Rubber material composition and linear motion apparatus

• US 20020061961A1
• Filed: 09/14/2001
• Published: 05/23/2002
• Est. Priority Date: 09/14/2000
• Status: Abandoned Application

• Current Assignee: NSK Limited
• Original Assignee: NSK Limited
• Inventors: Yabe, Toshikazu, Yokoyama, Keisuke, Takajo, Toshimi, Uchiyama, Takahiko
• Application Number:
  US09/951,385
• Publication Number:
  US 20020061961A1
• Time in Patent Office: Days
• US Class Current: 524/827
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/36 Silica
• CPC Class Codes: C08K 5/54 Silicon-containing compounds C08K5/0091 takes precedence
• CPC Class Codes: C08L 13/00 Compositions of rubbers containing carboxyl groups
• CPC Class Codes: C08L 23/06 Polyethene
• CPC Class Codes: C08L 23/26 modified by chemical after-treatment
• CPC Class Codes: C08L 2666/06 Homopolymers or copolymers of unsaturated hydrocarbons; Derivatives thereof
• CPC Class Codes: F16C 29/086 Seals being essentially U-shaped, e.g. for a U-shaped carriage
• CPC Class Codes: F16C 33/6603 with grease as lubricant
• CPC Class Codes: F16C 33/6648 in a porous or resinous body, e.g. a cage impregnated with the liquid

Abstract

The present invention is to offer a rubber material composition excellent in an abrasion resistance and less to cause heat by friction, and is suitably used to sealing members of rolling devises to be used with grease lubrication under severe circumstances allowing water or dusts to much exist. The rubber material composition is fabricated with carboxylated acrylonitrile-butadiene rubber.

Claims

1. A rubber material composition comprising:

carboxylated acrylonitrile-butadiene rubber.

2. The rubber material composition as set forth in claim 1, further comprising;

20 to 90 wt parts of carbon black for 100 wt parts of said carboxylated acrylonitrile-butadiene rubber.

3. The rubber material composition as set forth in claim 1, further comprising:

10 to 30 wt parts of polyolefin based resin for 100 wt parts of said carboxylated acrylonitrile-butadiene rubber.

4. A linear motion apparatus comprising:

an outer member;

an inner member disposed in opposite to the outer member via a clearance;

a plurality of rolling elements rotatably supported between said outer member and said inner member so as to move one of said outer and inner members relative to the other; and

a contact sealing member for sealing said clearance,

wherein said contact sealing member formed from a material containing said rubber material composition as set forth in claims 1 to 3 and a reinforcing member for the rubber material composition.

5. The linear motion apparatus as set forth in claim 4, wherein said outer member is a halts and said inner member is a screw shaft.

6. The linear motion apparatus as set forth in claim 4, wherein said outer member is a slider, and said inner member is a guide rail.