Bearings (32 Choices)
Bearings constrain relative motion and reduce friction between moving parts.
VEXpro offers all the bearings most commonly used by FIRST ® teams, and also replacement bearings for all the "odd sized" bearings used in VEXpro gearboxes.
Note: Please be aware that ThunderHex bearings are 13.75mm round bearings, designed to fit a ThunderHex shaft. For more information about ThunderHex, please click here.
ThunderHex Stock works in all applications where 1/2" Hex Shaft will work and also includes rounded corners. These rounded corners allow the shaft to pilot inside a 13.75 mm round (ThunderHex) Bearing instead of a standard 1/2" Hex Bearing. This eliminates some difficult manufacturing tolerances and results in a MUCH smoother end result. Simply put, ThunderHex Bearings are the best way to create smooth-running hex shafts, and ThunderHex Stock helps you accomplish this without a lathe.




Also, since you're essentially putting a round peg in a round hole, no more struggling to align the hex of your shaft with the hex hole of your bearing.
The 0.500" hex bearings (217-2734) have been updated for the 2015 season to a version 2 (217-3875). This bearing features a larger inner race for additional strength and durability.


All Flanged Hex Bearings
All Flanged Round Bearings
All Radial Bearings
217-4270 (13.75mm (1/2" ThunderHex) ID x 1.125" OD x 0.313" WD (Radial Bearing)
"Thunder" Bearings
(217-5830) .302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing) : 0.04 lb
(217-5829) 10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing) : 0.04 lb
(217-4006) 13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing) : 0.05 lb
(217-4270) 13.75mm (1/2" ThunderHex) ID x 1.125" OD x 0.313" WD (Radial Bearing) : 0.048 lb
Flanged Bearings
(217-2735) 0.375" Hex ID x 1.125" OD x 0.313" WD (Flanged Bearing) : 0.06 lb
(217-3875) 0.500" Hex ID x 1.125" OD x 0.313" WD (Flanged Bearing v2) : 0.052 lb
(217-2733) 0.375" ID x 0.875" OD x 0.280" WD (Flanged Bearing) : 0.031 lb
(217-2732) 0.375" ID x 1.125" OD x 0.313" WD (Flanged Bearing) : 0.063 lb
(217-2731) 0.500" ID x 1.125" OD x 0.313" WD (Flanged Bearing) : 0.058 lb
(217-2789) 0.750" ID x 1.375" OD x 0.437" WD (Flanged Bearing) : 0.091 lb
Radial Bearings
(217-3246) 0.188" ID x 0.500" OD x 0.196" WD (Radial Bearing): 0.01 lb
(217-2788) 0.250" ID x 0.375" OD x 0.125" WD (Radial Bearing): 0.01 lb
(217-3489) 0.250" ID x 0.500" OD x 0.188" WD (Radial Bearing): 0.01 lb
(217-3239) 0.375" ID x 0.875" OD x 0.281" WD (Radial Bearing): 0.03 lb
(217-3337) 0.500" ID x 0.875" OD x 0.281" WD (Radial Bearing): 0.026 lb
(217-3109) 0.500" ID x 1.125" OD x 0.313" WD (Radial Bearing): 0.05 lb
(217-2742) 15mm ID x 28mm OD x 7mm WD (Radial Bearing): 0.039 lb
(217-2741) 17mm ID x 26mm OD x 5mm WD (Radial Bearing): 0.023 lb
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"Thunder" Bearings
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.302" (1/4" ThunderSquare) ID x 0.875" OD x 0.280" WD (Flanged Bearing) (217-5830)
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13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Flanged Bearing) (217-4006)
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10.25mm (3/8" ThunderHex) ID x 0.875" OD x 0.280" WD (Flanged Bearing) (217-5829)
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13.75mm (1/2" ThunderHex ID) x 1.125" OD x 0.313" WD (Radial Bearing) (217-4270)
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Flanged Bearings
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0.500" ID x 1.125" OD x 0.313" WD (Flanged Bearing) (217-2731)
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0.375" ID x 1.125" OD x 0.313" WD (Flanged Bearing) (217-2732)
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0.500" Hex ID x 1.125" OD x 0.313" WD (Flanged Bearing v2) (217-3875)
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0.375" ID x 0.875" OD x 0.280" WD (Flanged Bearing) (217-2733)
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0.750" ID x 1.375" OD x 0.437" WD (Flanged Bearing) (217-2789)
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0.375" Hex ID x 1.125" OD x 0.313" WD (Flanged Bearing) (217-2735)
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Radial Bearings
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0.500" ID x 0.875" OD x 0.281" WD (Radial Bearing) (217-3337)
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17mm ID x 26mm OD x 5mm WD (Radial Bearing) (217-2741)
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0.500" ID x 1.125" OD x 0.313" WD (Radial Bearing) (217-3109)
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0.250" ID x 0.500" OD x 0.188" WD (Radial Bearing) (217-3489)
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0.188" ID x 0.500" OD x 0.196" WD (Radial Bearing) (217-3246)
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0.375" ID x 0.875" OD x 0.281" WD (Radial Bearing) (217-3239)
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0.250" ID x 0.375" OD x 0.125" WD (Radial Bearing) (217-2788)
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15mm ID x 28mm OD x 7mm WD (Radial Bearing) (217-2742)
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