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SKF - Rolling Bearings

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15H Polymer ball bearings<br />

Materials<br />

<strong>SKF</strong> polymer ball bearings can be manufactured<br />

from a variety of materials and material<br />

combinations. The selected materials depend<br />

on the application conditions. Polymer ball<br />

bearings are available in the four standard<br />

material combinations listed in table 1 for<br />

single row deep groove ball bearings and in<br />

table 2 for thrust ball bearings. A four-digit<br />

combination designation suffix († Designation<br />

system, page 1260) identifies the selected<br />

materials.<br />

Table 1<br />

Standard material combinations for single row deep groove ball bearings<br />

Combination Rings Balls Cage Combination,<br />

designation suffix<br />

1 Polyoxymethylene Stainless steel Polyamide 66 11TN<br />

(POM)<br />

(PA66)<br />

2 Polyoxymethylene Glass Polyamide 66 11QN<br />

(POM)<br />

(PA66)<br />

3 Polypropylene Stainless steel Polypropylene 22T2<br />

(PP)<br />

(PP)<br />

4 Polypropylene Glass Polypropylene 22Q2<br />

(PP)<br />

(PP)<br />

Table 2<br />

Standard material combinations for thrust ball bearings<br />

Combination Washers and alternate balls Balls (selected material) Combination,<br />

designation suffix<br />

1 Polyoxymethylene Stainless steel 11T1<br />

(POM)<br />

2 Polyoxymethylene Glass 11Q1<br />

(POM)<br />

3 Polypropylene Stainless steel 22T2<br />

(PP)<br />

4 Polypropylene Glass 22Q2<br />

(PP)<br />

1250

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