UC Set Screw Locking Insert Bearing Series

SYSTEM DESCRIPTION:

Product Overview

UC Set Screw Locking Insert Bearing is a widely used mounted bearing unit designed for reliable shaft positioning and stable operation in various industrial applications. The bearing features a set screw locking mechanism on the inner ring, allowing it to be securely fixed onto the shaft without additional adapters. With a compact structure, easy installation, and dependable performance, UC insert bearings are commonly used in agricultural machinery, conveyor systems, textile equipment, and other mechanical transmission systems.

Set Screw Locking Design

The UC bearing adopts a double set screw locking system that firmly locks the inner ring to the shaft. This design ensures strong clamping force and prevents shaft slippage during operation. It is particularly suitable for applications with moderate load and normal rotational speeds, providing stable positioning and reducing the risk of misalignment.

High-Quality Bearing Material

The bearing rings and rolling elements are typically manufactured from high-grade chrome steel (GCr15), known for its excellent hardness, wear resistance, and fatigue strength. This material composition ensures long service life and reliable operation even under demanding working conditions.

Wide Range of Sizes

UC series insert bearings are available in multiple shaft diameter sizes, typically ranging from 12 mm to 90 mm, allowing them to match different shaft requirements. Standardized dimensions make them compatible with a variety of pillow block housings and bearing units, enabling flexible installation across many mechanical systems.

Reliable Load Capacity

UC insert bearings provide stable dynamic and static load capacity, ensuring reliable operation under continuous mechanical stress. The optimized internal structure helps distribute loads evenly across rolling elements, minimizing vibration and extending bearing life.

Easy Installation and Maintenance

One of the main advantages of UC bearings is their simple installation process. The set screw locking system allows quick mounting directly onto the shaft using standard tools. In addition, the bearing is typically pre-lubricated and can be relubricated through a grease nipple when required, making maintenance straightforward and cost-effective.

TECHNICAL DRAWING:

Bearing No.		Shaft Dia.		Dimension				mm				Dynamic load	Statie load	Weight (kg)
		d						in.				ratings	ratings （KN）
		(in.)	(mm)	D	B	C	S	S1	G	h	ds	Cr （KN）	Cor （KN）
UC	201		12	47 1.8504	31 1.2205	16 0.6299	12.7 0.5000	18.3 0.7205	4.7 0.1850	4.4 0.1732	M6×1 1/4-28UNF	9.88	6.65	0.19
	201-8	1/2												0.19
	202		15											0.19
	202-9	9/16												0.19
	202-10	5/8												0.19
	203		17											0.19
	203-11	11/16												0.19
	204		20											0.17
	204-12	3/4												0.18
UC	205		25	52 2.0472	34.1 1.3425	17 0.6693	14.3 0.5630	19.8 0.7795	5.5 0.2165	4.3 0.1693	M6×1 1/4-28UNF	10.78	9.93	0.19
	205-14	7/8												0.22
	205-15	15/16												0.20
	205-16	1												0.19
UC	206		30	62 2.4409	38.1 1.5000	19 0.7480	15.9 0.6260	22.2 0.8740	5.5 0.2165	5 0.1969	M6×1 1/4-28UNF	14.97	11.31	0.31
	206-17	1-11/16												0.34
	206-18	1-1/8												0.34
	206-19	1-3/16												0.32
	206-20	1-1/4												0.30
UC	207		35	72 2.8346	42.9 1.6890	20 0.7874	17.5 0.6890	25.4 1.0000	6.5 0.2559	5.8 0.2283	M8×1 5/16-24UNF	19.75	15.30	0.46
	207-20	1-1/4												0.52
	207-21	15/16												0.50
	207-22	1-3/8												0.48
	207-23	1-7/16												0.45
UC	208		40	80 3.1496	49.2 1.9370	21 0.8268	19 0.7480	30.2 1.1890	8 0.3150	6.3 0.2480	M8×1 5/16-24UNF	25.09	19.84	0.63
	208-24	1-1/2												0.68
	208-25	1-9/16												0.64
UC	209		45	85 3.3465	49.2 1.9370	22 0.8661	19 0.7480	30.2 1.1890	8 0.3150	6.8 0.2677	M8×1 5/16-24UNF	25.14	20.46	0.68
	209-26	1-5/8												0.78
	209-27	1-11/16												0.74
	209-28	1-3/4												0.70
UC	210		50	90 3.5433	51.6 2.0315	24 0.9449	19 0.7480	32.6 1.2835	9 0.3543	6.5 0.2559	M10×1.25 3/8-24UNF	26.98	23.18	0.78
	210-30	1-7/8												0.85
	210-31	1-15/16												0.80
UC	211		55	100 3.9370	55.6 2.1890	25 0.9843	22.2 0.8740	33.4 1.3150	9 0.3543	7.2 0.2835	M10×1.25 3/8-24UNF	33.37	29.22	1.07
	211-32	2												1.22
	211-34	2-1/8												1.10
	211-35	2-3/16												1.05
UC	212		60	110 4.3307	65.1 2.5630	27 1.0630	25.4 1.0000	39.7 1.5630	10.5 0.4134	8.2 0.3228	M10×1.25 3/8-24UNF	36.74	32.93	1.51
	212-36	2-1/4												1.65
	212-38	2-3/8												1.53
	212-39	2-7/16												1.45
UC	213		65	120 4.7244	65.1 2.5630	29 1.1417	25.4 1.0000	39.7 1.5630	12 0.4724	8 0.3150	M10×1.25 3/8-24UNF	44.01	40	1.86
	213-39	2-7/16												1.96
	213-40	2-1/2												1.94
UC	214		70	125 4.9213	74.6 2.9370	30 1.1811	30.2 1.1890	44.4 1.7480	12 0.4724	9 0.3543	M12×1.25 7/16-20UNF	46.8	45	2.05
	214-43	2-11/16												2.04
	214-44	2-3/4												2.06
UC	215		75	130 5.1181	77.8 3.0630	30 1.1811	33.3 1.3110	44.5 1.7520	12 0.4720	9 0.3543	M12×1.25 7/16-20UNF	50.8	49.5	2.21
	215-47	2-15/16												2.3
	215-48	3												2.13
UC	216		80	140 5.5118	82.6 3.2520	33 1.2992	33.3 1.3110	49.3 1.9410	14 0.5512	10.3 0.4055	M12×1.25 7/16-20UNF	55.04	53.31	2.79
UC	217		85	150 5.9055	85.7 3.3740	35 1.3780	34.1 1.3425	51.6 2.0315	14 0.5512	11 0.4331	M12×1.25 7/16-20UNF	63.98	63.89	3.38
	217-52	3-1/4												3.59
UC	218		90	160 6.2992	96 3.7795	37 1.4567	39.7 1.5630	56.3 2.2165	14 0.5512	12 0.4724	M12×1.25 1/2-20UNF	73.83	70.76	4.46
	218-56	3-1/2												4.56

