 
| Dimensions (metric) | d | 20 |  | 
| F | 28.5 | ||
| D | 52 | ||
| B | 21 | ||
| Approx. Wgt. lbs | .500 | ||
| Interchange | FAG | NU 2304 | |
| SKF | NU 2304 | ||
| STEYR | NU 2304 | ||
| * "F" dimension equal to FAG and SKF. Other manufacturers "F" dimension may vary. 1) The above series is available with either: Stamped steel or glass fibre cage - No suffix.Machined bronze cage - suffix "M 2) These bearings are available in C/2, C/3, C/4, W/23 and C/5 internal clearance. 3) Some sizes are available in ABEC #3 (P/6) precision 4) These bearings are available with tapered bore - suffix "K". Consult factory for availability. | |||
| Model No. | Inner Diameter | Outer Diameter | Width | Brand | Type | 
| 21NQ3817 | 21 | 38 | 17 | KOYO | Needle Roller Bearings | 
|---|---|---|---|---|---|
| 22209 E | 85 | 45 | 23 | SKF | Spherical Roller Bearings | 
| 24144-K30-MB-W33 | 220 | 370 | 150 | NKE | Spherical Roller Bearings | 
| 29480-E1-MB | 400 | 710 | 185 | INA | Thrust Roller Bearings | 
| 6200LLB | 10 | 30 | 9 | NTN | Deep Groove Ball Bearings | 
| 6201 | 12 | 32 | 10 | ISB | Deep Groove Ball Bearings | 
| 7006C | 30 | 55 | 13 | NTN | Angular Contact Ball Bearings | 
| KBH 08 | 8 | 15 | NBS | Linear Bearings | |
| K40X47X20 | 40 | 47 | INA | Needle Roller Bearings | |
| NJ2319-E-MPA+HJ2319-E | 95 | 200 | 67 | NKE | Cylindrical Roller Bearings | 
| NA 4838 | 190 | 240 | 50 | NBS | Needle Roller Bearings | 
| NA0-40X62X40ZW | 40,000 | 62,000 | 40,000 | NTN | Needle Roller Bearings | 
| NJ 2230 | 150 | 270 | 73 | NACHI | Cylindrical Roller Bearings | 
| NJ2209-E-TVP3 | 45 | 85 | 23 | NKE | Cylindrical Roller Bearings | 
| NUP304 E | 20 | 52 | 15 | AST | Cylindrical Roller Bearings | 
| SI35TXE-2LS | 35 | SKF | Plain Bearings | ||
| 115HCUL | 75 | 115 | 20 | Barden | ANGULAR CONTACT BALL BEARINGS | 
| AD-220-H | 100 | 180 | 6.5000 | American | CYLINDRICAL ROLLER BEARINGS | 
| S6211.2RSR | 55 | 100 | 21 | FAG | DEEP GROOVE BALL BEARINGS | 
| 130SD31 | 130 | 210 | 64 | Torrington (Old No.) | SPHERICAL ROLLER BEARINGS | 
Hot number:CX 54320 ISO 7315 B Timken FNTKF-3354 NACHI NN3011K INA PCF40 SIGMA QJ 222 N2 ZEN SF629 NACHI UKC208+H2308 FAG N1918K.M1.SP NH MW-23/4 Torrington 23120 INA SL045013PP NSK MFJ-4520 SKF 5312A-2ZNR CONSOLIDATED 16010 ISB 23028 K FAG 31326-X-N11CA FAG 3814-B-2Z-TVH AST AST650 809650 NACHI 40BVVS6-2NSL KOYO AX 45 65 CX AXK 100135 FAG B7230-E-T-P4S SKF BTM 180 AM/HCP4CDB ISO K25x30x13 NTN NJ2209 AST NU207 ETN INA RPNA28/44 INA GE35SW CONSOLIDATED 751122MSP/5
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