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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 |