Claims
- 1. A rolling bearing cage prepared from a polyamide resin composition comprising:
- an aromatic polyamide which comprises (a) aromatic dicarboxylic acid constituent units comprising 60 to 100% by mole of terephthalic acid constituent units and 0 and 40% by mole or aromatic dicarboxylic acid constituent units other than terephthalic acid constituent units, and (b) straight-chain aliphatic alkylenediamine constituent units having each 6 to 18 carbon atoms, said aromatic polyamide having an intrinsic viscosity [.eta.] of 0.5 to 3.0 dl/g as measured in concentrated sulfuric acid at 30.degree. C; and
- glass fibers having each a diameter of 3 to 7 .mu.m.
- 2. The rolling bearing cage as claimed in claim 1 wherein an amount of the glass fibers is 1 to 80% by weight.
- 3. The rolling bearing cage as claimed in claim 1 wherein the glass fibers is 5 to 50% by weight.
- 4. The rolling bearing cage as claimed in claim 1 wherein the aromatic discarboxylic acid constituent units other than terephthalic acid constituent units are derived from isophthalic acid, phthalic acid, 2-methylterephthalic acid or naphthalenedicarboxylic acid.
- 5. The rolling bearing cage as claimed in claim 1 wherein the straight-chain aliphatic alkylenediame constituent units are derived from 1,6-diaminohexane, 1,7-diaminoheptane, 1,9-diaminononane, 1,10-diaminodecane, 1,11-diaminoundecane, or 1,12-diaminododecane.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-280845 |
Oct 1989 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 07/608,271 filed Nov. 2, 1990, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0121984 |
Oct 1984 |
EPX |
0291096 |
Nov 1988 |
EPX |
59-155426 |
Apr 1984 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
608271 |
Nov 1990 |
|