Tolerance Class

Standard	Tolerance class
GB/T307.1	PO	P6	P5	P4
IS0492	C LASSO	CLASS6	CLASS5	CLASS4
AFBMA STD.20	ABEC1	ABEC3	ABEC5	ABEC7

Bearing Material

Chrome Steel: Chemical Composition of Chrome Steel

Steel No	Chemical Composition%
Steel No	C	Si	Mn	P	S	Cr
Gcr15	0.95-1.05	0.15-0.35	0.20-0.40	≤0.027	≤0.02	1.30-1.65

The Interchange of Chrome Steel No.

Country	China	ISO	U.S.A	Germany	Japan	Sweden
Bearings Steel No.	Gcr15	638/XVII 1	(AISI)52100	(DIN)100Cr6	(Jis)SVJ2	SKF3

Packing

Tube packing, single box packing or other industrial packing are all available.Special requirements should be mentioned in the order

Our own NSJ package is as below

Company Profile

Ningbo Sanya Bearing Co., Ltd. is a professional China UC Set Screw Locking Insert Bearing Series Manufacturers and UC Set Screw Locking Insert Bearing Series Factory.We established in 1994 stands right at the prime location of the Yangtze River Delta. Specialized in the production of high-quality deep groove ball bearings and insert bearings. It has emerged as a modern company integrating product development, design, manufacturing, sales and service. It can produce bearings with an inner diameter of 3mm to 100mm and customize various non-standard Custom Series 6000 Two Contact Seals Deep Groove Ball Bearing with highly-automated equipment, stable quality, and complete testing methods ensuring the quality of its products. With the vigorous development of the foreign trade department, our business in bearing production and sales in 2018 far exceeded 20 million US dollars, and the products were sold in more than 50 countries and regions.

The company has established a modernized enterprise management system, pooling talents in various fields to make the company more humane, informatized and international with the ISO9001 quality management system being introduced to the production process to enhance its competitiveness. In 2017, the ISO/TS16949 quality management system was also introduced to seek further development in richer application field.

Taking "integrity; service; cooperation; win-win " as the core values, and "customer, order primacy" as its working philosophy, adhering to the vision of becoming China's bearing supplier, while satisfying the customers and helping employees achieve their dreams, it is constantly heading towards the goal of "get the world move with Chinese Bearings ".