Bearing and oil seal overhaul kit POLINI 282.0005 crankshaft cone 19 mm for VESPA 50 125 SPECIAL PK XL NLR APE 50 FL FL2 FL3 RST MIX

Crankshaft bearing overhaul kit POLINI 282.0005 cone 19 mm for VESPA 50 125 SPECIAL PK XL NLR APE 50 FL FL2 FL3 RST MIX Bearing 17-47-14 C4 STEEL - NAILED / C4 20-47-14 C4 STEEL - NAILED / C4 Oil seal 19 -32-7 PTFE + FKM 22.7-47-7/7.5 PTFE + FKM When overhauling an engine it is mandatory to replace both the oil seals and the main bearings as they support the crankshaft and run at high speeds . This is why for a better and specific overhaul of the crankshaft for the most popular scooter, Vespa and moped models, Polini has created a special kit. The Polini kit is complete with oil seals and bearings and is perfectly interchangeable with the original spare parts. The bearings for the crankshaft are made of steel with a C4 nailed cage. The oil seals are made of FKM (fluorocarbon rubber) to resist the highest thermal stress, they have the sealing lip coated in PTFE (polytetrafluoroethylene); this feature, in addition to ensuring a longer life compared to standard ones, means that they have a significantly lower friction coefficient, thus guaranteeing less dispersion and at the same time maintaining lower temperatures. The Polini crankshaft overhaul kit is perfect for original engines but also adapts perfectly to upgraded engines.