UCFB 200 Series Pillow Block Bearing

UCFB bearing units designed for precision and durability in industrial applications. Features a compact housing design ideal for limited mounting spaces.

Material Specifications

Housing Options: Grey cast iron, Cast steel, Ductile iron.

Rolling Bearing: High-quality bearing steel.

* Contact us for specific material requirements.

Packaging Details

Commercial packing: 1pc/plastic bag + color box + carton + wood pallets
Customized packing available as per customer requirements

Technical Specifications

Comprehensive dimensional data for UCFB Series Bearing Units

Unit No.	d (mm/in)	W (mm/in)	b (mm/in)	k (mm/in)	a (mm/in)	I (mm/in)	S (mm/in)	g (mm/in)	h (mm/in)	J (mm/in)	e (mm/in)	i (mm/in)	Z (mm/in)	B (mm/in)	n (mm/in)	Bolt Size (mm/in)	Bearing No.	Housing No.	Weight (kg)
UCFB201	12	110	62	52	52	25.5	10	13	42	27	32	15	33.3	31	12.7	M8	UC201	FB201	0.587
UCFB201-8	1/2	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC201-8	FB201	0.577
UCFB202	15	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC202	FB202	0.577
UCFB202-9	9/16	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC202-9	FB202	0.577
UCFB202-10	5/8	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC202-10	FB202	0.577
UCFB203	17	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC203	FB203	0.567
UCFB203-11	11/16	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC203-11	FB203	0.557
UCFB204	20	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC204	FB204	0.546
UCFB204-12	3/4	4-11/32	2-7/16	2-1/16	2-1/16	1	25/64	1/2	1-21/32	1-1/16	1-17/64	19/32	1-5/16	1.2205	0.500	5/16	UC204-12	FB204	0.546
UCFB205	25	116	68	52	56	27	10	13	45	27	34	16	35.8	34.1	14.3	M8	UC205	FB205	0.637
UCFB205-13	13/16	4-9/16	2-11/16	2-1/16	2-7/32	1-1/16	25/64	1/2	1-49/64	1-1/16	1-11/32	5/8	1-13/32	1.3425	0.563	5/16	UC205-13	FB205	0.674
UCFB205-14	7/8	4-9/16	2-11/16	2-1/16	2-7/32	1-1/16	25/64	1/2	1-49/64	1-1/16	1-11/32	5/8	1-13/32	1.3425	0.563	5/16	UC205-14	FB205	0.664
UCFB205-15	15/16	4-9/16	2-11/16	2-1/16	2-7/32	1-1/16	25/64	1/2	1-49/64	1-1/16	1-11/32	5/8	1-13/32	1.3425	0.563	5/16	UC205-15	FB205	0.644
UCFB205-16	1	4-9/16	2-11/16	2-1/16	2-7/32	1-1/16	25/64	1/2	1-49/64	1-1/16	1-11/32	5/8	1-13/32	1.3425	0.563	5/16	UC205-16	FB205	0.634
UCFB206	30	130	78	55	65	31	10	13	50	29	40	18	40.2	38.1	15.9	M8	UC206	FB206	0.879
UCFB206-17	1-1/16	5-1/8	3-1/16	2-5/32	2-9/16	1-7/32	25/64	1/2	1-31/32	1-9/64	1-37/64	45/64	1-19/32	1.5000	0.626	5/16	UC206-17	FB206	0.889
UCFB206-18	1-1/8	5-1/8	3-1/16	2-5/32	2-9/16	1-7/32	25/64	1/2	1-31/32	1-9/64	1-37/64	45/64	1-19/32	1.5000	0.626	5/16	UC206-18	FB206	0.899
UCFB206-19	1-3/16	5-1/8	3-1/16	2-5/32	2-9/16	1-7/32	25/64	1/2	1-31/32	1-9/64	1-37/64	45/64	1-19/32	1.5000	0.626	5/16	UC206-19	FB206	0.879
UCFB206-20	1-1/4	5-1/8	3-1/16	2-5/32	2-9/16	1-7/32	25/64	1/2	1-31/32	1-9/64	1-37/64	45/64	1-19/32	1.5000	0.626	5/16	UC206-20	FB206	0.869
UCFB207	35	144	90	62	70	34	10	15	55	32	46	19	44.4	42.9	17.5	M8	UC207	FB207	1.241
UCFB207-20	1-1/4	5-21/32	3-35/64	2-7/16	2-3/4	1-11/32	25/64	19/32	2-11/64	1-17/64	1-13/16	3/4	1-3/4	1.6890	0.689	5/16	UC207-20	FB207	1.306
UCFB207-21	1-5/16	5-21/32	3-35/64	2-7/16	2-3/4	1-11/32	25/64	19/32	2-11/64	1-17/64	1-13/16	3/4	1-3/4	1.6890	0.689	5/16	UC207-21	FB207	1.276
UCFB207-22	1-3/8	5-21/32	3-35/64	2-7/16	2-3/4	1-11/32	25/64	19/32	2-11/64	1-17/64	1-13/16	3/4	1-3/4	1.6890	0.689	5/16	UC207-22	FB207	1.246
