Rexnord-Stephan S4 Catalogue

04-2007 3P0200-XX7. Technical Appendix7.4.6 Motor base versionsOur motor base version is a special variant to connect or drive a gear unit with a motor by means of belt drive.This provides the following advantages:lCompact version - an advantage, for example, if structural conditions do not allow for an integral mounting ofthe motor.lAfter installing the drive in the machine or system, the total gear ratio can be adjusted using a simple change inthe belt drive gear ratio.7.4.7 Gear unit with free drive shaftAll gear units of the S4 family can also be designed with free drive shaft. In this case, there is a standard for theshaft dimensions of the drive shaft dependent upon the gear unit type (SI4 / SP4 / SK4) and the gear unit size.This standard is also shown in the dimensioned drawings of the gear units. In addition to these standard dimensions,alternate dimensions are possible or even required, based on applied external loads. The following table providesan overview of the options in the design of the drive shafts. Lines with a light-gray background contain thevalues for our standard dimensions.7Mounting flangeGear unitMounting dimensionsMounting flange on the drive endconnection Ød 1 L 1 L 4 l 5 t 1 U 1 z 1 h i a 2 b 2 e 2 f 2 c 2 l 12 S 4 s 4mm mm mm mm mm mm mm mm mm j6 mm mm mm mm mm mmS115 19 40 4 32 21.5 6 M6x16 110.5 130 85 105 14 11 19 11 M1028 60 5 50 31 8 M10x22 110.5 130 85 105 14 11 19 11 M10S162 19 40 4 32 21.5 6 M6x16 101.5 130 85 105 14 11 19 11 M1028 60 5 50 31 8 M10x22 121.5 130 85 105 14 11 19 11 M1038 80 5 70 41 10 M12x28 158 160 105 130 13 13 23 13.5 M12S235 28 60 5 50 31 8 M10x22 109.5 130 85 105 14 11 19 11 M1038 80 5 70 41 10 M12x28 146 160 105 130 13 13 23 13.5 M12S300 38 80 5 70 41 10 M12x28 138 160 105 130 13 13 23 13.5 M12For permissible loads at the drive shaft please contact Rexnord-Stephan.T43