Hitachi EX300-3 Excavator Slewing Bearing

Product Details

Series	HM259000
Cone Part Number	HM259047WS
Cup Part Number	HM259010
Design Units	Imperial
Bearing Weight	41.700 Kg
Cage Type	Stamped Steel
d	314.325 mm
D	447.675 mm
B - Cone Width	85.725 mm
C - Cup Width	68.263 mm
B	85.728 mm
R - Cone Backface To Clear Radius1	3.560 mm
r - Cup Backface To Clear Radius2	3.30 mm
da - Cone Frontface Backing Diameter	335.03 mm
db - Cone Backface Backing Diameter	339.09 mm
Da - Cup Frontface Backing Diameter	427.99 mm
Db - Cup Backface Backing Diameter	418.08 mm
Ab - Cage-Cone Frontface Clearance	5.1 mm
Aa - Cage-Cone Backface Clearance	5.3 mm
a - Effective Center Location3	-4.8 mm
C90 - Dynamic Radial Rating (90 million revolutions)4	98500 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5	380000 lbf
C0 - Static Radial Rating	628000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	56500 lbf
K - Factor7	1.74
e - ISO Factor8	0.33
Y - ISO Factor9	1.79
G1 - Heat Generation Factor (Roller-Raceway)	2711.5
G2 - Heat Generation Factor (Rib-Roller End)	280.9
Cg - Geometry Factor	0.181