Miniature Flanged Ball Bearings

● Introduction

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The outer ring of miniature flanged ball bearings is flanged, and the bearing positioning no longer requires a bearing chock, so the axial positioning of the bearing is simpler and more economical. The flange prevents axial movement of the bearing, so the bearing can maintain good reliability and stability in a vibrating environment. In the mechanical structure design, we choose this type of bearing to simplify the mechanical structure design, and also meet the occasions when there is no connecting piece at one end of the shaft and it needs to be fixed. Like miniature ball bearings, miniature flanged ball bearings have the advantages of high precision, high speed, low vibration, and low noise, with a wide range of uses.

Flanged ball bearings are used in office equipment, medical equipment, micro motors, testing instruments, household equipment, pressure rotors, hard disk motors, stepper motors and other related fields.

● Bearing Series

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The types of the bearings include F68 series, F69 series, F60 series, MF series and FR series.

● Production Details

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◆ Forging forming process

It consists of upsetting, forming, punching, reaming and shaping processes, as follows:

1. Upsetting: The height of the blank is lowered and the diameter is increased at the same time.

2. Forming: The blank is deformed by the punch in one or several concave mold cavities, and the formed bad material that meets the process requirements is obtained. Different forming processes can obtain different shapes of forming blanks.

3. Punching: Punch out the formed material core, or cut off the damaged inner and outer rings of the tower, or punch a through hole in the center of the bad material after upsetting.

4. Reaming: Reduce the wall thickness of blank, expand its inner diameter and outer diameter at the same time, and change the cross-sectional shape of the forging.

5. Shaping: The blank after reaming is directly finished in the cavity of the concave model. This is beneficial to further improve the geometrical and dimensional accuracy of the forgings and the dimensional consistency of the same batch of forgings.

◆ Bearing steel surface quality inspection

1. Size and shape: GB/T14981-1994 "Hot-rolled wire rod size, shape, weight and allowable deviation" and GB T905-1994 "Cold-drawn round steel, square steel, hexagonal steel size, shape, weight and allowable deviation" and other standards have made relevant regulations on the size, roundness and allowable deviation of round steel.

2. Bending degree of round steel. The bending degree is specified in GB/T18254-2002 "High Carbon Chromium Bearing Steel".

3. Surface defects. Visual inspection, without cracks, scratches, folds, rust, stuttering, etc.

● Steel Ball Surface Strengthening Treatment

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After the surface of the steel ball is strengthened, it is in a state of compressive stress, which is related to the plastic deformation of the metal in the cold state. When the metal is plastically deformed in the cold state, the character is distorted, elongated, and broken, and many atoms are moved from the original densest atomic arrangement, resulting in The density of the metal decreases and the volume increases, while the metal in the subsurface layer does not undergo plastic deformation, and has good elasticity, which hinders the increase in the volume of the surface metal. In this way, the metal in the subsurface layer exerts compressive stress on the surface metal. The surface strengthening of steel balls often adopts mechanical collision method. On the horizontal metal cylinder wall, there are evenly distributed lifting bucket steel plates for lifting steel balls along the circumference. A small amount of diesel oil is added to the cylinder, and the cylinder is rotated at a low speed to make the surfaces of the steel balls collide with each other. Be strengthened, when strengthening small steel balls (diameter ≤ 10mm), a high-speed rotating inner cylinder is also installed in the cylinder to enhance the collision ability. The strengthening process is generally arranged after hard grinding and before fine grinding.

● Why Choose Us

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Our company has strong technical force and is equipped with advanced processing equipment. There are more than 60 main bearing processing devices and more than 10 auxiliary devices. Our company keeps up with the the bearing industry development trend, updates and adds advanced processing equipment constantly, provides customers with reliable and competitive price bearing products, customer-centric to create value for customers.

● About Us

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Shaanxi Gainhui Heavy Industries Co., Ltd. is a professional bearing manufacturer and and distributor in china. Equipped with a professional large factory, we can supply competitive bearing products and OEM service to worldwide customers. With high quality, competitive price and great after-sale service of miniature flanged ball bearings, welcome to contact us in time.

Because we are focused, we are professional.