UCFB207-23	1-7/16	5-21/32	3-35/64	2-7/16	2-3/4	1-11/32	25/64	19/32	2-11/64	1-17/64	1-13/16	3/4	1-3/4	1.6890	0.689	5/16	UC207-23	FB207	1.216
UCFB208	40	164	100	72	78	36	12	16	60	41	50	21	51.2	49.2	19	M10	UC208	FB208	1.661
UCFB208-24	1-1/2	6-15/32	3-15/16	2-27/32	3-1/16	1-13/32	15/32	5/8	2-23/64	1-39/64	1-31/32	53/64	1-1/64	1.9370	0.748	3/8	UC208-24	FB208	1.701
UCFB208-25	1-9/16	6-15/32	3-15/16	2-27/32	3-1/16	1-13/32	15/32	5/8	2-23/64	1-39/64	1-31/32	53/64	1-1/64	1.9370	0.748	3/8	UC208-25	FB208	1.671
UCFB209	45	174	106	76	80	38	12	18	65	43	54	22	52.2	49.2	19	M10	UC209	FB209	1.924
UCFB209-26	1-5/8	6-27/32	4-3/16	3	3-5/32	1-1/2	15/32	23/32	2-9/16	1-11/16	2-1/8	55/64	2-1/16	1.9370	0.748	3/8	UC209-26	FB209	2.024
UCFB209-27	1-11/16	6-27/32	4-3/16	3	3-5/32	1-1/2	15/32	23/32	2-9/16	1-11/16	2-1/8	55/64	2-1/16	1.9370	0.748	3/8	UC209-27	FB209	1.984
UCFB209-28	1-3/4	6-27/32	4-3/16	3	3-5/32	1-1/2	15/32	23/32	2-9/16	1-11/16	2-1/8	55/64	2-1/16	1.9370	0.748	3/8	UC209-28	FB209	1.944
UCFB210	50	184	112	82	86	40	12	18	68	46	58	22	54.6	51.6	19	M10	UC210	FB210	2.212
UCFB210-29	1-13/16	7-1/4	4-13/32	3-7/32	3-3/8	1-37/64	15/32	23/32	2-43/64	1-13/16	2-9/32	55/64	2-5/32	2.0315	0.748	3/8	UC210-29	FB210	2.332
UCFB210-30	1-7/8	7-1/4	4-13/32	3-7/32	3-3/8	1-37/64	15/32	23/32	2-43/64	1-13/16	2-9/32	55/64	2-5/32	2.0315	0.748	3/8	UC210-30	FB210	2.282
UCFB210-31	1-15/16	7-1/4	4-13/32	3-7/32	3-3/8	1-37/64	15/32	23/32	2-43/64	1-13/16	2-9/32	55/64	2-5/32	2.0315	0.748	3/8	UC210-31	FB210	2.232
UCFB210-32	2	7-1/4	4-13/32	3-7/32	3-3/8	1-37/64	15/32	23/32	2-43/64	1-13/16	2-9/32	55/64	2-5/32	2.0315	0.748	3/8	UC210-32	FB210	2.192
UCFB211	55	207	130	86	90	43	14	18	78	50	62	25	58.4	55.6	22.2	M12	UC211	FB211	3.095
UCFB211-32	2	8-5/32	5-1/8	3-25/64	3-35/64	1-11/16	35/64	45/64	3-5/64	1-31/32	2-7/16	63/64	2-5/16	2.1890	0.874	7/16	UC211-32	FB211	3.245
UCFB211-33	2-1/16	8-5/32	5-1/8	3-25/64	3-35/64	1-11/16	35/64	45/64	3-5/64	1-31/32	2-7/16	63/64	2-5/16	2.1890	0.874	7/16	UC211-33	FB211	3.185
UCFB211-34	2-1/8	8-5/32	5-1/8	3-25/64	3-35/64	1-11/16	35/64	45/64	3-5/64	1-31/32	2-7/16	63/64	2-5/16	2.1890	0.874	7/16	UC211-34	FB211	3.145
UCFB211-35	2-3/16	8-5/32	5-1/8	3-25/64	3-35/64	1-11/16	35/64	45/64	3-5/64	1-31/32	2-7/16	63/64	2-5/16	2.1890	0.874	7/16	UC211-35	FB211	3.075
UCFB212	60	223	140	90	94	48	14	18	84	55	66	29	68.7	65.1	25.4	M12	UC212	FB212	3.869
UCFB212-36	2-1/4	8-25/32	5-1/2	3-35/64	3-45/64	1-7/8	35/64	45/64	3-5/16	2-11/64	2-19/32	1-9/64	2-23/32	2.5630	1.000	7/16	UC212-36	FB212	3.999
UCFB212-37	2-5/16	8-25/32	5-1/2	3-35/64	3-45/64	1-7/8	35/64	45/64	3-5/16	2-11/64	2-19/32	1-9/64	2-23/32	2.5630	1.000	7/16	UC212-37	FB212	3.919
UCFB212-38	2-3/8	8-25/32	5-1/2	3-35/64	3-45/64	1-7/8	35/64	45/64	3-5/16	2-11/64	2-19/32	1-9/64	2-23/32	2.5630	1.000	7/16	UC212-38	FB212	3.849
UCFB212-39	2-7/16	8-25/32	5-1/2	3-35/64	3-45/64	1-7/8	35/64	45/64	3-5/16	2-11/64	2-19/32	1-9/64	2-23/32	2.5630	1.000	7/16	UC212-39	FB212	3.779
UCFB213	65	244	155	94	100	50	14	20	92	60	70	30	69.7	65.1	25.4	M12	UC213	FB213	4.968
UCFB213-40	2-1/2	9-39/64	6-7/64	3-45/64	3-15/16	1-31/32	35/64	25/32	3-5/8	2-23/64	2-3/4	1-3/16	2-3/4	2.5630	1.000	7/16	UC213-40	FB213	5.058
UCFB213-41	2-9/16	9-39/64	6-7/64	3-45/64	3-15/16	1-31/32	35/64	25/32	3-5/8	2-23/64	2-3/4	1-3/16	2-3/4	2.5630	1.000	7/16	UC213-41	FB213	4.968

