MATERIAL AND CONVEYOR DATA PPI idlers meet or exceed CEMA requirements for load, life, and dimensions. Load limits shown in the following tables reflect CEMA methods. Basic calculations use bearing L10 requirements at 500 ... D 60,000 E 60,000 CEMA DESIGN LIMIT FPM 4" 534 5" 654 6" 758 7" 916 GETTING STARTED 1 2 3 3 4