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SK Cam follower with internal hexagonat head side of stud SM.. Bearing filled with a special grease;the two figures following SM identify the actual grease /SORT Gauge of the needle rollers of anassembly. The figures following indicate the gauge limits in µm, e.g. KZK 18 × 24 × 13/SORT − 1 − 3 S0 Bearing, the rings or washers ofwhich have been stabilised for operating temperatures up to + 150 °C S1 Bearing, the rings or washers ofwhich have been stabilised for operating temperatures up to + 200 °C S2 Bearing, the rings or washers ofwhich have been stabilised for operating temperatures up to

Needle roller bearings (4703 /IE) - 5564 2

+ 250 °C TN Injection moulded glass fibre reinforced polyamide 6,6 cage V Full complement of rollers (no cage) VGS Preground raceway on inner ring X Support roller and cam followerwith cylindrical runner surface onthe outer ring instead of standardcrowned runner surface Z Bearing with cover ZTN Z + TN ZW Double row cage ZWTN ZW + TN 2ZL Support roller with two lamellar seals arranged between grooves inthe outer ring shoulders and in theshoulders of the non-integral flangerings 25