MR74-2RS Deep Groove Ball Bearings, ID 4mm x OD 7mm x Width 2.5mm Miniature Bearings, Double Rubber Sealed Ball Bearing Pre-Lubricated Chrome Steel Blue Z2 Lever 10pcs
MR84-2RS Blue Sealed Bearings,(I.D.=4mm, O.D.=8mm, Thickness=3mm);
Precision metric miniature ball bearing, both sides rubber sealed, pre-lubricated with grease
Made of chrome steel (GCr15), durability and resistance to under heavy loads
Low noise Z2, ABEC Tolerance 1 (P0), High speed. High temperature resistance. Resistance to high load.
Apply for electric motors to robotics, RC cars, RC helicopters, RC planes, RC trucks, lab equipment, jewelry, hand piece, radio controlled models, anemometers, miniature gearboxes, small motors and other fields.