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624 Bearings Description:

S-Materail Codes	Blank -Gcr 15(Chrome Steel)
S-Materail Codes	S -440C(Stainless Steel)
FRing/OD Modification Codes	F- Flanged Outer Ring
FRing/OD Modification Codes	W – Extended Inner Ring
FRing/OD Modification Codes	FW -Flanged Outer/Extended Inner Ring
608	Basic Bearing Number Codes
2RS – Shield/Closure Codes	Blank – Open Bearing
2RS – Shield/Closure Codes	Z- Single Shield
2RS – Shield/Closure Codes	7Z – Double Shields
2RS – Shield/Closure Codes	RS – Single Seal
2RS – Shield/Closure Codes	2RS – Double Seals
NR-Snap Ring Codes	N – Groove Without Ring
NR-Snap Ring Codes	NR – Groove With Ring
C3 – Internal Clearance Codes	Blank – Standard
C3 – Internal Clearance Codes	C2 – Tight
C3 – Internal Clearance Codes	C3-Loose
C3 – Internal Clearance Codes	C4 -Loose Than C3
C3 – Internal Clearance Codes	C5-Loose Than C4
V3 – Vibration Level Codes	Blank – Standard
V3 – Vibration Level Codes	V4 – Ultralow Noise
V3 – Vibration Level Codes	V3 – Low Noise
V3 – Vibration Level Codes	V2 – Electric Motor Quality
V3 – Vibration Level Codes	V1 – Above Standard,Less Than V2
A3 -ABEC Tolerance Codes	Blank – ABEC 1
A3 -ABEC Tolerance Codes	A3 – ABEC 3
A3 -ABEC Tolerance Codes	A5 – ABEC 5
A3 -ABEC Tolerance Codes	A7 – ABEC 7

624 Bearings Rust-resisting Under the normal storage and preserve protect condition, the bearing’s rustresisting period is half a year over, you should have to check it over before the expiring date of rustresisting has been past then rustresisted again according to the stipulation so as to keep them not rusty.   624 Bearing Clearance in accordance with the standard of 1S0 5753,The radial clearance can be divided into five groups.Radial Clearance Value without load See Table:

Application of 624 bearings:

NSAR are widely used in household appliance. micro-motors electrical tools garden machinery, motorcycles,automobiles,medical equipment, sports machinery, textile machinery and agricultural machinery.

Advantages of 624 bearing:

The bearings we manufacture are all low noise,low vibration,low friction, high precision, high sealed,high turning speed and long life.

Quality assurance certificate of 624 deep groove ball bearings:

Quality is the key point for the NSAR. bearing’s growth and development, which always regards the improvement of high quality and service as the long-term-development strategy. NSAR has passed IS09001: 2000, 1S09001: 2008, and will struggle for the NSAR in long term.

Gr(um) 624 Deep groove ball bearings radial clearance:

Bore diameter D(mm)	Bore diameter D(mm)	《C2) Group 2	《C2) Group 2	(0) Standard group	(0) Standard group	《C3) Group 3	《C3) Group 3	(C4) Group 4	(C4) Group 4	《C5) Group 5	《C5) Group 5
over	to	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
2.5	6	0	7	2	13	8	23	–	–	–	–
6	10	0	7	2	13	8	23	14	29	20	37
10	18	0	9	3	18	11	25	18	33	25	45
18	24	0	10	5	20	13	28	20	36	28	48
24	30	1	11	5	20	13	28	23	41	30	53
30	40	1	11	6	20	15	33	28	46	40	64
40	50	1	11	6	23	18	36	30	51	45	73
50	65	1	12	8	28	23	43	38	61	55	90