Number of Teeth | 
                                                                        N/A 21 | 
                                                                                Dp - Pitch Diameter | 
                                                                        N/A 4.193 in | 
                                                                                Do - Outside Diameter | 
                                                                        N/A 4.520 in | 
                                                                                d - Plane Bore | 
                                                                        N/A 0.630 in | 
| Max. Plain Bore1 | N/A 2.008 in | 
                                                                                Pitch | 
                                                                        N/A 5/8 in | 
                                                                                Caliper Diameter | 
                                                                        N/A 3.795 in | 
                                                                                Dr - Roller Diameter | 
                                                                        N/A 0.4 in | 
                                                                                Inside Width | 
                                                                        N/A 0.38 in | 
                                                                                Style | 
                                                                        N/A E | 
                                                                                L | 
                                                                        N/A 1.772 in | 
                                                                                LTB | 
                                                                        N/A 0.984 in | 
                                                                                Nominal Tooth Width | 
                                                                        N/A 0.361 in | 
                                                                                T - Plate Thickness | 
                                                                        N/A 1.004 in | 
| Dh - Hub Diameter2 | N/A 2.992 in | 
                                                                                Wt. LBS | 
                                                                        N/A 2.60 lb |