Catalog
    Imperial Deep Groove Ball Bearings
    Deep Groove Ball Bearings
        
    
    
            
                
                    
                        
                
            
                
            
        
        
    
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    Bore Diameter (mm)
Outside Diameter (mm)
Dimension B - Open (mm)
Dimension B - Shield (mm)
Dynamic (Cr) Basic Load Rating (kN)
                            Item # | 
                        
                            Bore Diameter | 
                        
                            Outside Diameter | 
                        
                            Dimension B - Open | 
                        
                            Dimension B - Shield | 
                        
                            Dynamic (Cr) Basic Load Rating | 
                        
                            CAD | 
                                                        
|---|---|---|---|---|---|---|
| R2 | Bore Diameter N/A 3.175 mm | Outside Diameter N/A 9.525 mm | Dimension B - Open N/A 3.969 mm | Dimension B - Shield N/A 3.969 mm | Dynamic (Cr) Basic Load Rating N/A 640 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R2A | Bore Diameter N/A 3.175 mm | Outside Diameter N/A 12.7 mm | Dimension B - Open N/A 4.366 mm | Dimension B - Shield N/A 4.366 mm | Dynamic (Cr) Basic Load Rating N/A 640 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R144 | Bore Diameter N/A 3.175 mm | Outside Diameter N/A 6.35 mm | Dimension B - Open N/A 2.779 mm | Dimension B - Shield N/A 2.779 mm | Dynamic (Cr) Basic Load Rating N/A 294 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R155 | Bore Diameter N/A 3.969 mm | Outside Diameter N/A 7.938 mm | Dimension B - Open N/A 2.779 mm | Dimension B - Shield N/A 3.175 mm | Dynamic (Cr) Basic Load Rating N/A 392 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R3 | Bore Diameter N/A 4.763 mm | Outside Diameter N/A 12.7 mm | Dimension B - Open N/A 3.969 mm | Dimension B - Shield N/A 4.798 mm | Dynamic (Cr) Basic Load Rating N/A 1310 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R156 | Bore Diameter N/A 4.763 mm | Outside Diameter N/A 7.938 mm | Dimension B - Open N/A 2.779 mm | Dimension B - Shield N/A 3.175 mm | Dynamic (Cr) Basic Load Rating N/A 392 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R166 | Bore Diameter N/A 4.763 mm | Outside Diameter N/A 9.525 mm | Dimension B - Open N/A 3.175 mm | Dimension B - Shield N/A 3.175 mm | Dynamic (Cr) Basic Load Rating N/A 715 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R186 | Bore Diameter N/A 4.763 mm | Outside Diameter N/A 12.7 mm | Dimension B - Open N/A 2.779 mm | Dimension B - Shield N/A 3.969 mm | Dynamic (Cr) Basic Load Rating N/A 1313 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1601 | Bore Diameter N/A 4.763 mm | Outside Diameter N/A 17.463 mm | Dimension B - Open N/A 6.35 mm | Dimension B - Shield N/A 7.938 mm | Dynamic (Cr) Basic Load Rating N/A 1511 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R4 | Bore Diameter N/A 6.35 mm | Outside Diameter N/A 15.875 mm | Dimension B - Open N/A 4.978 mm | Dimension B - Shield N/A 4.978 mm | Dynamic (Cr) Basic Load Rating N/A 1470 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R4A | Bore Diameter N/A 6.35 mm | Outside Diameter N/A 19.05 mm | Dimension B - Open N/A 5.556 mm | Dimension B - Shield N/A 7.144 mm | Dynamic (Cr) Basic Load Rating N/A 2410 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R168 | Bore Diameter N/A 6.35 mm | Outside Diameter N/A 9.525 mm | Dimension B - Open N/A 3.175 mm | Dimension B - Shield N/A 3.175 mm | Dynamic (Cr) Basic Load Rating N/A 421 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R188 | Bore Diameter N/A 6.35 mm | Outside Diameter N/A 12.7 mm | Dimension B - Open N/A 3.175 mm | Dimension B - Shield N/A 4.763 mm | Dynamic (Cr) Basic Load Rating N/A 833 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1602 | Bore Diameter N/A 6.35 mm | Outside Diameter N/A 17.463 mm | Dimension B - Open N/A 6.35 mm | Dimension B - Shield N/A 7.938 mm | Dynamic (Cr) Basic Load Rating N/A 1511 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R1810 | Bore Diameter N/A 7.938 mm | Outside Diameter N/A 12.7 mm | Dimension B - Open N/A 3.969 mm | Dimension B - Shield N/A 3.969 mm | Dynamic (Cr) Basic Load Rating N/A 882 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1603 | Bore Diameter N/A 7.938 mm | Outside Diameter N/A 22.225 mm | Dimension B - Open N/A 7.144 mm | Dimension B - Shield N/A 8.731 mm | Dynamic (Cr) Basic Load Rating N/A 2547 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1605 | Bore Diameter N/A 7.938 mm | Outside Diameter N/A 23.019 mm | Dimension B - Open N/A 7.938 mm | Dimension B - Shield N/A 7.938 mm | Dynamic (Cr) Basic Load Rating N/A 2547 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R6 | Bore Diameter N/A 9.525 mm | Outside Diameter N/A 22.225 mm | Dimension B - Open N/A 5.556 mm | Dimension B - Shield N/A 7.144 mm | Dynamic (Cr) Basic Load Rating N/A 3350 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1604 | Bore Diameter N/A 9.525 mm | Outside Diameter N/A 22.225 mm | Dimension B - Open N/A 7.144 mm | Dimension B - Shield N/A 8.731 mm | Dynamic (Cr) Basic Load Rating N/A 2547 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1606 | Bore Diameter N/A 9.525 mm | Outside Diameter N/A 23.019 mm | Dimension B - Open N/A 7.938 mm | Dimension B - Shield N/A 7.938 mm | Dynamic (Cr) Basic Load Rating N/A 2547 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1614 | Bore Diameter N/A 9.525 mm | Outside Diameter N/A 28.575 mm | Dimension B - Open N/A 9.525 mm | Dimension B - Shield N/A 9.525 mm | Dynamic (Cr) Basic Load Rating N/A 3921 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1607 | Bore Diameter N/A 11.1125 mm | Outside Diameter N/A 23.019 mm | Dimension B - Open N/A 7.938 mm | Dimension B - Shield N/A 7.938 mm | Dynamic (Cr) Basic Load Rating N/A 3556 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1615 | Bore Diameter N/A 11.1125 mm | Outside Diameter N/A 28.575 mm | Dimension B - Open N/A 9.525 mm | Dimension B - Shield N/A 9.525 mm | Dynamic (Cr) Basic Load Rating N/A 3921 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 1620 | Bore Diameter N/A 11.1125 mm | Outside Diameter N/A 34.925 mm | Dimension B - Open N/A 11.1125 mm | Dimension B - Shield N/A 11.1125 mm | Dynamic (Cr) Basic Load Rating N/A 5881 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| R8 | Bore Diameter N/A 12.7 mm | Outside Diameter N/A 28.575 mm | Dimension B - Open N/A 6.35 mm | Dimension B - Shield N/A 7.938 mm | Dynamic (Cr) Basic Load Rating N/A 5110 kN | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
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