Drive dimensioning
Dimensioning Thermal power limit
The permissible gearbox permanentpower is restricted by: ˘ The mechanical power, defined by the material strengthof the individual components or ˘ The churning losses associated with the lubricant. These are determined by the mounting position and circumferential speed of the gears. ˘ The thermal power limit, defined by the heatbalanceThe thermal power limitmay be lower than the mechanicalpower rating indicated in the selection tables.The thermal power limitis determined by: ˘ The load and the speed ˘ The ambientconditions: temperature, air circulation,heatinputor dissipation via shafts and the foundation.Please contactLenze
2
˘ If you are using the following gearbox type, size andratio combinations atinputspeed n
1 > 1500 rpm:
Gearbox modelGearbox sizesRatiosi <=
Helical gearbox GST07, 09, 11, 1410Shaft-mounted helical gearbox GFL07, 09, 11, 1416
Helical-bevel gearbox GKS07, 09, 11, 1425
...or if the inputspeeds n
1 listed are exceeded:
Drive size M063 … 100112 … 132160 … 225DrivedesignN, W ò A … ò E ò F … ò G ò H … ò Kn
1 for mounting positions A, B, E, F4000
rpm
3000
rpm
2000
rpm
n
1 for mounting positions C, D3000
rpm
1500
rpm
1500
rpm
Possible ways of extending the application area
Whatto do Increase the permissible temperature range of the gearbox ˘ Synthetic lubricant(option) ˘ Shaftsealing rings made from FP material/Viton (option)Reduce the power loss ˘ Synthetic lubricant(option) ˘ Reducing the amountof lubricant(following consultation)Increase heatdissipation ˘ Possible air convection on the machine/system ˘ Fan cooling (for example, supply line of the drivingmotor) ˘
Oil cooling 2-2
G-motion consten 7/2006