Do you know the bearing types of foreign rolling mills?

At present, the general model of the major brands using ISO standard, we are also easy to identify. Bearing manufacturers have their own naming rules for rolling mills, rotary tables and inch tapered bearings. The typical types of rolling mill bearings commonly used abroad are summarized as follows:

Tetrachyconic class

1. SKF follows the following rules for naming four cones:

2. NSK naming conventions：

  100 kv1701:

The first three 100 bits represent an inside diameter of 100mm, and the 6-8 bit 170 bits represent an outside diameter of 170mm. If KV is below 4 digits, the outside diameter cannot be determined.

  440 kve5901e:

The first three digits, 440, represent an inside diameter of 440mm, and the 7-9 digits, 590, represent an outside diameter of 590m.

  STF450KVS5901:

The 4-6 bits represent an inside diameter of 450mm and the 10-12 bits represent an outside diameter of 590mm.

The four-row cone of NSK has three structures: KV, KVE and KVS. The structure of KVE and KVS is sealed design, which has the characteristics of long life and less lubrication.

3. Naming conventions for Koyo (JTEKT)

  A. Common four-row cone:

  47 t131010:

47T represents four tapers, 4-5 position 13 represents an inside diameter of 65mm (13*5), if the inside diameter is more than 500mm, 4TR+ inner ring inside diameter number (4TR500B)

  In 37276, 47376:

The first two represent four rows of tapers, the third represents the width series, and the 4-5 represents the inner diameter of 380mm (76*5).

  B. Four rows of cones with special structure

  45 d724535:

45D represents a special structure with four columns of cones, with 4-5 bits representing an inside diameter of 360mm (72*5), 6-7 bits representing an outside diameter of 450mm (45*10), and 8-9 bits representing a width of 350mm (35*10).

  C, the sealing structure of four rows of cones

  47 ts563829:

The 47TS is represented as a sealed four-row cone, with 5-6 bits representing an inside diameter of 280mm (56*5), 7-8 bits representing an outside diameter of 380mm (38*10), and 9-10 bits representing a width of 290mm (29*10).

4. NTN naming rules

  An open tetragonal cone:

6259XX, 6230XX, 6231XX, CRO series.

Sealing four row taper:

CRO... LL

In addition to the commonly used four-row cylinder and four-row cone, rolling mill bearings also involve deep groove ball, angular contact and thrust bearings. Most SKF models are adopted. Although the range of dimensions cannot be seen, the category can be simply judged. For example, rolling mills with deep groove ball bearings generally start at 306, such as 306841; Angular contact ball bearings generally start at 305, such as 305262D; Bidirectional thrust roller bearings generally start at 35, such as 351019C; The down bearing is generally the inside diameter size +TFV/TFX, such as 800TFX01, 149TFV01.