Q:What are the miniature bearings do we produce?

Shenzhen Xindawei (SD) Bearing Co.,Ltd is a professional bearing manufacturer, specializing inmaking miniature ball bearings, of which the bore diameter is 1-12mm and the outer diameter below 30mm.The products include those of metric series, R-series deep groove ball bearings with flange and without flange ,thrust ball bearing as well as single-direction needle roller bearing.

 

Q:What are our most competitive bearings?

 Those of metric series, inch -series deep groove ball bearings with flange and without flange ,thrust ball bearing as well as single-direction needle roller bearing with inner diameter 1-12mm,outer diameter less 30mm.

 

Q:What are the types of the Flanged bearing we produce?

Bearings with a flange on the outer ring simplify axial location. These bearings are cost effective by not requiring spot facing when housing the end face. According to the customer’s requirements,we could produce any sizes of the bearing with flange. Some main types and sizes of the bearing with flange which we produce are as follows:

Type	Bore Diameter	Outer Diameter	Flange Outer Diameter		Width		Flange Width		Load Rating Cr(N)	Load Rating Cor(N)	Max.Speed
											Grease	Oil
			OPEN	ZZ	OPEN	ZZ	OPEN	ZZ			*1000rpm
F682ZZ	2	5	6.1		1.5	2.3	0.5	0.6	169	50	85	100
MF52ZZ		5	6.2		2	2.5	0.6	0.6	169	50	85	100
F692ZZ		6	7.5		2.3	3	0.6	0.8	330	99	75	90
MF62ZZ		6	7.2		2.5	2.5	0.6	-	330	99	75	90
MF72ZZ		7	8.2		2.8	3	0.6	0.6	386	129	63	75
F602ZZ		7	8.5		2.8	3.5	0.7	0.9	386	129	60	71
F682XZZ	2.5	6	7.1		1.8	2.6	0.5	0.8	209	74	71	80
F692XZZ		7	8.5		2.5	3.5	0.7	0.9	386	129	63	75
MF82X		8	9.2		2.5	-	0.6	-	558	180	60	67
F602XZZ		8	9.5		2.8	4	0.7	0.9	552	177	60	71
MF63ZZ	3	6	7.2		2	2.5	0.6	0.6	209	74	71	80
F683ZZ		7	8.1		2	3	0.5	0.8	311	112	63	75
MF83ZZ		8	9.2		2.5	3	0.6	-	395	141	60	67
F693ZZ		8	9.5		3	4	0.7	0.9	558	180	60	67
MF93ZZ		9	10.2	10.6	2.5	4	0.6	0.8	571	189	56	67
F603ZZ		9	10.5		3	5	0.7	-	571	189	56	67
F623ZZ		10	11.5		4	4	1	1	631	219	50	60
MF74ZZ	4	7	8.2		2	2.5	0.6	0.6	255	108	60	67
MF84ZZ		8	9.2		2	3	0.6	0.6	395	141	56	67
F684ZZ		9	10.3		2.5	4	0.6	1	641	227	53	63
MF104ZZ		10	11.2	11.6	3	4	0.6	0.8	711	272	48	56
F694ZZ		11	12.5		4	4	1	1	957	350	48	56
F604ZZ		12	13.5		4	4	1	1	957	350	48	56
F624ZZ		13	15		5	5	1	1	1301	488	40	48
F634ZZ		16	18		5	5	1	1	1340	523	36	43
MF85ZZ	5	8	9.2		2	2.5	0.6	0.6	218	90	53	63
MF95ZZ		9	10.2		2.5	3	0.6	0.6	431	169	50	60
MF105ZZ		10	11.2	11.6	3	4	0.6	0.8	431	169	50	60
MF115ZZ		11	12.5		-	4	0.8	1	716	282	45	53
F685ZZ		11	12.5		3	5	0.8	1	716	282	45	53
F695ZZ		13	15		4	4	1	1	1077	432	43	50
F605ZZ		14	16		5	5	1	1	1329	507	40	50
F625ZZ		16	18		5	5	1	1	1729	675	36	43
F635ZZ		19	22		6	6	1.5	1.5	2336	896	32	40
MF106ZZ	6	10	11.2		2.5	3	0.6	0.6	496	218	45	53
MF126ZZ		12	13.2	13.6	3	4	0.6	0.8	716	295	43	50
F686ZZ		13	15		3.5	5	1	1.1	1082	442	40	50
F696ZZ		15	17		5	5	1.2	1.2	1340	523	40	45
F606ZZ		17	19		6	6	1.2	1.2	2263	846	38	45
F626ZZ		19	22		6	6	1.5	1.5	2336	896	32	40
MF117ZZ	7	11	12.2		2.5	3	0.6	0.6	455	202	43	50
MF137ZZ		13	14.2	14.6	3	4	0.6	0.8	541	276	40	48
F687ZZ		14	16		3.5	5	1	1.1	1173	513	40	50
F697ZZ		17	19		5	5	1.2	1.2	1605	719	36	43
F607ZZ		19	22		6	6	1.5	1.5	2336	896	36	43
F627ZZ		22	25		7	7	1.5	1.5	3287	1379	30	36
MF128ZZ	8	12	13.2	13.6	2.5	3.5	0.6	0.8	543	274	40	48
MF148ZZ		14	15.6		3.5	4	0.8	0.8	817	386	38	45
F688ZZ		16	18		4	5	1	1.1	1252	592	36	43
F698ZZ		19	22		6	6	1.5	1.5	2237	917	36	43
F608ZZ		22	25		7	7	1.5	1.5	3293	1379	34	40
F689ZZ	9	17	19		4	5	1	1.1	1327	668	36	43
F699ZZ		20	23		6	6	1.5	1.5	2467	1081	34	40

