T-PUR − The new heart of ROTEX® Today‘s spider compounds are restricted within certain limits with extreme applications. For the new heart of our ROTEX® we have defined new standards: T-PUR. For the new material we have improved our standards mainly with regard to fatigue strength and temperature resistance compared to standard elastomers, keeping all other positive technical characteristics such as damping and resistance to wear unchanged. Thus, the new material can be used with temperatures from -50 °C to +150 °C. Subject to the higher service life the maintenance intervals and as a result the costs can be reduced. The new T-PUR material is used as a spider in ROTEX® jaw couplings from size 14 to size 90. From size 100 the spider consists of double tooth segments (DZ) as a standard. Coupling selection

Service factor temperature St
	-50 °C	-30 °C +30 °C	+40 °C	+50 °C	+60 °C	+70 °C	+80 °C	+90 °C	+100 °C	+110 °C	+120 °C
T-PUR	1,0	1,0	1,1	1,2	1,3	1,45	1,6	1,8	2,1	2,5	3,0
PUR	–	1,0	1,2	1,3	1,4	1,55	1,8	2,2	–	–	–