| Old No. | 638/4-ZZ | ![]() Two Shields ZZ | |
| Dimensions (metric) | d | 4 | |
| D | 9 | ||
| B | 4 | ||
| Approx. Wgt. lbs | .0030 | ||
| Interchange | ADR | 638/4ZZ | |
| ISC | 684ZZS | ||
| Nachi | 684ZZ | ||
| NMB | L-940ZZ | ||
| NTN | W684ZZA | ||
| RMB | ULZ409 | ||
| SKF | 638/4ZZ | ||
| 1) Also available with one shield - suffix “Z”. No change in width dimensions. | |||
| Model No. | Inner Diameter | Outer Diameter | Width | Brand | Type |
| 11165XR/11300 | 42 | 17,384 | KOYO | Tapered Roller Bearings | |
|---|---|---|---|---|---|
| 13181/13318 | 46,038 | 80,962 | 19,05 | NSK | Tapered Roller Bearings |
| 15103/15245 | 26,157 | 62 | 19,05 | CX | Tapered Roller Bearings |
| 240/630BK30 | 630 | 920 | 290 | NTN | Spherical Roller Bearings |
| 30248 | 240 | 440 | 79 | ISO | Tapered Roller Bearings |
| 413144 | 220 | 370 | 120 | NTN | Tapered Roller Bearings |
| 50BNR29XV1V | 50 | 72 | 14 | NSK | Angular Contact Ball Bearings |
| 562921M | 109 | 134 | NTN | Thrust Ball Bearings | |
| 7010CDF | 50 | 80 | 16 | NACHI | Angular Contact Ball Bearings |
| AST850SM 2830 | 28 | 32 | AST | Plain Bearings | |
| CX017 | CX | Wheel Bearings | |||
| ESPAE204 | 20 | SNR | Bearing Units | ||
| HC STA3072-9LFT | 30 | 72 | 24 | KOYO | Tapered Roller Bearings |
| HR33020J | 100 | 150 | 39 | NSK | Tapered Roller Bearings |
| K37X42X13H | 37 | 42 | KOYO | Needle Roller Bearings | |
| S7024 CE/P4A | 120 | 180 | 28 | SKF | Angular Contact Ball Bearings |
| 231/530MB | 530 | 870 | 272 | FAG | SPHERICAL ROLLER BEARINGS |
| 48026 | 26 | 52 | .5905 | New Departure | DEEP GROOVE BALL BEARINGS |
| FPCA900 | 9.0000 | 9.5000 | .2500 | SKF | DEEP GROOVE BALL BEARINGS |
| QJ-10/670 | 670 | 980 | 136 | CONSOLIDATED | ANGULAR CONTACT BALL BEARINGS WITH SPLIT INNER RACE |
Hot number:FAG 23252-B-K-MB+AH2352G CX 52428 ISO 596/592A NTN 6014LU KOYO 7906C SKF BAH0040 KOYO BHTM1512A ISO NN3096 K KOYO NU1022 NKE NUP407-M SIGMA RT-768 FAG (Old No.) 22340EAS.MA.C4.F80 FAG HCB71806C.TPA.P4 NICE FR-24 STEYR 6317 FAG 2209-K-2RS-TVH-C3 ISO 7000 BDF CX 7201 A-UO NTN BK2018L FAG FW9241 KOYO HC STA3064LFT ISO HK4212 ILJIN IJ131024 CRAFT NA4928 LS SABP6N FAG H3184 American 120BT512 SKF 52315 PTI SUCTF211-32 CONSOLIDATED 5302E-ZZ
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