Bearing Inserts

UC300 Series Insert Bearings (UC3)

Name: Logass Trade Centre
Address: Room No. 36, 163 Narayan Dhuru Street, Maskati Building, 4th Floor, Mumbai, Maharashtra, 400003, IN
Telephone: +91 8369255108
Price range: ₹₹

The heavy 03-series insert bearing: a larger outside diameter and wider inner ring than UC2 for the same shaft, giving a higher load rating. Set-screw locking, spherical outer ring, for the 03-series housings (UCP3, UCF3, UCFL3, UCT3). Shaft sizes 25mm – 140mm; each size is listed with its dimensions and load ratings below.

Bore range: 25mm – 140mmLocking type: Set screwBrands: NTN, FAG, SKF, FYH, Asahi, DTC, SLS

Dimensions, Load Ratings & Part Numbers

Shaft Dia. (mm)	Bearing Number	D (Outside Dia.) (mm)	B (Inner Ring Width) (mm)	C (Outer Ring Width) (mm)	rs (min. Chamfer) (mm)	S (mm)	S1 (mm)	G (mm)	ds (Set Screw)	d4 (mm)	Ca (mm)	Cr (Dynamic Load) (N)	Cor (Static Load) (N)	f0 (Factor)	Mass (kg)
25	UC305	62	38	20	1.5	15	23	6	M6×0.75	36.8	5	21200	10900	12.6	0.35
30	UC306	72	43	23	1.5	17	26	6	M6×0.75	44.9	5.6	26700	15000	13.3	0.56
35	UC307	80	48	25	2	19	29	8	M8×1	49.4	5.7	33500	19100	13.1	0.7
40	UC308	90	52	27	2	19	33	10	M10×1.25	56	6.1	40500	24000	13.2	0.96
45	UC309	100	57	29	2	22	35	10	M10×1.25	63.5	7.1	53000	32000	13.1	1.28
50	UC310	110	61	32	2.5	22	39	12	M12×1.5	70.6	7.9	62000	38500	13.2	1.68
55	UC311	120	66	34	2.5	25	41	12	M12×1.5	76.6	8.5	71500	45000	13.2	2.08
60	UC312	130	71	36	2.5	26	45	12	M12×1.5	82.7	9	82000	52000	13.2	2.6
65	UC313	140	75	39	2.5	30	45	12	M12×1.5	88.2	9.4	92500	60000	13.2	3.25
70	UC314	150	78	41	2.5	33	45	12	M12×1.5	94.8	10	104000	68000	13.2	3.86
75	UC315	160	82	43	2.5	32	50	14	M14×1.5	101.3	10.5	113000	77000	13.2	4.7
80	UC316	170	86	45	2.5	34	52	14	M14×1.5	107.9	11.1	123000	86500	13.3	5.6
85	UC317	180	96	47	3	40	56	16	M16×1.5	114.4	11.5	133000	97000	13.3	6.7
90	UC318	190	96	49	3	40	56	16	M16×1.5	120.9	12.2	143000	107000	13.3	7.6
95	UC319	200	103	51	3	41	62	16	M16×1.5	127.5	12.7	153000	119000	13.3	8.7
100	UC320	215	108	55	3	42	66	18	M18×1.5	135.6	14	173000	141000	13.2	10.8
105	UC321	225	112	57	3	44	68	18	M18×1.5	142.1	14.6	184000	153000	13.2	12.2
110	UC322	240	117	59	3	46	71	18	M18×1.5	151.7	15.6	205000	179000	13.1	14.3
120	UC324	260	126	63	3	51	75	18	M18×1.5	165.2	15.5	207000	185000	13.5	18.5
130	UC326	280	135	67	4	54	81	20	M20×1.5	178.3	16.6	229000	214000	13.6	23
140	UC328	300	145	71	4	59	86	20	M20×1.5	190.4	17.8	253000	246000	13.6	28.5

Dimensions and load ratings per the NTN catalogue (metric and inch bores). The catalogue number adds suffixes to the base number shown here; confirm the exact version and brand with us before ordering. Cr and Cor are basic dynamic and static load ratings in newtons.

Inch Shaft Sizes

The UC3 insert bearing is also supplied with inch bores. The number carries a suffix for the shaft size (for example -104 is 1-1/4 inch). Outside dimensions and load ratings match the metric size in the table above; the set screw thread is the inch (UNF) size shown.

