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Action Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@actionbearing.com
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Standard duty with set screw lock.

Available with:
  • Set screw or eccentric locking collars.
  • Available in stainless steel and nickel plated styles.
  • Wide inner race
  • B-type or L3-type seals.
UC-Inserts
Unit of Measure
1 2 3 

Item #

(d) Shaft Diameter

(D) Dimension

(Bi) Dimension

(Be) Dimension

(N) Dimension

(M) Dimension

Basic Load Rating

Basic Static Load Rating

UC27 N/A 1 11/16 in N/A 3.3465 in N/A 1.9370 in N/A 0.8661 in N/A 0.7480 in N/A 1.1890 in N/A 7.110 lb N/A 4.460 lb
UC28 N/A 1 3/4 in N/A 3.3465 in N/A 1.9370 in N/A 0.8661 in N/A 0.7480 in N/A 1.1890 in N/A 7.110 lb N/A 4.460 lb
UC45MM N/A N/A 3.3465 in N/A 1.9370 in N/A 0.8661 in N/A 0.7480 in N/A 1.1890 in N/A 7.110 lb N/A 4.460 lb
UC30 N/A 1 7/8 in N/A 3.5433 in N/A 2.0315 in N/A 0.9449 in N/A 0.7480 in N/A 1.2835 in N/A 7.400 lb N/A 4.910 lb
UC31 N/A 1 15/16 in N/A 3.5433 in N/A 2.0315 in N/A 0.9449 in N/A 0.7480 in N/A 1.2835 in N/A 7.400 lb N/A 4.910 lb
UC50MM N/A N/A 3.5433 in N/A 2.0315 in N/A 0.9449 in N/A 0.7480 in N/A 1.2835 in N/A 7.400 lb N/A 4.910 lb
UC32S N/A 2 in N/A 3.5433 in N/A 2.0315 in N/A 0.9449 in N/A 0.7480 in N/A 1.2835 in N/A 7.400 lb N/A 4.910 lb
UC32 N/A 2 in N/A 3.937 in N/A 2.1890 in N/A 0.9843 in N/A 0.8740 in N/A 1.3150 in N/A 9.490 lb N/A 6.440 lb
UC34 N/A 2 1/8 in N/A 3.937 in N/A 2.1890 in N/A 0.9843 in N/A 0.8740 in N/A 1.3150 in N/A 9.490 lb N/A 6.440 lb
UC55MM N/A N/A 3.937 in N/A 2.1890 in N/A 0.9843 in N/A 0.8740 in N/A 1.3150 in N/A 9.490 lb N/A 6.440 lb
UC35 N/A 2 3/16 in N/A 3.937 in N/A 2.1890 in N/A 0.9843 in N/A 0.8740 in N/A 1.3150 in N/A 9.490 lb N/A 6.440 lb
UC36 N/A 2 1/4 in N/A 4.3307 in N/A 2.5630 in N/A 1.0630 in N/A 1 in N/A 1.5630 in N/A 11.500 lb N/A 7.940 lb
UC60MM N/A N/A 4.3307 in N/A 2.5630 in N/A 1.0630 in N/A 1 in N/A 1.5630 in N/A 11.500 lb N/A 7.940 lb
UC38 N/A 2.375 in N/A 4.3307 in N/A 2.5630 in N/A 1.0630 in N/A 1 in N/A 1.5630 in N/A 11.500 lb N/A 7.940 lb
UC39 N/A 2 7/16 in N/A 4.3307 in N/A 2.5630 in N/A 1.0630 in N/A 1 in N/A 1.5630 in N/A 11.500 lb N/A 7.940 lb
UC40 N/A 2 1/2 in N/A 4.7244 in N/A 2.5630 in N/A 1.1024 in N/A 1 in N/A 1.5630 in N/A 12.400 lb N/A 8.760 lb
UC65MM N/A N/A 4.7244 in N/A 2.5630 in N/A 1.1024 in N/A 1 in N/A 1.5630 in N/A 12.400 lb N/A 8.760 lb
UC43 N/A 2 11/16 in N/A 4.9210 in N/A 2.9370 in N/A 1.1811 in N/A 1.1890 in N/A 1.7480 in N/A 13.530 lb N/A 9.620 lb
UC44 N/A 2 3/4 in N/A 4.9210 in N/A 2.9370 in N/A 1.1811 in N/A 1.1890 in N/A 1.7480 in N/A 13.530 lb N/A 9.620 lb
UC70MM N/A N/A 4.9210 in N/A 2.9370 in N/A 1.1811 in N/A 1.1890 in N/A 1.7480 in N/A 13.530 lb N/A 9.620 lb
UC47 N/A 2 15/16 in N/A 5.1181 in N/A 3.0630 in N/A 1.2598 in N/A 1.3110 in N/A 1.7520 in N/A 14.620 lb N/A 10.540 lb
UC75MM N/A N/A 5.1181 in N/A 3.0630 in N/A 1.2598 in N/A 1.3110 in N/A 1.7520 in N/A 14.620 lb N/A 10.540 lb
UC48 N/A 3 in N/A 5.1181 in N/A 3.0630 in N/A 1.2598 in N/A 1.3110 in N/A 1.7520 in N/A 14.620 lb N/A 10.540 lb
UC80MM N/A N/A 5.5118 in N/A 3.2520 in N/A 1.2992 in N/A 1.3110 in N/A 1.9410 in N/A 16.000 lb N/A 11.700 lb
UC56 N/A 3 1/2 in N/A 6.2992 in N/A 3.7795 in N/A 1.4961 in N/A 1.5630 in N/A 2.2165 in N/A 21.120 lb N/A 15.700 lb
Unit of Measure
1 2 3