The Timken ® Syber ® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.
A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.
Alex Waye, Timken Application Engineer, shows you how to instantly compute tangential, radial, and axial forces for better design decisions.
                            Part Number | 
                        
                            Series | 
                        
                            d - Bore | 
                        
                            D - Cup Outer Diameter | 
                        
                            B - Cone Width | 
                        
                            C - Double Cup Width | 
                        
                            T - Bearing Width across Cones | 
                        
                            C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) | 
                        
                            C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) | 
                        
                            CAD | 
                                                        
|---|---|---|---|---|---|---|---|---|---|
| 385AS - 384XD | Series N/A 385 | d - Bore N/A 2 in50.80 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5300 lbf23600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 35600 lbf158000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 386AX - 384XD | Series N/A 385 | d - Bore N/A 1 7/8 in47.625 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5300 lbf23600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 35600 lbf158000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 385AX - 384XD | Series N/A 385 | d - Bore N/A 2 in50.80 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 385X - 384XD | Series N/A 385 | d - Bore N/A 2.1654 in55.001 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 386A - 384XD | Series N/A 385 | d - Bore N/A 1 7/8 in47.625 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 388A - 384XD | Series N/A 385 | d - Bore N/A 2.2650 in57.531 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 389AS - 384XD | Series N/A 385 | d - Bore N/A 2.1250 in53.975 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 389A - 384XD | Series N/A 385 | d - Bore N/A 2.1250 in53.975 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 389 - 384XD | Series N/A 385 | d - Bore N/A 2.1880 in55.575 mm | D - Cup Outer Diameter N/A 3.937 in100 mm | B - Cone Width N/A 0.8640 in21.946 mm | C - Double Cup Width N/A 3.7640 in95.606 mm | T - Bearing Width across Cones N/A 4.1389 in105.128 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 6280 lbf28000 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 42200 lbf188000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 397 - 394D | Series N/A 395 | d - Bore N/A 2.3622 in60 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 395X - 394D | Series N/A 395 | d - Bore N/A 2 1/2 in63.500 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 395-S - 394D | Series N/A 395 | d - Bore N/A 2.6250 in66.675 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 390 - 394D | Series N/A 395 | d - Bore N/A 2 1/4 in57.15 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 395CS - 394D | Series N/A 395 | d - Bore N/A 2.6250 in66.675 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.9230 in23.444 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.1764 in55.281 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 395A - 394D | Series N/A 395 | d - Bore N/A 2.6250 in66.675 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 395 - 394D | Series N/A 395 | d - Bore N/A 2 1/2 in63.500 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 392 - 394D | Series N/A 395 | d - Bore N/A 2 7/16 in61.913 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 390A - 394D | Series N/A 395 | d - Bore N/A 2 1/2 in63.500 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 399A - 394D | Series N/A 395 | d - Bore N/A 2 11/16 in68.263 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 396 - 394D | Series N/A 395 | d - Bore N/A 1.9685 in50 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 399AS - 394D | Series N/A 395 | d - Bore N/A 2 11/16 in68.263 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 390 - 394DC | Series N/A 395 | d - Bore N/A 2 1/4 in57.15 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 392 - 394DC | Series N/A 395 | d - Bore N/A 2 7/16 in61.913 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 399A - 394DC | Series N/A 395 | d - Bore N/A 2 11/16 in68.263 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         | 
                                                                    
| 399AS - 394DC | Series N/A 395 | d - Bore N/A 2 11/16 in68.263 mm | D - Cup Outer Diameter N/A 4.3307 in110 mm | B - Cone Width N/A 0.8660 in21.996 mm | C - Double Cup Width N/A 1.8125 in46.038 mm | T - Bearing Width across Cones N/A 2.0624 in52.385 mm | C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) N/A 5760 lbf25600 N | C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) N/A 38700 lbf172000 N | 
                                    
                                        CAD                                                    
 N/A                                                         |