 

Q:What are the types of the inch-Flange bearing we produce?

Bearings with a flange on the outer ring simplify axial location. These bearings are cost effective by not requiring spot facing when housing the end face. According to the customer’s requirements,we could produce any sizes of the inch-Flange bearing. Some main types and sizes of the bearing with flange which we produce are as follows:

Type	Bore Diameter	Outer Diameter	Flange Outer Diameter	Width		Flange Width		Load Rating Cr(N)	Load Rating Cor(N)	Max.Speed
										Grease	Oil
				OPEN	ZZ	OPEN	ZZ			*1000rpm
FR1-4ZZS	1.984	6.350	7.518	2.380	3.571	0.584	0.787	284	96	67	80
FR133ZZ	2.380	4.762	5.944	1.588	2.380	0.457	0.787	144	53	80	95
FR1-5ZZS		7.938	9.119	2.779	3.571	0.584	0.787	552	176	60	71
FR144ZZS	3.175	6.350	7.518	2.380	2.779	0.584	0.787	284	96	67	80
FR2-5ZZ		7.938	9.119	2.779	3.571	0.584	0.787	558	180	60	67
FR2-6ZZS		9.525	10.719	2.779	3.571	0.584	0.787	640	227	53	63
FR2ZZ		9.525	11.176	3.967	3.967	0.762	0.762	631	219	56	67
FR155ZZS	3.967	7.938	9.119	2.779	3.175	0.584	0.914	359	150	53	63
FR156ZZS	4.762	7.938	9.119	2.779	3.175	0.584	0.914	359	150	53	63
FR166ZZ		9.525	10.719	3.175	3.175	0.584	0.787	709	272	50	60
FR3ZZ		12.700	14.351	4.978	4.978	1.067	1.067	1301	488	43	53
FR168ZZS	6.350	9.525	10.719	3.175	3.175	0.584	0.914	373	172	48	56
FR188ZZ		12.700	13.894	3.175	4.762	0.584	1.143	1082	442	40	50
FR4ZZ		15.875	17.526	4.978	4.978	1.067	1.067	1480	621	38	45
FR1810ZZS	7.938	12.700	13.894	3.967	3.967	0.787	0.787	542	276	40	48
FR6ZZ	9.525	22.225	24.613	5.558	7.142	1.570	1.570	3332	1422	32	38

 

Q:What are the types of the miniature bearing we produce?

