Designation
                
                With shiled :628
	                
                
                Open type :628ZZ
	                
                
                With seal VV :628VV
	                
                
                With seal DD :628DD
	                
                
                Principal dimensions(mm)
                
                d :8
	                
                
                D :24
	                
                
                B :8
	                
                
                B1 :8
	                
                
                r(min) :0.3
	                
                
                Basic load ratings(N)
                
                Cr :3350
	                
                
                Cor :1430
	                
                
                Basic load ratings{kgf} 
                
                Cr :340
	                
                
                Cor :146
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :28000
	                
                
                D·D :24000
	                
                
                Oil 
                
                Z :34000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :10
	                
                
                db(max) :12
	                
                
                Da(Max) :22
	                
                
                Db(min) :20.5
	                
                
                ra(max) :0.3
	                
                
                rb(max) :0.3
	                
                
                Weight(g) 
                
                Open type :17.2
	                
                
                With shiled :17.4