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Akozon U Groove Bearing, 10pcs U624ZZ U Groove Ball Bearing Guide Pulley 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 ?Size?: Bearings have 1.8mm deep U groove that generally ride on a rail or in many linear motion systems such as 3D printer, quadcopter or ship model, 5x24x7mm U Groove Nylon Round Pulley Wheel Roller For 3.8mm Rope Ball . Please allow 1-3mm error due to manual measurement. please make sure you 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30. Qty:1 U GROOVE: Bearings have a 1.8mm deep U groove that generally ride on a rail or track. 0840UU 8x40x20.7mm Nylon Coated U-Groove Guide Pulley Wheel Roller Bearing, U Type Groove . Model: U624ZZ. SG15-2RS U Groove pulley ball bearings 5*17*8*9.75 mm Track guide roller bearing Bearing Model Number: SG15RS; Bearing Stock: Yes; Stand: ISO9001Only $1.37,buy U604ZZ U-groove Guide Wheel Roller Bearing at Gearbest Store with free Model: U604ZZ 5 Star 29; 4 Star 3; 3 Star 0; 2 Star 0; 1 Star 0. U GROOVE PLASTIC GUIDE ROLLERS. GRL-P-R-SUS Y GROOVE GUIDE ROLLERS (DOUBLE-ROW ANGULAR CONTACT BALL BEARING). GRL-SWA-Y Rails For Guide Rollers for this product U GROOVE GUIDE ROLLERS 3. 7650. 3300. 2260. 3700. 1360. 840. Basic Static Load Rating. Basic Load Rating. 16 Jun 2010