Miniature bearings are suitable for products requiring high-speed rotation, low-friction torque, low vibration and low noise. According to the customer’s requirements,we could produce any sizes of the miniature bearing. Some main types and sizes of the miniature bearing which we produce are as follows:

Type	Bore Diameter	Outer Diameter	Width		Load Rating Cr(N)	Load Rating Cor(N)	Max. Speed
			OPEN	ZZ			Grease	Oil
							*1000rpm
681	1	3	1	-	96	26	130	150
691		4	1.6	-	141	37	100	120
681xZZ	1.5	4	1.2	2	112	33	100	120
691xZZ		5	2	2.6	169	50	85	100
601xZZ		6	2.5	3	330	99	75	90
682ZZ	2	5	1.5	2.3	169	50	85	100
MR52ZZ		5	2	2.5	169	50	85	100
692ZZ		6	2.3	3	330	99	75	90
MR62ZZ		6	2.5	2.5	330	99	75	90
MR72ZZ		7	2.8	3	386	129	63	75
602ZZ		7	2.8	3.5	386	129	60	71
682 XZZ	2.5	6	1.8	2.6	209	74	71	80
692 XZZ		7	2.5	3.5	386	129	63	75
MR82X		8	2.5	-	558	180	60	67
602XZZ		8	2.8	4	552	177	60	71
MR63ZZ	3	6	2	2.5	209	74	71	80
683ZZ		7	2	3	311	112	63	75
MR83ZZ		8	2.5	3	395	141	60	67
693ZZ		8	3	4	558	180	60	67
MR93ZZ		9	2.5	4	571	189	56	67
603ZZ		9	3	5	571	189	56	67
623ZZ		10	4	4	631	219	50	60
633ZZ		13	5	5	1301	488	40	48
MR74ZZ	4	7	2	2.5	255	108	60	67
MR84ZZ		8	2	3	395	141	56	67
684ZZ		9	2.5	4	641	227	53	63
MR104ZZ		10	3	4	711	272	48	56
694ZZ		11	4	4	957	350	48	56
604ZZ		12	4	4	957	350	48	56
624ZZ		13	5	5	1301	488	40	48
634ZZ		16	5	5	1340	523	36	43
MR85ZZ	5	8	2	2.5	218	90	53	63
MR95ZZ		9	2.5	3	431	169	50	60
MR105ZZ		10	3	4	431	169	50	60
MR115ZZ		11	-	4	716	282	45	53
685ZZ		11	3	5	716	282	45	53
695ZZ		13	4	4	1077	432	43	50
605ZZ		14	5	5	1329	507	40	50
625ZZ		16	5	5	1729	675	36	43
635ZZ		19	6	6	2336	896	32	40
MR106ZZ	6	10	2.5	3	496	218	45	53
MR126ZZ		12	3	4	716	295	43	50
686ZZ		13	3.5	5	1082	442	40	50
696ZZ		15	5	5	1340	523	40	45
606ZZ		17	6	6	2263	846	38	45
626ZZ		19	6	6	2336	896	32	40
636ZZ		22	7	7	3333	1423	30	36
MR117ZZ	7	11	2.5	3	455	202	43	50
MR137ZZ		13	3	4	541	276	40	48
687ZZ		14	3.5	5	1173	513	40	50
697ZZ		17	5	5	1605	719	36	43
607ZZ		19	6	6	2336	896	36	43
627ZZ		22	7	7	3287	1379	30	36
637ZZ		26	9	6	4563	1983	28	34
MR128ZZ	8	12	2.5	3.5	543	274	40	48
MR148ZZ		14	3.5	4	817	386	38	45
688ZZ		16	4	5	1252	592	36	43
698ZZ		19	6	6	2237	917	36	43
608ZZ		22	7	7	3293	1379	34	40
628ZZ		24	8	8	3333	1423	28	34
638ZZ		28	9	9	4563	1983	28	34
679ZZ	9	14	3	4.5	919	468	36	42
689ZZ		17	4	5	1327	668	36	43
699ZZ		20	6	6	2467	1081	34	40
609ZZ		24	7	7	3356	1444	32	38
629ZZ		26	8	8	4575	1983	28	34
639ZZ		30	10	10	4659	2080	24	30
6700zz	10	15	4	4	855	435	15	17
6800zz		19	5	5	1716	840	37	43
6900zz		22	6	6	2695	1273	34	41
6000zz		26	8	8	4550	1970	30	36
6200zz		30	9	9	5100	2390	24	30
6300zz		35	11	11	8100	3450	22	26
6701zz	12	18	4	4	926	530	13	15
6801zz		21	5	5	1915	1041	33	39
6901zz		24	6	6	2886	1466	31	36
6001zz		28	8	8	5100	2370	28	32
6201zz		32	10	10	6800	3050	22	28
6301zz		37	12	12	9700	4200	990	425
6702zz	15	21	4	4	937	582	11	13
6802zz		24	5	5	2073	1253	28	33
6902zz		28	7	7	4321	2259	26	30
6002zz		32	9	9	5600	2830	24	28
6202zz		35	11	11	7650	3750	20	24
6302zz		42	13	13	11400	5450	17	20
6703zz	17	23	4	4	1000	658	9.5	11
6803zz		26	5	5	2233	1456	26	30
6903zz		30	7	7	4588	2565	23	38
6003zz		35	10	10	6000	3250	22	26
6203zz		40	12	12	9550	4800	17	20
6303zz		47	14	14	13600	6650	15	18

