This is a Cub Cadet 42" 48" 50" 54" Mower Deck Ball Bearing.  Part No. 941-0524 (19Cbx3)

Cub Cadet 19A40012 (19A40012100) - Cub Cadet 42" Stamped Deck (2011) - Mower Deck - 42-Inch Stamped
Cub Cadet 19A40012 (19A40012100) - Cub Cadet 42" Stamped Deck (2012) - Mower Deck 42-Inch Stamped
Cub Cadet 19A40012 (19A40012100) - Cub Cadet 42" Stamped Deck (2013) - Stamped Deck 42-Inch
Cub Cadet 19A40013 (19A40013100) - Cub Cadet 50" Stamped Deck (2011) - Mower Deck - 50-Inch Stamped
Cub Cadet 19A40013 (19A40013100) - Cub Cadet 50" Stamped Deck (2012) - Mower Deck 50-Inch Stamped
Cub Cadet 19A40013 (19A40013100) - Cub Cadet 50" Stamped Deck (2013) - Stamped Deck 50-Inch
Cub Cadet 19A40014 (19A40014100) - Cub Cadet 54" Stamped Deck (2011) - Mower Deck - 54-Inch Stamped
Cub Cadet 19A40014 (19A40014100) - Cub Cadet 54" Stamped Deck (2012) - Mower Deck 54-Inch Stamped
Cub Cadet 19A40014 (19A40014100) - Cub Cadet 54" Stamped Deck (2013) - Stamped Deck 54-Inch
Cub Cadet 19A40015 (19A40015100) - Cub Cadet 48" Fabricated Deck (2011) - Mower Deck - 48-Inch Fabricated
Cub Cadet 19A40015 (19A40015100) - Cub Cadet 48" Fabricated Deck (2012) - Mower Deck 48-Inch Fabricated
Cub Cadet 19A40015 (19A40015100) - Cub Cadet 48" Fabricated Deck (2013) - Fabricated Deck 48-Inch
Cub Cadet 19A40016 (19A40016100) - Cub Cadet 54" Fabricated Deck (2011) - Mower Deck - 54-Inch Fabricated
Cub Cadet 19A40016 (19A40016100) - Cub Cadet 54" Fabricated Deck (2012) - Mower Deck 54-Inch Fabricated
Cub Cadet 19A40016 (19A40016100) - Cub Cadet 54" Fabricated Deck (2013) - Fabricated Deck 54-Inch
Cub Cadet GT2042 (14W-3DMS010, 14A-3DMS010) - Cub Cadet Garden Tractor (2014) - Mower Deck 42-Inch Stamped
Cub Cadet GT2050 (14A-3JMP010) - Cub Cadet Garden Tractor (2014) - Mower Deck 50-Inch Stamped
Cub Cadet GT2148 (14A-3JEB010) - Cub Cadet Garden Tractor (2014) - Mower Deck 48-Inch Fabricated
Cub Cadet GTX2154 (14A-3GEC010, 14A-3GE-010) - Cub Cadet Tractor (2014) - Mower Deck 54-Inch Fabricated
Cub Cadet GTX2154LE (14W-3GEC010) - Cub Cadet Garden Tractor (2011) - Mower Deck - 54-Inch Fabricated
Cub Cadet LE100 (25B-552J710) - Cub Cadet Edger (2014) - General Assembly