OEM/ODM F684 ZZ Miniature Deep Groove Ball Bearing, Zinc-Plated Anti-Corrosion, 4*9*4mm, High-Speed Low-Noise

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About Us

Ningbo Zhouxin International Trade Co., Ltd. was established in 2025, headquartered in Ningbo, an open coastal city in eastern China, focusing on technology development and global sales in the field of bearings and hardware accessories. The company relies on the strong manufacturing foundation of its parent company ------ 12,000 ㎡ modern production plant, 70+ automated production lines, 100+ professional technical team, 10+ years of precision manufacturing experience, and ISO/RoHS/CE certification. Products are widely used in fields such as household appliances, food machinery, fitness equipment, power tools, motor vehicles, medical devices, and robotics.Core Corporate Advantages: ▸ Precision & Stability Genes: 22 full-chain quality inspection processes strictly control tolerances to ±0.01mm. ▸ Customized Services: ODM/OEM flexible production. ▸ Resource Synergy Network: Sharing parent company's large-scale intelligent production lines, ensuring delivery of tens of millions of orders.

F684 ZZ Miniature Deep Groove Ball Bearing, Zinc-Plated Anti-Corrosion, 494mm, High-Speed Low-Noise

10 - 999 pieces $0.29
1000 - 4999 pieces $0.24
>=5000 pieces $0.19

hobby This product is widely applicable to various fields of precision miniature machinery and electronic equipment. Key industries include: manufacturing of small motors, stepper motors, and cooling fans; office automation equipment such as printers, scanners, and copiers; the hobby model sector like aircraft models, car models, and remote-control toys; as well as precision instrument industries with stringent requirements on size and accuracy, such as medical instruments, optical instruments, and measuring apparatus.

Model: F684 ZZ

Size: 4*9*4

Material: GCr15

Precision Rating: P5

Lubrication: Contact Customer Service

Customization Available: True

Lead Time: standard models shipped within 10 business days.

Payment Terms: 100% T/T, or 30% T/T in advance, 70% before delivery

Product structure:

The F684 ZZ bearing is a metric miniature deep groove ball bearing. Its core dimensions are an inner diameter of 4mm, an outer diameter of 9mm, and a width of 4mm. Structurally, it features a single-row deep groove ball design with two-sided integral stamped steel shields (ZZ-type seal), effectively preventing contaminant ingress. The cage is typically a stamped steel or engineered plastic component. The bearing rings and steel balls are usually made of high-carbon chromium bearing steel (e.g., GCr15), and the surface is often zinc-plated to enhance corrosion resistance.

Key performance features:

This bearing is known for its high-speed operation capability, low rotational torque, and smooth, quiet running. The dual metal shields (ZZ) effectively block dust and fine particles without compromising high-speed performance. The zinc-plated surface offers good rust and corrosion resistance, extending service life in mildly humid environments. Its compact and lightweight structure makes it ideal for space-constrained applications. Although it is an open-type shield design, it provides excellent contamination protection and allows for easy relubrication before installation.

Main application scenarios:

The F684 ZZ bearing is typically used for shaft support in various small motors, such as gimbal motors for drones, small pump motors, and toy motors. It is a common supporting component for drive rollers and paper feed rollers in office equipment. In the modeling field, it is frequently used in drive shafts and gearboxes of remote-control cars, as well as servos and propeller motors in aircraft models. Furthermore, it is widely applied in precision rotary stages, laser head drive mechanisms, low-power electric tools, and automated instrument pointer mechanisms—any scenario requiring miniature, precise, and reliable rotational support.

Technical Specifications and Requirements:

The bearing must conform to basic dimensional standards (e.g., ISO 15 for metric series). Rotational accuracy typically reaches ABEC-1 or higher grades. The material must meet requirements for high strength and wear resistance, with post-heat-treatment hardness reaching HRC 58-64. The zinc plating should be uniform and comply with relevant salt spray test standards (e.g., achieving a certain number of hours in neutral salt spray test). The ZZ shields should be firmly fitted without significant gaps. With proper grease filling and in a clean environment, the bearing should achieve its theoretical calculated life (e.g., L10 life). Users need to select appropriate grease based on actual load (radial and axial), rotational speed, and operating temperature.

