Check Rolling flag
 
 
Test flag bearing

Flag Party cured (1) Bearing

Rolling method prescribed mark following three, namely:

a. mechanical method b. galvanic corrosion method c. chemical method

Only a small amount of chemical test products; fill write code clearance groups and precision level code; and a pair of multi-joint bearing supplementary code and signs.

(2) the content and location of signs

Should generally be bearing code, year of manufacture code and factory code (or trademark), the three 120 ° spaced uniformly distributed over the surface of the ferrule end standard, as beautiful also are called distributions. But it can also be marked in accordance with product drawings shield, holding the end face of cage, ring, seals or dust device. Manufacturing Year Code shall comply with the manufacturer of the product design department.

The effective width of less than 0.8mm ferrule end surface, which allows the logo marked on the outside and packaging; for more than 0.8mm, and according to the following rules mark:

1) For non-separable bearings, allowing a ferrule end face marked with the full mark. Another difference between the reference surface of the ferrule, the ferrule to allow non-standard reference surface craft flag.

2) separation of bearings, must be marked on the full mark on each end surface of the ferrule. But also it allows one end surface of the ferrule spaced 180 ° mark on the bearing code and factory code (or trade mark).

3) using the same few models bearing rings, but these bearing the code, or by chemical methods supplemented mark on the end face of the ferrule mark.

When [Example] bearing 627 and 618 use the same outer ring on the outer end surface of the can marked "627-618."

[Example] bearing NU 2C4, NJ 204 and RNU 204 using the same outer ring, it can be on the outer end face, marked "NU-NJ-RNU 204", in which the common part of the "204" mark mechanical methods available.

(3) flag font and character height

Fonts should comply with the manufacturer of the product design department. High character height selected according to the following: 0.5,0.7,1,1.2,1.5,2,2.5,3,4,5mm. When necessary, in accordance with the provisions of product drawings, each part bearing the same font can be different sizes, whose height should be used wherever possible mutually adjacent two specifications.

(4) The mark requirements

1) The flag must be complete, intact.

2) the writing must be correct, clear; the line should be of uniform thickness. Writing should be a certain depth. For electrical erosion method; character height less than or equal to 1mm, its word depth of not less than 0.003mm; word taller than lmm but less than or equal to 2.5mm, its word depth of not less than 0.005mm; word taller than 2.5mm, its word depth of not less than 0.01mm.