# US 2014/0153854 A1 · Roller bearing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153854 A1 - Document ID: US20140153854A1 - Status: Published application - Kind: A1 - Application number: 14/130,555 - Filed: 2012-07-04 - Published: 2014-06-05 - Earliest claimed: 2011-07-07 - Assignees: Ntn Corporation - Inventors: Miki Arihana; Naoaki Tsuji; Yoji Sato; Hideyuki Tsutsui; Kouya Oohira - Web page: https://patentgrep.com/patent/US20140153854A1 ## CPC - F16C 33/3706: {with concave surfaces conforming to the shape of the rolling elements, e.g. the spacing bodies are in sliding contact with the rolling elements} - F16C 19/20: with loose spacing bodies, e.g. balls, between the bearing balls - F16C 33/37: Loose spacing bodies - F16C 33/6696: {with solids as lubricant, e.g. dry coatings, powder} - F16C 19/06: with a single row or balls - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS ## Abstract A rolling bearing which is capable of preventing the rolling elements from dropping out from between the inner and the outer rings even when the separators have been worn to an advanced stage. A rolling bearing includes: a plurality of rolling elements arranged between an inner and an outer rings; and a plurality of prismatic separators disposed in a circumferential direction between the rolling elements. The separator includes integrally therewith a metal band on at least one of its outer surfaces including those which face the inner or the outer ring, or at least one of its axial side surfaces, excluding however, surfaces which face the circumferential direction and make contact with the rolling elements. The metal band has a narrower width than a width of the separator in the circumferential direction, and prevents wear of the separator from advancing beyond a certain extent. ## Claims ### Claim 1 A rolling bearing comprising: a plurality of rolling elements arranged between an inner and an outer rings; and a plurality of prismatic separators disposed in a circumferential direction between the rolling elements, wherein the separator includes integrally therewith a metal band on at least one of its outer surfaces including those which face the inner or the outer ring, excluding however, surfaces which face the circumferential direction and make contact with the rolling elements, the metal band having a narrower width than a width of the separator in the circumferential direction. ### Claim 2 (depends on 1) The rolling bearing according to claim 1, wherein the rolling elements are provided by balls. ### Claim 3 (depends on 1) The rolling bearing according to claim 1, wherein the metal band is made of stainless steel or brass. ### Claim 4 (depends on 1) The rolling bearing according to claim 1, wherein the separator is made of a solid lubricant. ### Claim 5 (depends on 4) The rolling bearing according to claim 4, wherein the solid lubricant is provided by graphite. ### Claim 6 (depends on 5) The rolling bearing according to claim 5, wherein the solid lubricant contains graphite at a rate from 80 through 98 volume percent. ### Claim 7 (depends on 4) The rolling bearing according to claim 4, wherein the solid lubricant has a bending strength from 4 through 15 MPa, and a comparative abrasion quantity from 1.5 through 2.5×10−5 mm3/(N/m). ### Claim 8 (depends on 1) The rolling bearing according to claim 1, wherein the width of the metal band has such a value that prevents the rolling elements from dropping from between the inner and the outer rings even when the separator is worn. ### Claim 9 (depends on 1) The rolling bearing according to claim 1, wherein the metal band has an inner surface facing a side surface of the separator, formed with teeth. ### Claim 10 (depends on 1) The rolling bearing according to claim 1, wherein the separator has an increasingly shorter length in the circumferential direction on a radially more inner side. ### Claim 11 (depends on 1) The rolling bearing according to claim 1, wherein the separator's surface which faces the outer ring is at least partially flat or polygonal in the circumferential direction. ### Claim 12 (depends on 1) The rolling bearing according to claim 1, wherein the separator has at least one axial side surface formed with a groove for prevention of the metal band from movement. ### Claim 13 (depends on 1) The rolling bearing according to claim 1, wherein the metal band has a narrowed width in the circumferential direction at its axially intermediate region on a surface of the separator facing the a track surface formed in the outer ring. ### Claim 14 (depends on 13) The rolling bearing according to claim 13, wherein the region of the metal band narrowed in the circumferential direction has a curved surface of a greater curvature than that of the rolling element used. ### Claim 15 (depends on 1) The rolling bearing according to claim 1, wherein the separator's surfaces facing in the circumferential direction and making contact with the rolling elements are flat. ### Claim 16 (depends on 1) The rolling bearing according to claim 1, further comprising positioning rings made of a solid lubricant, each disposed between the shield plate and the separators. ### Claim 17 (depends on 16) The rolling bearing according to claim 16, wherein the positioning ring is made of graphite containing graphite at a rate from 95 through 100 volume percent. ### Claim 18 (depends on 1) The rolling bearing according to claim 1 for use in a tenter clip.