Flange miniature series bearing inner diameter 2-12mm / 法兰微型系列轴承内径2-12mm

内径Inner Diameter	外径Outside Diameter	法兰外径 Flange Outside Diameter		高度 Height		法兰宽度 Flange Width		倒角 Chamfer		基本动负荷	基本静负荷	极限转速		型号 Model
		开放型	防尘盖型	开放型	防尘盖型	开放型	防尘盖型	(r)		基本动负荷	基本静负荷	Limiting Speed		(Reference)
		(D)	(B1)	(D)	(B1)	(D)	(B1)	开放型	防尘盖型	Cr(N)Basic Dynamic	Cor(N)Basic Static	润滑脂 (Grase )	润滑剂 (Oil)	开放型	防尘盖型
(D)	(D)	(Open)	(Shield)	(Open)	(Shield)	(Open)	(Shield)	(Open)	(Shield)	Cr(N)Basic Dynamic	Cor(N)Basic Static	*1000rpm		(Open)	(Shield)
2	5	6.1	6.1	1.5	2.3	0.5	0.6	0.08	0.08	169	50	85	100	F682	F682zz
	5	6.2	6.2	2	2.5	0.6	0.6	0.1	0.1	169	50	85	100	MF52	MF52zz
	6	7.5	7.5	2.3	3	0.6	0.8	0.15	0.15	330	99	75	90	F692	F692zz
	6	7.2	7.2	2.5	一	0.6		0.15		330	98	75	90	MF62	一
	7	8.2	8.2	2.5	3	0.6	0.6	0.15	0.15	385	127	63	75	MF72	MF72zz
	7	8.5	8.5	2.8	3.5	0.7	0.9	0.15	0.15	385	127	63	75	F602	F602zz
2.5	6	7.1	7.1	1.8	2.6	0.5	0.8	0.08	0.08	208	74	71	80	F682X	E682Xzz
	7	8.5	8.5	2.5	3.5	0.7	0.9	0.15	0.15	285	127	63	75	F692X	F692Xzz
	8	9.2	9.2	一	2.5	一	0.6	一	0.2	560	179	60	67	MF82X	一
	8	9.5	9.5	2.8	4	0.7	0.9	0.15	0.15	550	175	60	71	F602	F602Xzz
3	6	7.2	7.2	2	2.5	0.6	0.6	0.1	0.1	208	74	71	80	MF63	MF63zz
	7	8.1	8.1	2	3	0.5	0.8	0.1	0.1	310	111	63	75	F683	F683zz
	8	9.2	9.2	一	2.5	一	0.6		0.15	560	179	60	67	MF83	MF83zz
	8	9.5	9.5	3	4	0.7	0.9	0.15	0.15	560	179	60	67	F693	F693zz
	9	10.2	10.6	2.5	4	0.6	0.8	0.2	0.15	570	187	56	67	MF93	MF93zz
	9	10.5	10.5		3	一	0.7		0.15	570	187	56	67	F603	F603zz
	10	11.5	11.5	4	4	1	1	0.15	0.15	630	218	50	60	F623	F623zz
4	7	8.2	8.2	2	2.5	0.6	0.6	0.1	0.1	310	115	60	67	MF74	MF74zz
	8	9.2	9.2	2	3	0.6	0.6	0.15	0.1	395	139	56	67	MF84	MF84zz
	9	10.3	10.3	2.5	4	0.6	1	0.1	0.1	640	225	53	63	F684	F684zz
	10	11.2	11.6	3	4	0.6	0.8	0.2	0.15	585	204	48	56	MF104	MF104zz
	11	12.5	12.5	4	4	1	1	0.15	0.15	960	345	48	56	F694	F694zz
	12	13.5	13.5	4	4	1	1	0.2	0.2	960	345	48	56	F604	F604zz
	13	15	15	5	5	1	1	0.2	0.2	1300	485	40	48	F624	F624zz
	16	18	18	5	5	1	1	0.3	0.3	1730	670	36	43	F634	F634zz
5	8	9.2	9.2	2	2.5	0.6	0.6	0.1	0.1	310	120	53	63	MF85	MF85zz
	9	10.2	10.2	2.5	3	0.6	0.6	0.15	0.15	430	168	50	60	MF95	MF95zz
	10	11.2	11.6	3	4	0.6	0.8	0.15	0.15	430	168	b	60	MF105	MF105zz
	11	12.5	12.5		4	0.8	1	0.15	0.15	716	282	45	53	MF115	MF115zz
	11	12.5	12.5	3	5	0.8	1	0.15	0.15	715	281	45	53	F685	F685zz
	13	15	15	4	4	1	1	0.2	0.2	1080	430	43	50	F695	F695zz
	14	16	16	5	5	1	1	0.2	0.2	1330	505	40	50	F605	F605zz
	16	18	18	5	5	1	1	0.3	0.3	1730	670	36	43	F625	F625zz
	19	22	22	6	6	1.5	1.5	0.3	0.3	2340	885	32	40	F635	F635zz
6	10	11.2	11.2	2.5	3	0.6	0.6	0.15	0.1	495	218	45	53	MF106	MF106zz
	12	13.2	13.6	3	4	0.6	0.8	0.2	0.15	715	292	43	50	MF126	MF126zz
	13	15	15	3.5	5	1	1.1	0.15	0.15	1080	440	40	50	F686	F686zz
	15	17	17	5	5	1.2	1.2	0.2	0.2	1730	670	40	45	F696	F696zz
	17	19	19	6	6	1.2	1.2	0.3	0.3	2260	835	38	45	F606	F606zz
	19	22	22	6	6	1.5	1.5	0.3	0.3	2340	885	32	40	F626	F626zz
7	11	12.2	12.2	2.5	3	0.6	0.6	0.15	0.1	455	201	43	50	MF117	MF117zz
	13	14.2	14.6	3	4	0.6	0.8	0.2	0.15	540	276	40	48	MF137	MF137zz
	14	16	16	3.5	5	1	1.1	0.15	0.15	1170	510	40	50	F687	F687zz
	17	19	19	5	5	1.2	1.2	0.3	0.3	1610	715	36	43	F697	F697zz
	19	22	22	6	6	1.5	1.5	0.3	0.3	2340	885	36	43	F607	F607zz
	22	25	25	7		1.5	1.5	0.3	0.3	3300	1370	30	36	F627	F627zz
8	12	13.2	13.6	2.5	3.5	0.6	0.8	0.15	0.1	545	275	40	48	MF128	MF128zz
	14	15.6	15.6	3.5	4	0.8	0.8	0.2	0.15	820	385	38	45	MF148	MF148zz
	16	18	18	4	5	1	1.1	0.2	0.2	1260	590	36	43	F688	F688zz
	19	22	22	6	6	1.5	1.5	0.3	0.3	2240	910	36	43	F698	F698zz
	22	25	25	7	7	1.5	1.5	0.3	0.3	3300	1370	34	40	F608	F608zz
9	17	19	19	4	5	1	1.1	0.2	0.2	1330	665	36	43	F689	F689zz
9	20	23	23	6	6	1.5	1.5	0.3	0.3	1720	840	34	40	F699	F699zz
10	15	16.5	16.5	3	4	0.8	0.8	0.3	0.3	850	430	14	16	F6700	F6700zz
	19	21	21	5	5	1	1	0.3	0.3	1700	800	35	42	F6800	F6800zz
	22	25	25	6	6	1.5	1.5	0.3	0.3	2611	1223	31	40	F6900	F6900zz
12	18	19.5	19.5	4	4	0.8	0.8	0.3	0.3	922	512	12	14	F6701	F6701zz
	21	23	23	5	5	0.8	1	0.3	0.3	1911	1041	33	39	F6801	F6801zz
	24	26.5	26.5	6	6	1	1.5	0.3	0.3	2831	1411	31	36	F6901	F6901zz

