Custom UC300 Series Stainless Steel Insert Ball Bearings Manufacturers, Factory

UC300 Series

UC300 series insert bearings are a high-performance bearing solution widely used in a variety of industrial equipment and machinery. This series is designed for easy installation and is typically used to support rotating parts of shafts. The insert bearings of the UC300 series have excellent wear resistance and load-bearing capacity, and are suitable for high load and high-speed operation applications. Its outer shell is made of cast iron or plastic material and is equipped with high-quality steel balls inside to ensure smooth operation and long service life. In addition, the UC300 series also has good sealing performance, which can effectively prevent dust and contaminants from entering the inside of the bearing, further improving its working reliability. Whether in agricultural machinery, conveying equipment or power tools, UC300 series insert bearings can provide excellent performance and economical maintenance solutions and are widely favored by users.

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UC300 Stainless Steel Insert Bearings - Corrosion-Resistant Ball Bearing Units

Discover the UC300 series stainless steel insert ball bearings, engineered for superior performance in harsh environments. These corrosion-resistant bearing units combine durability with smooth operation, making them ideal for food processing, marine applications, and chemical industries.

Premium Stainless Steel Bearing Solution

Our UC300 series features 304 stainless steel construction throughout the bearing assembly, including the inner ring, outer ring, and balls. This complete stainless design provides:

Excellent resistance to rust and corrosion
Reliable performance in wet or washdown environments
Compatibility with cleaning chemicals and disinfectants
Long service life even in demanding conditions

Key Features and Benefits

Feature	Benefit
Full 304 stainless steel construction	Maximum corrosion resistance
Pre-lubricated with food-grade grease	Maintenance-free operation
Eccentric locking collar design	Secure shaft mounting
ABEC1 precision rating	Smooth, consistent performance
Standard sealing options	Protection from contaminants

The UC300 series stainless steel insert bearings are perfect for:

Food processing equipment - Conveyors, mixers, packaging machines
Marine applications - Boat trailers, dock equipment, fishing gear
Chemical processing - Pumps, valves, agitators
Pharmaceutical equipment - Where cleanability is essential
Washdown environments - High-pressure cleaning areas

Why Choose Our Stainless Steel Insert Bearings?

Compared to standard carbon steel bearings, our UC300 series offers:

3-5 times longer lifespan in corrosive environments
Reduced maintenance and replacement costs
Compliance with food safety regulations (FDA compliant materials)
Available with optional stainless steel housings for complete corrosion resistance
Interchangeable with common insert bearing dimensions

Installation and Maintenance Tips

For optimal performance of your stainless steel insert ball bearings:

Ensure proper shaft tolerances (h6 recommended)
Use appropriate installation tools to avoid bearing damage
Inspect seals regularly in high-pressure wash environments
Relubrication typically not required with standard food-grade grease
Store in dry conditions when not in use

Bearing No.	d		Dimensions（mm）
Bearing No.	(mm)	(in.)	D	Bi	Be	n	m	G	ds
UC305-14	22.225	0.875	62	38	22	15	23	6	1/4-28UNF
UC305-15	23.813	15/16	62	38	22	15	23	6	1/4-28UNF
UC305	25		62	38	22	15	23	6	M6x1
UC305-16	25.4	1	62	38	22	15	23	6	1/4-28UNF
UC306-18	28.575	1.125	72	43	24	17	26	6	1/4-28UNF
UC306	30		72	43	24	17	26	6	M6x1
UC306-19	30.163	1.1875	72	43	24	17	26	6	1/4-28UNF
UC307-20	31.75	1.25	80	48	26	19	29	8	5/16-24UNF
UC307-21	33.338	1.3125	80	48	26	19	29	8	5/16-24UNF
UC307-22	34.925	1.375	80	48	26	19	29	8	5/16-24UNF
UC307	35		80	48	26	19	29	8	M8x1.0
UC307-23	36.513	1.4375	80	48	26	19	29	8	5/16-24UNF
UC308-24	38.1	1.5	90	52	28	19	33	10	3/8-24UNF
UC308-25	39.688	1.5625	90	52	28	19	33	10	3/8-24UNF
UC308	40		90	52	28	19	33	10	M10x1.25
UC309-26	41.275	1.625	100	57	30	22	35	10	3/8-24UNF
UC309-27	42.863	1.6875	100	57	30	22	35	10	3/8-24UNF
UC309-28	44.45	1.75	100	57	30	22	35	10	3/8-24UNF
UC309	45		100	57	30	22	35	10	M10x1.25
UC310-30	47.625	1.875	110	61	32	22	39	12	1/2-20UNF
UC310-31	49.213	1.9375	110	61	32	22	39	12	1/2-20UNF
UC310	50		110	61	32	22	39	12	M12x1.5
UC311-32	50.8	2	120	66	34	25	41	12	1/2-20UNF
UC311-34	53.975	2.125	120	66	34	25	41	12	1/2-20UNF
UC311	55		120	66	34	25	41	12	M12x1.5
UC311-35	55.563	2.1875	120	66	34	25	41	12	1/2-20UNF
UC312-36	57.15	2.25	130	71	36	26	45	12	1/2-20UNF
UC312	60		130	71	36	26	45	12	M12x1.5
UC312-38	60.325	2.375	130	71	36	26	45	12	1/2-20UNF
UC312-39	61.913	2.4375	130	71	36	26	45	12	1/2-20UNF
UC313-40	63.5	2.5	140	75	38	30	45	12	1/2-20UNF
UC313	65		140	75	38	30	45	12	M12x1.5
UC314-44	69.85	2.75	150	78	40	33	45	12	1/2-20UNF
UC314	70		150	78	40	33	45	12	M12x1.5
UC315	75		160	82	42	32	50	14	M14x1.5
UC315-48	76.2	3	160	82	42	32	50	14	9/16-18UNF
UC316-50	79.375	3.125	170	86	44	34	52	14	9/16-18UNF
UC316	80		170	86	44	34	52	14	M14x1.5
UC317-52	82.55	3.25	180	96	46	40	56	16	5/8-18UNF
UC317	85		180	96	46	40	56	16	M16x1.5
UC318-56	88.9	3.5	190	96	48	40	56	16	5/8-18UNF
UC318	90		190	96	48	40	56	16	M16x1.5
UC319	95		200	103	50	41	62	16	M16x1.5
UC320	100		215	108	54	42	66	18	M18x1.5
UC320-64	101.6	4	215	108	54	42	66	18	5/8-18UNF
UC322	110		240	117	60	46	71	20	M18x1.5
UC324	120		260	126	64	51	75	20	M18x1.5
UC326	130		280	135	68	54	81	20	M20x1.5
UC328	140		300	145	72	59	86	20	M20x1.5