Shaft Dia. (in)	Bearing Number	D (Outside Dia.) (mm)	B (Inner Ring Width) (mm)	C (Outer Ring Width) (mm)	rs (min. Chamfer) (mm)	S (mm)	S1 (mm)	G (mm)	ds (Set Screw)	d4 (mm)	Ca (mm)	Cr (Dynamic Load) (N)	Cor (Static Load) (N)	f0 (Factor)	Mass (kg)
13/16 in (20.6 mm)	UC305-013	62	38	20	1.5	15	23	6	1/4-28UNF	36.8	5	21200	10900	12.6	0.35
7/8 in (22.2 mm)	UC305-014	62	38	20	1.5	15	23	6	1/4-28UNF	36.8	5	21200	10900	12.6	0.35
15/16 in (23.8 mm)	UC305-015	62	38	20	1.5	15	23	6	1/4-28UNF	36.8	5	21200	10900	12.6	0.35
1 in (25.4 mm)	UC305-100	62	38	20	1.5	15	23	6	1/4-28UNF	36.8	5	21200	10900	12.6	0.35
1-1/16 in (27 mm)	UC306-101	72	43	23	1.5	17	26	6	1/4-28UNF	44.9	5.6	26700	15000	13.3	0.56
1-1/8 in (28.6 mm)	UC306-102	72	43	23	1.5	17	26	6	1/4-28UNF	44.9	5.6	26700	15000	13.3	0.56
1-3/16 in (30.2 mm)	UC306-103	72	43	23	1.5	17	26	6	1/4-28UNF	44.9	5.6	26700	15000	13.3	0.56
1-1/4 in (31.8 mm)	UC307-104	80	48	25	2	19	29	8	5/16-24UNF	49.4	5.7	33500	19100	13.1	0.7
1-5/16 in (33.3 mm)	UC307-105	80	48	25	2	19	29	8	5/16-24UNF	49.4	5.7	33500	19100	13.1	0.7
1-3/8 in (34.9 mm)	UC307-106	80	48	25	2	19	29	8	5/16-24UNF	49.4	5.7	33500	19100	13.1	0.7
1-7/16 in (36.5 mm)	UC307-107	80	48	25	2	19	29	8	5/16-24UNF	49.4	5.7	33500	19100	13.1	0.7
1-1/2 in (38.1 mm)	UC308-108	90	52	27	2	19	33	10	3/8-24UNF	56	6.1	40500	24000	13.2	0.96
1-9/16 in (39.7 mm)	UC308-109	90	52	27	2	19	33	10	3/8-24UNF	56	6.1	40500	24000	13.2	0.96
1-5/8 in (41.3 mm)	UC309-110	100	57	29	2	22	35	10	3/8-24UNF	63.5	7.1	53000	32000	13.1	1.28
1-11/16 in (42.9 mm)	UC309-111	100	57	29	2	22	35	10	3/8-24UNF	63.5	7.1	53000	32000	13.1	1.28
1-3/4 in (44.5 mm)	UC309-112	100	57	29	2	22	35	10	3/8-24UNF	63.5	7.1	53000	32000	13.1	1.28
1-13/16 in (46 mm)	UC310-113	110	61	32	2.5	22	39	12	1/2-20UNF	70.6	7.9	62000	38500	13.2	1.68
1-7/8 in (47.6 mm)	UC310-114	110	61	32	2.5	22	39	12	1/2-20UNF	70.6	7.9	62000	38500	13.2	1.68
1-15/16 in (49.2 mm)	UC310-115	110	61	32	2.5	22	39	12	1/2-20UNF	70.6	7.9	62000	38500	13.2	1.68
2 in (50.8 mm)	UC311-200	120	66	34	2.5	25	41	12	1/2-20UNF	76.6	8.5	71500	45000	13.2	2.08
2-1/16 in (52.4 mm)	UC311-201	120	66	34	2.5	25	41	12	1/2-20UNF	76.6	8.5	71500	45000	13.2	2.08
2-1/8 in (54 mm)	UC311-202	120	66	34	2.5	25	41	12	1/2-20UNF	76.6	8.5	71500	45000	13.2	2.08
2-3/16 in (55.6 mm)	UC311-203	120	66	34	2.5	25	41	12	1/2-20UNF	76.6	8.5	71500	45000	13.2	2.08
2-1/4 in (57.2 mm)	UC312-204	130	71	36	2.5	26	45	12	1/2-20UNF	82.7	9	82000	52000	13.2	2.6
2-5/16 in (58.7 mm)	UC312-205	130	71	36	2.5	26	45	12	1/2-20UNF	82.7	9	82000	52000	13.2	2.6
2-3/8 in (60.3 mm)	UC312-206	130	71	36	2.5	26	45	12	1/2-20UNF	82.7	9	82000	52000	13.2	2.6
2-7/16 in (61.9 mm)	UC312-207	130	71	36	2.5	26	45	12	1/2-20UNF	82.7	9	82000	52000	13.2	2.6
2-1/2 in (63.5 mm)	UC313-208	140	75	39	2.5	30	45	12	1/2-20UNF	88.2	9.4	92500	60000	13.2	3.25
2-9/16 in (65.1 mm)	UC313-209	140	75	39	2.5	30	45	12	1/2-20UNF	88.2	9.4	92500	60000	13.2	3.25
2-5/8 in (66.7 mm)	UC314-210	150	78	41	2.5	33	45	12	1/2-20UNF	94.8	10	104000	68000	13.2	3.86
2-11/16 in (68.3 mm)	UC314-211	150	78	41	2.5	33	45	12	1/2-20UNF	94.8	10	104000	68000	13.2	3.86
2-3/4 in (69.9 mm)	UC314-212	150	78	41	2.5	33	45	12	1/2-20UNF	94.8	10	104000	68000	13.2	3.86