Key Features & Applications

The fit between the bearing and the bearing housing: The outer ring of the bearing is spherical in shape and fits with the bearing housing with a spherical inner hole. This spherical fit design is its core structural feature, which endows the bearing with an automatic self-aligning function.

Bearing housing form: The bearing housing is of a suspended structure with three installation holes, all located on one side of the shaft center. It is suitable for occasions where the installation space is limited and other ordinary bearing units cannot be used.

Good self-aligning performance: It can automatically correct the axis deviation caused by installation errors or shaft bending, adjust the axis deviation caused by shaft deflection, eccentricity, etc., prevent the bearing from bearing abnormal loads, ensure the stable operation of the equipment, and effectively compensate for errors such as non-coincidence of the axis and deformation of the installation bottom surface during installation.

Easy installation: No additional bearing box design is required. It can be directly installed at the designated position of the main unit through bolts. It is convenient to use and can be installed quickly, saving installation time and cost.

Strong load-bearing capacity: The outer spherical structure increases the contact area. Compared with ordinary bearings, it can withstand greater radial loads and certain axial loads, making it suitable for various working scenarios with high load-bearing capacity requirements.

Convenient maintenance: Some models are equipped with oil injection holes, which facilitate the replenishment of grease, effectively extending the service life of the bearings and reducing the risk of failure caused by poor lubrication.