● Packing Methods

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Tube Package

Single Box Package

Pallet Package

● Delivery Methods

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By Express

By Sea

By Air

● Technical Parameters

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Bearing designation	Dimensions (mm)								Basic dynamic load rating	Basic static load rating	Limiting speed for lubrication with grease	Limiting speed for lubrication with oil
	d	D	D1		B1	B	C2	C1	Cr	Cor	nG	nB
			Open	ZZ	Open	ZZ	Open	ZZ	N	N	min–1	min–1
F682ZZ	2	5	6.1	6.1	1.5	2.3	0.5	0.6	169	50	85 000	100 000
MF52ZZ	2	5	6.2	6.2	2	2.5	0.6	0.6	169	50	85 000	100 000
F692ZZ	2	6	7.5	7.5	2.3	3	0.6	0.8	330	99	75 000	90 000
MF62ZZ	2	6	7.2	7.2	2.5	2.5	0.6	-	330	99	75 000	90 000
MF72ZZ	2	7	8.2	8.2	2.8	3	0.6	0.6	386	129	63 000	75 000
F602ZZ	2	7	8.5	8.5	2.8	3.5	0.7	0.9	386	129	60 000	71 000
F682XZZ	2.5	6	7.1	7.1	1.8	2.6	0.5	0.8	209	74	71 000	80 000
F692XZZ	2.5	7	8.5	8.5	2.5	3.5	0.7	0.9	386	129	63 000	75 000
MF82X	2.5	8	9.2	9.2	2.5	-	0.6	-	558	180	60 000	67 000
F602XZZ	2.5	8	9.5	9.5	2.8	4	0.7	0.9	552	177	60 000	71 000
MF63ZZ	3	6	7.2	7.2	2	2.5	0.6	0.6	209	74	71 000	80 000
F683ZZ	3	7	8.1	8.1	2	3	0.5	0.8	311	112	63 000	75 000
MF83ZZ	3	8	9.2	9.2	2.5	3	0.6	-	395	141	60 000	67 000
F693ZZ	3	8	9.5	9.5	3	4	0.7	0.9	558	180	60 000	67 000
MF93ZZ	3	9	10.2	10.6	2.5	4	0.6	0.8	571	189	56 000	67 000
F603ZZ	3	9	10.5	10.5	3	5	0.7	-	571	189	56 000	67 000
F623ZZ	3	10	11.5	11.5	4	4	1	1	631	219	50 000	60 000
MF74ZZ	4	7	8.2	8.2	2	2.5	0.6	0.6	255	108	60 000	67 000
MF84ZZ	4	8	9.2	9.2	2	3	0.6	0.6	395	141	56 000	67 000
F684ZZ	4	9	10.3	10.3	2.5	4	0.6	1	641	227	53 000	63 000
MF104ZZ	4	10	11.2	11.6	3	4	0.6	0.8	711	272	48 000	56 000
F694ZZ	4	11	12.5	12.5	4	4	1	1	957	350	48 000	56 000
F604ZZ	4	12	13.5	13.5	4	4	1	1	957	350	48 000	56 000
F624ZZ	4	13	15	15	5	5	1	1	1301	488	40 000	48 000
F634ZZ	4	16	18	18	5	5	1	1	1340	523	36 000	43 000
MF85ZZ	5	8	9.2	9.2	2	2.5	0.6	0.6	218	90	53 000	63 000
MF95ZZ	5	9	10.2	10.2	2.5	3	0.6	0.6	431	169	50 000	60 000
MF105ZZ	5	10	11.2	11.6	3	4	0.6	0.8	431	169	50 000	60 000
MF115ZZ	5	11	12.5	12.5	-	4	0.8	1	716	282	45 000	53 000
F685ZZ	5	11	12.5	12.5	3	5	0.8	1	716	282	45 000	53 000
F695ZZ	5	13	15	15	4	4	1	1	1077	432	43 000	50 000
F605ZZ	5	14	16	16	5	5	1	1	1329	507	40 000	50 000
F625ZZ	5	16	18	18	5	5	1	1	1729	675	36 000	43 000
F635ZZ	5	19	22	22	6	6	1.5	1.5	2336	896	32 000	40 000
MF106ZZ	6	10	11.2	11.2	2.5	3	0.6	0.6	496	218	45 000	53 000
MF126ZZ	6	12	13.2	13.6	3	4	0.6	0.8	716	295	43 000	50 000
F686ZZ	6	13	15	15	3.5	5	1	1.1	1082	442	40 000	50 000
F696ZZ	6	15	17	17	5	5	1.2	1.2	1340	523	40 000	45 000
F606ZZ	6	17	19	19	6	6	1.2	1.2	2263	846	38 000	45 000
F626ZZ	6	19	22	22	6	6	1.5	1.5	2336	896	32 000	40 000
MF117ZZ	7	11	12.2	12.2	2.5	3	0.6	0.6	455	202	43 000	50 000
MF137ZZ	7	13	14.2	14.6	3	4	0.6	0.8	541	276	40 000	48 000
F687ZZ	7	14	16	16	3.5	5	1	1.1	1173	513	40 000	50 000
F697ZZ	7	17	19	19	5	5	1.2	1.2	1605	719	36 000	43 000
F607ZZ	7	19	22	22	6	6	1.5	1.5	2336	896	36 000	43 000
F627ZZ	7	22	25	25	7	7	1.5	1.5	3287	1379	30 000	36 000
MF128ZZ	8	12	13.2	13.6	2.5	3.5	0.6	0.8	543	274	40 000	48 000
MF148ZZ	8	14	15.6	15.6	3.5	4	0.8	0.8	817	386	38 000	45 000
F688ZZ	8	16	18	18	4	5	1	1.1	1252	592	36 000	43 000
F698ZZ	8	19	22	22	6	6	1.5	1.5	2237	917	36 000	43 000

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