If you are bothered about the K02520XP0 25mm x 65mm x 20mm Thin Section Bearings prices
Model = 71904ACEGA/P4A 719 = Angular contact ball bearing in accordance with ISO dimension series 19 04 = 20mm bore diameter ACE = 25 deg contact angle
CKD Air Cylinder SCW-00-80B-250-T2H-D
Product Number K10020XP0 System of Measurement Metric Bearing Type Ball For Load Direction Four Point Contact Construction Single Row Seal Type Open Series 20mm Bore Dia 100mm Bore Dia Tolerance -0
M 70 = Medium series bearing USOC = Hybrid double row DB spindle bearing with ceramic balls / fibre cage 15 = 15mm bore A21 = 21 degree contact angle 0 = Tolerance class inner ring: more accurate than P2 or ABEC 9 I = Tolerance class outer ring: more accurate than P4 or ABEC 7 M = Medium preload
ACE50X55G
Airtac Compact Air Cylinder, Double Acting Spindle Bearings / High Precision Angular Ball Bearings If you are bothered aboutACE50X55G Airtac Compact Air Cylinder, Double Acting Compact pneumatic cylinder, double acting, 50mm bore, 55mm stroke, without magnet, rod with female thread, G thread type Acting Type Double Acting Airtac ace Compact Air Cylinder ISO21287 Airtac Product Series Airtac ACE Compact Air Cylinder ISO21287 Bore Size 50mm Brand Airtac Component Type Compact Air Cylinder Magnet Without Magnet Rod Type Female Thread Stroke Length 55mm Thread Type G