Agricultural Machinery Bearing ST491A 491A FD-209-RA High Mechanical Efficiency
The ST491A bearing is a Agricultural Machinery Bearing with an inner diameter of 44.450 mm , an outer diameter of 127.00 mm, a width of 101.60 mm. It typically uses P5 grade precision tolerances and features a Steel Retaier cage, Rubber Seals. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
ST491A Agricultural Machinery Bearing Advantages:
1. Ability to withstand sustained vibration and high impact loads
2. Well-designed and high-precision sealing concept, which can operate reliably under various weather conditions
3. Low maintenance or maintenance-free design to ensure high utilization of the machine easy to install.
4. Usually it can provide the whole unit or special design, while the structure is very simple.
| Bearing type | Style | Trunnion | A | B | C | D | E | F | G |
| ST491A | 2 | 1 3/4 RD | 1.687 | 4.000 | 5.000 | 5.000 | 0.531 | ||
| ST491B | 4 | 1 1/2 RD | 1.687 | 4.000 | 5.000 | 5.000 | 0.531 | 0.687 | |
| FD209-1 1/8SQ | 3 | 1 1/8 SQ | 1.687 | 4.000 | 5.000 | 5.000 | 0.531 | 0.687 | |
| FD209-1 1/4SQ | 3 | 1 1/4 SQ | 1.687 | 4.000 | 5.000 | 5.000 | 0.531 | 0.687 | |
| FD211-1 1/2SQ | 3 | 1 1/2 SQ | 2.000 | 4.500 | 5.500 | 5.500 | 0.531 | 0.687 | |
| FD211-1 3/4RD | 2 | 1 3/4 RD | 2.187 | 4.500 | 5.500 | 5.500 | 0.531 | ||
| FD211-1 3/4HX | 1 3/4 HX | 2.188 | 4.500 | 5.500 | 5.500 | 0.531 | |||
| FD211-1 15/16RD | 2 | 1 15/16 RD | 2.187 | 4.500 | 5.500 | 5.500 | 0.531 | ||
| FD211-1 15/16RDC* | 1 15/16 RD | 2.125 | 4.500 | 5.500 | 5.500 | 0.531 | |||
| FD211-2 3/16RD | 2 | 2 3/16 RD | 2.187 | 4.500 | 5.500 | 5.500 | 0.531 |
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