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Type FB-2 Wing And 2 Grooved Bearings
| Type | Part No. | D/CtoC mm | L1/L2 mm | Spicer | Precision | Caterpillar | Bearing Type | |
| FB | 5-2031X | 25.4/33.34 | 55.2/79.22 | 5-2031X | 508 | 2D3765 | 2LWT,2RND | |
| FB | 5-2033X | 25.4/33.34 | 54.5/79 | 5-2033X | 522 | 6D2529 | 2LWD,2RND | |
| FB | 5-4016X | 28.5/36.5 | 77.9/108 | 5-4016X | 546 | 2LWD,2RND | ||
| FB | 5-5015X | 33.35/42.8 | 79.2/115 | 5-5015X | 557 | 2LWD,2RND | ||
| FB | 5-5154X | 33.35/42.85 | 84.023/114.96 | 5-5154X | 2HWD,2RND | |||
| FB | W-6139 | 33.35/42.88 | 104.25/140.25 | 565 | 2HWD,2RND | |||
| FB | HD205-3 | 41.5/49.2 | 104.5/148.4 | 483 | 2HWD,2RND | |||
| FB | GU7100 | 25.4/33 | 38.8/65 | |||||
| FB | GU7100L | 25.4/33 | 38.8/65 | |||||