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UC300 Series Flange units insert bearings

Insert bearings and wide inner ring bearings are used for mounting on shafts without the need for shoulders or adapters. The bearing is locked in place through setscrews or a locking collar. UC Style Insert Bearings have an inner ring that extends on both sides of the bearing and SB Style Insert Bearings extend on one side. 

Both designs however are intended to provide extra shaft support. Sometimes insert bearings are simply standard radial bearings that fit into a housing and these bearings may be purchased as stand-alone products to use as replacements. While standard radial ball bearings must be pressed into a machined shaft, using special installation tools, insert bearings can be slip fit directly onto the shaft.


Price: US $2.5-255 / Piece | 200 Piece/Pieces (Min. Order)

  • Product Details


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Unit No. Dimensions mm in. Dynamic load ratings N Static load ratings N Weight(kg)
d D B C S s1 G ds F

UC309-28 1-3/4 3.937 2.2441 1.1811 0.866 1.378 0.394 3/8-24UNF 0.307 52800 31800 1.3
UC310 50 110 61 32 22 39 12 M12X1.5 8.5 61800 37900 1.65
UC310-29 1-13/16 4.3307 2.4016 1.2598 0.866 1. 535 0.472 1/2-20UNF 0.335 61800 37900 1.97
UC310-30 1-7/8 4.3307 2.4016 1.2598 0.866 1. 535 0.472 1/2-20UNF 0.335 61800 37900 1.74
UC310-31 1-15/16 4.3307 2.4016 1.2598 0.866 1. 535 0.472 1/2-20UNF 0.335 61800 37900 1.68
UC311 55 120 66 34 25 41 12 M12X1.5 9.2 71500 44700 2.07
UC311-32 2 4.7244 2.5984 1.3386 0.984 1.614 0.472 1/2-20UNF 0.362 71500 44700 2.25
UC311-33 2-1/16 4.7244 2.5984 1.3386 0.984 1.614 0.472 1/2-20UNF 0.362 71500 44700 2.18
UC311-34 2-1/8 4.7244 2.5984 1.3386 0.984 1.614 0.472 1/2-20UNF 0.362 71500 44700 2.12
UC311-35 2-3/16 4.7244 2.5984 1.3386 0.984 1.614 0.472 1/2-20UNF 0.362 71500 44700 2.04
UC312 60 130 71 36 26 45 12 M12X1.5 9.8 81700 51800 2.6
UC312-36 2-1/4 5.1181 2.7953 1.4173 1.0236 1.772 0.472 1/2-20UNF 0.386 81700 51800 2.75
UC312-37 2-5/16 5.1181 2.7953 1.4173 1.0236 1.772 0.472 1/2-20UNF 0.386 81700 51800 2.67
UC312-38 2-3/8 5.1181 2.7953 1.4173 1.0236 1.772 0.472 1/2-20UNF 0.386 81700 51800 2.58
UC312-39 2-7/16 5.1181 2.7953 1.4173 1.0236 1.772 0.472 1/2-20UNF 0.386 81700 51800 2.5
UC313 65 140 75 38 30 45 12 M12X1.5 10.5 92500 60000 3.25
UC313-40 2-1/2 5.5118 2.9528 1 .4961 1.181 1.772 0.472 1/2-20UNF 0.413 92500 60000 3.34
UC313-41 2-9/16 5.5118 2.9528 1 .4961 1.181 1.772 0.472 1/2-20UNF 0.413 92500 60000 3.24
UC314 70 150 78 40 33 45 12 M12X1.5 11.1 104500 68000 3.89
UC314-42 2-5/8 5.9055 3.0708 1 .5748 1.299 1.772 0.472 1/2-20UNF 0.437 104500 68000 4.11
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