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By certification 
Pitch of Bearing Cross-bar Specification of bearing bar load
(width×thickness)
20×3 25×3 32×3 40×3
30 100 G203/30/100 G253/30/100 G323/30/100 G403/30/100
50 G203/30/50 G253/30/50 G323/30/50 G403/30/50
100 G203/40/100 G253/40/100 G323/40/100 G403/40/100
40 50 G203/40/50 G253/40/50 G323/40/50 G403/40/50
60 50 G253/60/50 G253/60/50 G403/60/50
(width×thickness)
20×3 25×3 32×3 40×3
30 100 G203/30/100 G253/30/100 G323/30/100 G403/30/100
50 G203/30/50 G253/30/50 G323/30/50 G403/30/50
100 G203/40/100 G253/40/100 G323/40/100 G403/40/100
40 50 G203/40/50 G253/40/50 G323/40/50 G403/40/50
60 50 G253/60/50 G253/60/50 G403/60/50
