QJ300 Series Double Row Angular Contact Ball Bearings

QJ300 Series

The QJ300 series double row angular contact ball bearing is a high-performance bearing designed to withstand simultaneous radial and axial loads. This kind of bearing adopts a double-row ball design, which can provide higher load-bearing capacity and rigidity, and is suitable for high-speed and heavy-load applications. The features of the QJ300 series include high-quality steel, precise processing technology and excellent lubrication performance, giving it a long service life and reliability during use. This series of bearings are widely used in machinery manufacturing, automobiles, aerospace and other industrial fields, and are particularly suitable for occasions requiring high precision and stability.

Send inquiry

Product parameters

Designation	Principal dimensions(mm)				Basic load ratings(KN)		Basic load ratings(kgf)		Limiting Speed (rpm)		Distance of action point	Installation dimensions(mm)			Weight
Designation	d	D	B	r(min)	Cr	Cor	Cr	Cor	Grease	Oil	a0(mm)	da(min)	Da(max)	ra(max)	(kg)
QJ306	30	72	19	1.1	46000	63000	4700	6450	8000	11000	35.7	37	65	1	0.42
QJ307	35	80	21	1.5	55000	80000	5600	8150	7100	9500	40.3	44	71	1.5	0.57
QJ308	40	90	23	1.5	67000	100000	6850	10200	6300	8500	45.5	49	81	1.5	0.78
QJ309	45	100	25	1.5	87500	133000	8900	13500	5600	7500	50.8	54	91	1.5	1.05
QJ310	50	110	27	2	102000	159000	10400	16200	5000	6700	56	60	100	2	1.35
QJ311	55	120	29	2	118000	187000	12000	19100	4500	6300	61.3	65	110	2	1.75
QJ312	60	130	31	2.1	135000	217000	13800	22200	4300	5600	66.5	72	118	2	2.15
QJ313	65	140	33	2.1	153000	250000	15600	25500	3800	5300	71.8	77	128	2	2.7
QJ314	70	150	35	2.1	172000	285000	17500	29100	3600	5000	77	82	138	2	3.18
QJ315	75	160	37	2.1	187000	320000	19100	33000	3400	4800	82.3	87	148	2	3.9
QJ316	80	170	39	2.1	202000	360000	20600	37000	3200	4300	87.5	92	158	2	4.6
QJ317	85	180	41	3	218000	405000	22300	41000	3000	4000	92.8	99	166	2.5	5.34
QJ318	90	190	43	3	235000	450000	23900	45500	2800	3800	98	104	176	2.5	6.4
QJ319	95	200	45	3	251000	495000	25600	50500	2600	3600	103.3	109	186	2.5	7.4

about Yinin

Shanghai Yinin Bearing and Transmission Company was founded in 2009 and has over 20 years of experience in the bearing field. We are China QJ300 Series Double Row Angular Contact Ball Bearings manufacturers and offer custom QJ300 Series Double Row Angular Contact Ball Bearings factory. Since 1999, starting from representing bearing manufacturers in China, we have exported different kinds of bearings. Nowadays we are developing one completed sales and manufacturing bearings group.

Company Profile

Get In Touch

Industry Applications

Agriculture

Bearings also play a very important role in agricultural machinery. They are used to support rotatin...

Automotive

Bearings are widely used in automobiles. They are the key supporting and rotating parts of many movi...

Medical Devices

Used for support, height, angle, joint, and rotating parts of medical equipment.

Home Appliances

Used for support, rotation, motor and compressor parts of household appliances.

Automation

Used for rotation and movement of support and guide parts of automation equipment

Construction

In building structures, bearings can be used to connect different structural components.

Food & Beverage

In the production process of food and beverages, pumps are needed to transport liquids and compresso...

Aerospace

Bearings are used in aircraft and spacecraft engines to support rotating components such as turbines...

WHAT’S NEWS

2025-06-12

Angular Contact Ball Bearings: Key Comparisons & Select...

Angular contact ball bearings are essential for high-precision applications, offering superior axial and radial load capacity. This article explores key comparisons, including Angular Contact Ball Bea...

2025-06-05

Deep Groove Ball Bearing: Dimensions, Specifications, a...

Deep groove ball bearings are among the most widely used bearing types due to their versatility, high-speed capability, and ability to handle both radial and axial loads. This article explores key asp...

2025-06-01

Spherical Plain Bearing: Versatile Solutions for Heavy-...

Sub-Topics: Ball Head Joint Rod End Bearing & Automatic Transmission Linear Ball Bearing Spherical plain bearings are critical components in machinery requiring high load capacity, misalignment co...

Tel: +86-13916786238

Fax: +86-21-68551629

Email: [email protected]

Add: HuangXu Industrial Area, DanTu, ZhenJiang city, JiangSu Province, China

Industries

Agriculture

Automotive

Medical Devices

Home Appliances

Automation

Construction

Food & Beverage

Aerospace

Transportation

Mining

New Energy

Resources

Download

Agent

FAQ

Company

Company Profile

Manufacturing

Social

QJ300 Series

Submit feedback