REV FIRST Global, Руководство по эксплуатации

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FIRST Global Building Guide Created by REV Robotics 2019, Licensed Under CC BY-SA 17
These Delrin bearings provide stable, low friction axle support in our nylon brackets. The two materials were carefully
chosen because they have a very low coefficient of friction and are also incompatible materials, meaning that they will not
stick together under extreme heat. REV Robotics Plastic Bearings come in three varieties (Table 4).
Table 4: Bearings
End Cap Bearing
REV-41-1322
Short Through-bore Bearing
REV-41-1326
Long Through-Bore Bearing
REV-41-1329
End cap bearings are closed on one end, so when these bearings are placed on both ends of a shaft and fit into
motion brackets the shaft is free to rotate but is fully constrained laterally (sideways).
Short Through-bore Bearings are low profile pass through bearings intended to seat directly into any of the
motion brackets. These low profile bearings have a 3mm contact surface which makes them flush with one side
of the motion plate. Shaft collars are recommended to laterally constrain the shaft.
Long Through-bore Bearings are full depth bearings which can be used with any of the motion brackets or the
bearing pillow block. Unlike the end cap bearing, because a shaft can pass though this bearing it can be used
with the bearing pillow block to have a pivot between to fixed shaft ends. Shaft collars are recommended to
laterally constrain the shaft.
There are number of different bearing, shaft collar, and motion bracket combinations that are recommended. See Figure
30 for a visual representation of some of the recommended combinations.
Figure 30: Bearing Assembly Combination Recommendations