 

Q:What’s the characteristic of the ceramic ball bearing we produce?

Ceramic Ball Bearing

The hybrid ceramic ball bearing developed by Shenzhen Xindawei (SD) Bearing Co.,Ltd . features bearing rings made of bearing steel (Gcr15) or stainless steel (9cr18). The ceramic ball bearing is mainly made of silicon nitride (Si3N4),rconia (ZrO2) or alumina (Al2O3),among which Si3N4 is of excellent overall erformance and has become the preferred material for ceramic ball bearing.
    The density of Si3N4 ceramic is 3.20g/cm3, much lower than that of bearing steel (7.85g/cm3). For this reason, the ceramic rolling element can effectively restrain the centrifugal force generated by high-speed rotation and reduce the load of rolling element.
Meanwhile, it can also reduce the rotational slide between the rolling element and the raceway surface and thus prevent surface damage. Therefore, ceramic ball bearing is the best choice for high-speed rotation application, such as high-speed motor spindle bearing, machine spindle bearing, dental drill bearing, high-speed wheelhead bearing, instrument bearing and hard drive bearing. It can also be used in civilian products like roller skate, aeromodelling and electric toy.

The introductions of the ball bearings

Single-row deep groove ball bearings are the most common type of rolling bearing, having a wide range of suitable applications. The raceway grooves on both inner and , outer rings have circular arcs of slightly larger radius than that of the balls. In addition to radial loads, axial loads can be applied in either direction. Because of their low torque, they offer high speed operation with low power loss. Miniature and instrument bearings are made with very high levels of precision, therefore these are generally used in applications where accurate rotational performance and low torque is necessary, and load capacity is a secondary issue


    It acts as a professional exporter of china made quality bearings,the products covering precise ball bearings,needle roller bearings,ang, ular contact ball bearings,pillow block,linear motion ball bearings 5 series.It's business focus on small and middle size bearings as these china bearing's quality has been well enhanced upon the rapid progress of producing technics and quality control.

