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)

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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
UC305 25 62 38 20 15 23 6 M6×1 5.4 22400 11500 0.35
UC305-13 13/16 2.4409 1.4961 0.7874 0.591 0.906 0.236 1/4-28UNF 0.213 22400 11500 0.4
UC305-14 7/8 2.4409 1.4961 0.7874 0.591 0.906 0.236 1/4-28UNF 0.213 22400 11500 0.38
UC305-15 15/16 2.4409 1.4961 0.7874 0.591 0.906 0.236 1/4-28UNF 0.213 22400 11500 0.36
UC305-16 1 2.4409 1.4961 0.7874 0.591 0.906 0.236 1/4-28UNF 0.213 22400 11500 0.35
UC306 30 72 43 23 17 26 6 M6X1 5.7 26700 15000 0.56
UC306-17 1/16 2.8346 1 .6929 0.9055 0.669 1.024 0.236 1/4-28UNF 0.225 26700 15000 0.61
UC306-18 1-1/8 2.8346 1 .6929 0.9055 0.669 1.024 0.236 1/4-28UNF 0.225 26700 15000 0.58
UC306-19 1-3/16 2.8346 1 .6929 0.9055 0.669 1.024 0.236 1/4-28UNF 0.225 26700 15000 0.56
UC307 35 80 48 25 19 29 8 M8X1 6.2 33500 19100 0.71
UC307-20 1-1/4 3.1496 1.8898 0.9843 0. 748 1.142 0.315 5/16-24UNF 0.224 33500 19100 0.77
UC307-21 1-5/16 3.1496 1.8898 0.9843 0. 748 1.142 0.315 5/16-24UNF 0.224 33500 19100 0.74
UC307-22 1-3/8 3.1496 1.8898 0.9843 0. 748 1.142 0.315 5/16-24UNF 0.224 33500 19100 0.71
UC307-23 1-7/16 3.1496 1.8898 0.9843 0. 748 1.142 0.315 5/16-24UNF 0.224 33500 19100 0.68
UC308 40 90 52 27 19 33 10 M10X1 7 40500 24000 0.96
UC308-24 1-1/2 3.5433 2.0472 1.063 0.748 1.299 0.394 3/8-24UNF 0.276 40500 24000 1.01
UC308-25 1-9/16 3.5433 2.0472 1.063 0.748 1.299 0.394 3/8-24UNF 0.276 40500 24000 0.97
UC309 45 100 57 30 22 35 10 0.394 M10X1 7.8 52800 31800 1.28
UC309-26 1-5/8 3.937 2.2441 1.1811 0.866 1.378 0.394 3/8-24UNF 0.307 52800 31800 1.39
UC309-27 1-11/16 3.937 2.2441 1.1811 0.866 1.378 0.394 3/8-24UNF 0.307 52800 31800 1.35

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