2-13/16 in (71.4 mm)	UC315-213	160	82	43	2.5	32	50	14	9/16-18UNF	101.3	10.5	113000	77000	13.2	4.7
2-7/8 in (73 mm)	UC315-214	160	82	43	2.5	32	50	14	9/16-18UNF	101.3	10.5	113000	77000	13.2	4.7
2-15/16 in (74.6 mm)	UC315-215	160	82	43	2.5	32	50	14	9/16-18UNF	101.3	10.5	113000	77000	13.2	4.7
3 in (76.2 mm)	UC315-300	160	82	43	2.5	32	50	14	9/16-18UNF	101.3	10.5	113000	77000	13.2	4.7
3-1/16 in (77.8 mm)	UC316-301	170	86	45	2.5	34	52	14	9/16-18UNF	107.9	11.1	123000	86500	13.3	5.6
3-1/8 in (79.4 mm)	UC316-302	170	86	45	2.5	34	52	14	9/16-18UNF	107.9	11.1	123000	86500	13.3	5.6
3-3/16 in (81 mm)	UC316-303	170	86	45	2.5	34	52	14	9/16-18UNF	107.9	11.1	123000	86500	13.3	5.6
3-1/4 in (82.6 mm)	UC317-304	180	96	47	3	40	56	16	5/8-18UNF	114.4	11.5	133000	97000	13.3	6.7
3-5/16 in (84.1 mm)	UC317-305	180	96	47	3	40	56	16	5/8-18UNF	114.4	11.5	133000	97000	13.3	6.7
3-7/16 in (87.3 mm)	UC317-307	180	96	47	3	40	56	16	5/8-18UNF	114.4	11.5	133000	97000	13.3	6.7
3-7/16 in (87.3 mm)	UC318-307	190	96	49	3	40	56	16	5/8-18UNF	120.9	12.2	143000	107000	13.3	7.6
3-1/2 in (88.9 mm)	UC318-308	190	96	49	3	40	56	16	5/8-18UNF	120.9	12.2	143000	107000	13.3	7.6
3-5/8 in (92.1 mm)	UC319-310	200	103	51	3	41	62	16	5/8-18UNF	127.5	12.7	153000	119000	13.3	8.7
3-11/16 in (93.7 mm)	UC319-311	200	103	51	3	41	62	16	5/8-18UNF	127.5	12.7	153000	119000	13.3	8.7
3-3/4 in (95.3 mm)	UC319-312	200	103	51	3	41	62	16	5/8-18UNF	127.5	12.7	153000	119000	13.3	8.7
3-13/16 in (96.8 mm)	UC320-313	215	108	55	3	42	66	18	5/8-18UNF	135.6	14	173000	141000	13.2	10.8
3-7/8 in (98.4 mm)	UC320-314	215	108	55	3	42	66	18	5/8-18UNF	135.6	14	173000	141000	13.2	10.8
3-15/16 in (100 mm)	UC320-315	215	108	55	3	42	66	18	5/8-18UNF	135.6	14	173000	141000	13.2	10.8
4 in (101.6 mm)	UC320-400	215	108	55	3	42	66	18	5/8-18UNF	135.6	14	173000	141000	13.2	10.8

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Typical Applications

Replacement inserts for worn mounted units
Conveyors, fans and blowers
Agricultural and food-processing machinery
OEM machinery with custom housings

Other Bearing Inserts Series

UC2 UCX AS2 UEL2 UEL3 AEL2

Frequently Asked Questions

What sizes are available in the UC3 series?

UC3 units are available from 25mm – 140mm bore, as listed in the dimension table below. Each size has its own part number for ordering.

How is the UC3 insert bearing locked to the shaft?

UC3 insert bearings use set screw locking and have a spherical outer ring, so they seat in a matching housing and self-align. Available from NTN, FAG, SKF, FYH, Asahi, DTC and SLS.

What is UC3 typically used for?

Common applications include replacement inserts for worn mounted units and conveyors, fans and blowers, and similar general industrial shaft-support duties.

Can’t find your size?

We supply sizes, brands and special versions of mounted bearing units that are not listed on this page. Type the exact size or designation you need and send it to us for a quote.

Need pricing on UC3 units?

Share your shaft size and quantity — our technical team will confirm availability and pricing within one business day.

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