The quality of silk is chosen to fundamentally determine the quality of silk. Different quality silks can be correctly identified from the following five aspects: Exterior The high-quality silk has a pearl-like color and diffuse refraction of light. Clean and less impurities, the silk road is orderly and tidy; and the poor quality silk is often added with bleach and other chemicals, so that its appearance is pale, not shiny and moist, more impurities, silky roads. Touch The high-quality silk has a soft, smooth and elastic feel, and has no hard clumps; while the inferior silk has a rough touch, no flexibility, no moist feeling, and has a relatively large number of stolons, clams, oysters and oysters. taste Silk with oily or mildewy smell is inferior. combustion Silk is not flammable when burned, and it is stopped when it is separated from the flame. It is loosely gray after burning and has a burnt smell of hair. Fiber strength The better the silk stretch, the better the quality. The same length of silk, after stretching, the longer the better the quality.
Deep groove ball bearings The out looks of them are nearly the same,the only different is the size,you may need other models please check the following table for reference.are the most widely used bearing type and are particularly versatile.
Deep groove ball bearings are divided into the following series: 6000series, 6100series, 6200series, 6300series, 6400 series, 6700 series, 6800 series,6900 series,16000 series etc.
1.Small bearings|:plastic tube+carton+pallet High Ball Bearing,Miniature Ball Bearing,Deep Groove Ball Bearing,Deep Ball Bearing Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.lsjgbearing.com
Deep Groove Ball Bearings
They have low friction and are optimized for low noise and low vibration which enables high rotational speeds.
They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than other bearing types.
Model
d(mm)
D(mm)
B(mm)
6000ZZ
10
26
8
6001ZZ
12
28
8
6002ZZ
15
32
9
6003ZZ
17
35
10
6004ZZ
20
42
12
6005ZZ
25
47
12
6006ZZ
30
55
13
6007ZZ
35
62
14
6008ZZ
40
68
15
We manage in all kinds of ball bearings and roller bearings,such as
1.Deep Groove Ball Bearing
2.Self-aligning Ball Bearing
3.Cylindrical Roller Bearing
4.Spherical Contact Bearing
5.Angular Contact Bearing
6.Tapered Roller Bearing
7.Thrust Ball Bearing
8.Insert Bearing
Package
2.Medium bearings:PE bag+box+carton+pallet
3.Large bearings:PE film & paper winding+carton+pallet
4.According to the customer's requirements