Series | 
                                                                        N/A 28600 | 
                                                                                Cone Part Number | 
                                                                        N/A 28682 | 
                                                                                Cup Part Number | 
                                                                        N/A 28622-B | 
                                                                                Design Unit | 
                                                                        N/A Inch | 
                                                                                Cage Material | 
                                                                        N/A Stamped Steel | 
                                                                                d - Bore | 
                                                                        N/A 2 1/4 in57.15 mm | 
                                                                                D - Cup Outer Diameter | 
                                                                        N/A 3.8437 in97.630 mm | 
                                                                                D1 - Flange Outer Diameter | 
                                                                        N/A 3.9960 in101.498 mm | 
                                                                                B - Cone Width | 
                                                                        N/A 0.9688 in24.608 mm | 
                                                                                C - Cup Width | 
                                                                        N/A 0.7656 in19.446 mm | 
                                                                                C1 - Cup Flange Width | 
                                                                        N/A 0.1560 in3.962 mm | 
                                                                                T1 - Bearing Width to Flange | 
                                                                        N/A 0.3592 in9.124 mm | 
| R - Cone Backface "To Clear" Radius1 | N/A 0.14 in3.600 mm | 
| r - Cup Backface "To Clear" Radius2 | N/A 0.030 in0.8 mm | 
                                                                                da - Cone Frontface Backing Diameter | 
                                                                        N/A 2.56 in65 mm | 
                                                                                db - Cone Backface Backing Diameter | 
                                                                        N/A 2.8 in71 mm | 
                                                                                Da - Cup Frontface Backing Diameter | 
                                                                        N/A 3.74 in95.00 mm | 
                                                                                Ab - Cage-Cone Frontface Clearance | 
                                                                        N/A 0.1 in2.5 mm | 
                                                                                Aa - Cage-Cone Backface Clearance | 
                                                                        N/A 0.04 in1 mm | 
| a - Effective Center Location3 | N/A -0.13 in-3.3 mm |