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Edge side material must be different from body side material(Two different steels laminated together through forging-one hard layer for long lasting quality against friction and one softer layer that will not brittle while maintaining flexibility
As bezel diameter is small (minimum diameter=36mm)
5 76 84
Material (blade) Stainless steel SUS420 Drilling range 30 30 to 300 mm Packing creation
9055 in Closure Type Open Cage Type Pressed Internal Clearance CN Operating Temperature Range -40 to 250 ºF Seal Material None Dynamic Load Capacity 5250 lbf Seal Type None Static Load Capacity 1830 lbf Precision Rating Class 0 Maximum RPM 8500 rpm Bearing Material High Carbon Chrome Steel Cage Material Steel Finish/Coating Uncoated Harmonization Code 8482
NTN 22252EMD1C3 Spherical Roller Bearing D= 260mm wiha Edge side material must beNTN 22252EMD1C3 Spherical Roller Bearing D= 260mm SPECIFICATIONS PRODUCT DEFINITION d Internal diameter 260 mm D External diameter 480 mm B Bearing Inner ring width 130 mm d2 External diameter inner ring 0 mm D1 Inner diameter outer ring 415 mm rs Min fillet radius 5 mm Number of lubrication holes 8 b Groove width 20 mm k Hole diameter 12 mm Radial clearance class C3 Mass 108 kg Brand NTN 1. Design features and characteristics Spherical roller