This bearing part number is 6812 and The bearings has the following Dimensions:6812 Full Ceramic Bearings 60X78X10 mm
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51101 Full Ceramic Thrust Ball Bearings (12X26X9)
TACQ100X20G Airtac Compact Guided Air Cylinder
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ACE50X200T Airtac ACE Compact Air Cylinder, Double Acting Radial Spherical Plain Bearings GEZ..ES This bearing part number isACE50X200T Airtac ACE Compact Air Cylinder, Double Acting Compact pneumatic cylinder, double acting, 50mm bore, 200mm stroke, without magnet, rod with female thread, NPT thread type Product Info Acting Type Double Acting Airtac ace Compact Air Cylinder Product Series Airtac ACE Compact Air Cylinder Bore Size 50mm Brand Airtac Component Type Compact Air Cylinder Magnet Without Magnet Rod Type Female Thread Stroke Length 200mm Type of Thread NPT