    Up to now,we have been termly exporting bearings to The Netherlands,Canada,U.S.A, Iran,etc countrys.We keep continual and friendly business relationship with our customers this owed to quality products and our responsible service.

    Our goal is to promote high performance china made bearings to our customers.With the rapid developping of technology and production level in china,we believe that more and more quality china made bearings will be available to our customers.

Welcome to contact us for further business!


    Specializes in the manufacture of Deep Groove Ball Bearings, Miniature Ball Bearings, Special non-standard bearings. With a monthly output of 1.1 million pieces of bearing products. The company is characterized by ball bearing production and strong capability of new product development. Quality and punctuality are backbone of the company. Our products are mainly sold to U.S.A., Canada, Brazil, Europe, Africa, Southeast Asia and so on.

    The bore size of CNDD brand rolling bearing ranges from ¢3 to ¢70mm,and inculding Inch size.The CNDD bearings feature low vibration,low noise,high rotary accuracy,low friction torque,excellent sealing,high speed running,low price and long service life.They might be widely used in transmission devices such as micro and special motors,household appliance,medical devices,communication facilities,sports ware and office

The ball bearing manufacturers - SD

Our company is specialized in manufacturing and selling all kinds of rolling bearings such as deep groove ball bearings, cylindrical/tapered roller bearings, needle roller bearings, thrust ball bearings and so on, especially EMQ grade bearings and miniature ball bearings.

    We provide bearings products for customers all over the world. With over 8 years' experience in bearings market, we have built up good relationship with all of our customers. We always get satisfactory feedback from our customers because of the high quality products. Owning high technology both in design and manufacturing, we always supply the quality, stable, economic bearings and proper technical services.

Our quality goal is "None Defect". Our bearing is your best choice! Trust you, trust me!

 

Q:What are the types of the inch miniature bearing we produce?

Miniature bearings are suitable for products requiring high-speed rotation, low-friction torque, low vibration and low noise. According to the customer’s requirements,we could produce any sizes of the inch miniature bearing. Some main types and sizes of the inch miniature bearing which we produce are as follows:

Type	Bore Diameter	Outer Diameter	Width		Load Rating Cr(N)	Load Rating Cor(N)	Max. Speed
			OPEN	ZZ			Grease	Oil
							*1000rpm
R1-4ZZ	1.984	6.350	2.380	3.571	284	96	67	80
R133ZZ	2.380	4.762	1.588	2.380	144	53	80	95
R1-5ZZ	2.380	7.938	2.779	3.571	552	176	60	71
R144JZZS	3.175	6.350	2.380	2.779	311	110	67	80
R144ZZ		6.350	2.380	2.779	284	96	67	80
R2-5ZZ		7.938	2.779	3.571	558	180	60	67
R2-6ZZ		9.525	2.779	3.571	640	227	53	63
R2ZZ		9.525	3.967	3.967	631	219	56	67
R2AZZ		12.700	4.366	4.366	640	227	53	63
R155ZZ	3.967	7.938	2.779	3.175	359	150	53	63
R156ZZ	4.762	7.938	2.779	3.175	359	150	53	63
R166ZZ		9.525	3.175	3.175	709	272	50	60
R3ZZ		12.700	3.967	4.978	1301	488	43	53
R3AZZ		15.875	4.978	4.978	1480	621	38	45
R168ZZ	6.350	9.525	3.175	3.175	373	172	48	56
R188ZZ		12.700	3.175	4.762	1082	442	40	50
R4ZZ		15.875	4.978	4.978	1480	621	38	45
R4AZZ		19.050	5.558	7.142	2336	896	36	43
R1810ZZ	7.938	12.700	3.967	3.967	542	276	40	48
R6ZZ	9.525	22.225	5.558	7.142	3332	1422	32	38