Bearing show: Precision Deep Groove Ball Bearings(EMQ Bearings) MR74ZZ 4*7*2.5 mm
Feature : high precision, high rotating speed, low friction, small clearance, low-noise, competitive price with good quality .
Application: household appliances, dental drill, toys, electric power tools, electric motors, machine tools, measuring instruments, office machinery, Robot joint, facial beauty rollers, drone etc.
Ⅰ. Material
Corresponding designation equivalent Gcr15 | China | USA | Germany | Japan | Sweden | - |
| Gcr15 | (AISI)52100 | (DIN)100Cr6 | (JIS)SUJ2 | SKF3 | MKJ3 |
Ⅱ. Accuracy
| Country | Standard | Accuracy Grade |
| China | GB | 0 | 6 | 5 | 4 | 2 |
| ISO | ISO | 0 | 6 | 5 | 4 | 2 |
| Sweden | SKF | P0 | P6 | P5 | P4 | P2 |
| Germany | DIN | P0 | P6 | P5 | P4 | P2 |
| Japan | JIS | P0 | P6 | P5 | P4 | P2 |
| America | ANSI | ABEC1 | ABEC3 | ABEC5 | ABEC7 | ABEC9 |
Ⅲ. Vibration and Noise
According to ralated standard, the vibration noise(dB) of "DAW" bearing for their vibration under acceleration
and divided into four groups:Z1,Z2,Z3,Z4.
Also the bearing can be divided into four groups in according to vibration speed" V1,V2,V3,V4.
Ⅳ. Clearance
| Code | C2 | C3 | C4 | C5 |
| um | 3~8 | 5~10 | 6~12 | 10~16 |
Ⅴ. Retainer (Optional)
Ⅵ. Daiwa bearing series:
1.MR series bearings
2.67 series bearings
3.68 series bearings
4.69 series bearings
5.60 series bearings
6.62 series bearings
7.63 series bearings
Based on reliable quality , Daiwa has got great achievement in the field of high rotating speed, and cooperated with several aeromodelling motor companies to develop good ball bearing with high speed,low noise,long life features. Advantages in the manufacturing process gradually formed and started to take a fixed market share. Shared a very big market in excess of 70% for miniature ball bearing domestically. Especially in aeromodelling market ,we are taking 80% market share .
Ⅶ .More info about Daiwa
With over 18years of production experience and knowledge supplying of ball bearing . There is no doubt that we are professional in miniature ball bearing production and design. Our product range as deep groove ball bearing/thrust ball bearing/ thin wall ball bearing/non-standard ball /Customized bearings/bearing/Flange ball bearing. We are dedicated to produce and sell the miniature size bearings in the size of 1 - 15mm Inner diameter and Outer diameter within 30mm.We designed to assure the precise operation of the drive shaft or any rotating device with high precision and precision components mounted on the load-bearing part.
If any question Plz contact with us:
Sharon Liu
Tel: +86-138-2357-3563
mail:szdhll@dawbearing.com
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High Precision Bearing Deep Groove Ball Z3V3 P5 MR74ZZ LY121/LY551 Grease Lubrication Images
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