Series Bearing Bar Spacing Cross Bar Spacing Bearing Bar Specification ( Width * Thickness) ( mm ) ( mm ) 32*5 ( mm ) 40*5 ( mm ) 45*5 ( mm ) 50*5 ( mm ) 55*5 ( mm ) 60*5 ( mm ) 1 30 100 G325/30/100 G405/30/100 G455/30/100 G505/30/100 G555/30/100 G605/30/100 50 G325/30/50 G405/30/50 G4555/30/50 G505/30/50 G555/30/50 G605/30/50 2 40 100 G325/40/100 G405/40/100 G455/40/100 G505/40/100 G555/40/100 G605/40/100 50 G325/40/50 G405/40/50 G455/40/50 G505/40/50 G555/40/50 G605/40/50 3 60 50 G325/60/50 G405/60/50 G455/60/50 G505/60/50 G555/60/50 G605/60/50