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2203 Self-Aligning Ball Bearing (Pack of 3) is specially designed for 50mm Vibrator Needles and construction machines. Its double row self-aligning design reduces vibration and handles shaft misalignment, ensuring smooth concrete compaction.Built from premium steel, these bearings are rust-proof and pre-lubricated with anti-rust oil, providing extra protection against corrosion and extending service life.With dimensions 17 mm ID × 40 mm OD × 16 mm Width, the 2203 bearing is widely used in cement/concrete vibrator needles, motors, pumps, gearboxes, and other industrial equipment.This Pack of 3 is perfect for contractors and machine operators who need reliable spare parts for continuous construction site use.