Structure of bearing model 684zz :Inner & outer ring, cage, steel balls, grease, shield
Our bearing is pre-lubricated with grease,The main purpose of lubrication is to reduce friction that may cause premature failure.
Nylon plastic retainers,Use for high speed rotation and low noise levels，The ZZ shield cannot be removed
Bearing is made of chrome steel material,The typical surface hardness for bearing components made from this material ranges from 60-64 on the Rockwell hardness C scale (Rc).
Bore Dia (d): 4.000 mm Outer Dia (D): 9.000 mm Width (B): 4.000 mm
2 Set Fits for L68149 Trailer Bearings Kit, 1-1/16'' Axles Wheel Hub，LM12749/LM12710,ID 0.8656" x OD 1.7810",TB Seal OD 2.33'', Dust Cover and Cotter Pin.
KWD 9
3802 VRS MAX Cartridge Bearings, Size 15x24x7mm Chrome Steel Black Sealed with Grease, 3802LLU Cart Double Row Bearing for Hubs Pivot, (Pick of 4Pcs)
KWD 9.500
683ZZ Bearing ABEC-7 3x7x3 mm Miniature 683 ZZ Ball Bearings 618/3ZZ EMQ Z3V3 10PCS
KWD 5
19317 2RS Ball Bearing, 19.05x31x7mm Chromium Steel Direct Press Dust Seal, 1905317 MR31190-RS LLB Bearings for Bike (Pick of 2Pcs)
KWD 6.500
