating to help distribute the grease but only if it is safe to do so. Table 14 Relubrication interval – split cylindrical roller bearings Relubrication interval Operating conditions Temperature Speed Environment d n 1) hours °C (°F) mm – 100 80 to 175 200 000 to 300 000 2) very dirty (175 to 345) 200 60 to 80 100 000 to 200 000 dusty/splashed (140 to 175) 400 3) < 60 < 100 000 clean/dry (< 140) 1) Speed factor d n [mm] = bearing bore [mm] x rotational speed [r/min] 2) Or up to the maximum for 100 series bearings 3) For bearings with 100% initial grease fill in applications with no axial load, this may be extended over 400 hours. Please contact SKF for support. Table 13 Initial grease fill – split tapered roller bearings 1) Shaft diame- ter Designations Speed Initial fill Speed Initial fill Speed Initial fill Speed Initial fill Speed Initial fill Bearing Cartridge Cartridge with grease groove seals for labyrinth seals 100% 75% 50% 33% 25% d a < > ≤ > ≤ > ≤ > mm r/min kg r/min kg r/min kg r/min kg r/min kg 75 1DTB75M 1DTC75GR75M 1DTC75GR30TL 667 0,19 667 1 333 0,14 1 333 2 000 0,10 2 000 2 667 0,06 2 667 0,05 80 1DTB80M 1DTC80GR80M 1DTC80GR35TL 625 0,23 625 1 250 0,17 1 250 1 875 0,12 1 875 2 500 0,08 2 500 0,06 90 1DTB90M 1DTC90GR90M 1DTC90GR35TL 556 0,25 556 1 111 0,19 1 111 1 667 0,12 1 667 2 222 0,08 2 222 0,06 100 1DTB100M 1DTC100GR100M 1DTC100GR40TL 500 0,41 500 1 000 0,31 1 000 1 500 0,20 1 500 2 000 0,13 2 000 0,10 110 1DTB110M 1DTC110GR110M 1DTC110GR45TL 455 0,44 455 909 0,33 909 1 364 0,22 1 364 1 818 0,14 1 818 0,11 120 1DTB120M 1DTC120GR120M 1DTC120GR50TL 417 0,50 417 833 0,38 833 1 250 0,25 1 250 1 667 0,17 1 667 0,13 130 1DTB130M 1DTC140GR130M 1DTC140GR50TL 357 0,65 357 714 0,48 714 1 071 0,32 1 071 1 429 0,21 1 429 0,16 140 1DTB140M 1DTC140GR140M 1DTC140GR55TL 357 0,65 357 714 0,48 714 1 071 0,32 1 071 1 429 0,21 1 429 0,16 150 1DTB150M 1DTC160GR150M 1DTC160GR60TL 313 0,63 313 625 0,47 625 938 0,32 938 1 250 0,21 1 250 0,16 160 1DTB160M 1DTC160GR160M 1DTC160GR65TL 313 0,63 313 625 0,47 625 938 0,32 938 1 250 0,21 1 250 0,16 180 1DTB180M 1DTC180GR180M 1DTC180GR70TL 278 0,77 278 556 0,58 556 833 0,39 833 1 111 0,25 1 111 0,19 Excessive quantities of lubricant should not be used, particularly at high speeds, as this may result in excessive churning and overheating. 1) The values are valid for a typical lithium grease (about 0,85 g/cm 3 ) 34