Obtain Certificate / 证书:

About US / 关于我们

> Precision & Stability Genes: 22 full-chain quality inspection processes strictly control tolerances to ±0.01mm.

> Customized Services: ODM/OEM flexible production.

> Resource Synergy Network: Sharing parent company's large-scale intelligent production lines, ensuring delivery of tens of millions of orders.

宁波轴心国际贸易有限公司成立于2025年，总部位于中国东部沿海开放城市宁波，专注轴承及五金配件领域的技术开发与全球销售。依托母公司雄厚的制造基础——12000㎡现代化生产厂房、70+自动化产线、100+专业技术团队，10+年精密制造经验，并通过ISO/RoHS/CE认证，产品广泛应用于家电、食品机械、健身器材、电动工具、机动车辆、医用器械企业核心优势：

> 精密稳定基因：22道全链质检工序严控公差±0.01mm

> 定制化服务：ODM/OEM柔性

> 资源协同网络：共享母公司规模化智能产线，保障千万级

Contact 立即联系

Model（型号）:	F684
Shield（防尘盖）:	ZZ
Precision Rating（精度等级）:	P5
d（内径）:	4
D（外径）:	9
B1（高B1）:	4
Material（材料）:	GCr15铬钢
Lubrication（润滑方式(定制)）:	联系客服Contact Customer Service
Flange Outside Diameter B1（法兰外径B1）:	10.3
Flange Width B1（法兰宽度B1）:	1
r（倒角）:	0.1
Cr (N) Basic Dynamic（基本动负荷）:	640
Cor (N) Basic Staticc（基本静负荷）:	225
Limiting Speed Grase（极限转速润滑脂）*1000rpm:	53
Limiting Speed Oil（极限转速润滑剂）*1000rpm:	63
Standard Type:	Standard parts