Abstract: A bearing bush 1 for use in a toggle has a cylindrical metallic base material 2 and a solid lubricant 3 embedded in the metallic base material 2, and the metallic base material 2 has dead end grooves 5 formed in a cylindrical inner peripheral surface 4, an annular groove 6 formed in the cylindrical inner peripheral surface 4, and circular holes 7a and 7b as well as 7c and 7d formed in each of a pair of semicylindrical inner peripheral surfaces 4a and 4b adjacent to each other in an axial direction X and two pairs of semicylindrical inner peripheral surfaces 4c and 4d sandwiching the pair of semicylindrical inner peripheral surfaces 4a and 4b in a circumferential direction R and adjacent to each other in the axial direction X in each pair.

Abstract: A bearing bush 1 for use in a toggle has a cylindrical metallic base material 2 and a solid lubricant 3 embedded in the metallic base material 2, and the metallic base material 2 has dead end grooves 5 formed in a cylindrical inner peripheral surface 4, an annular groove 6 formed in the cylindrical inner peripheral surface 4, and circular holes 7a and 7b as well as 7c and 7d formed in each of a pair of semicylindrical inner peripheral surfaces 4a and 4b adjacent to each other in an axial direction X and two pairs of semicylindrical inner peripheral surfaces 4c and 4d sandwiching the pair of semicylindrical inner peripheral surfaces 4a and 4b in a circumferential direction R and adjacent to each other in the axial direction X in each pair.

Abstract: High-strength brass alloy having superior wear maintains single-structure ? phase and Fe—Cr—Si-based intermetallic compounds dispersed in the ? phase. A high-strength brass alloy for sliding member comprises Zn from 17% to 28%, Al from 3% to 10%, Fe from 1% to 4%, Cr from 0.1% to 4%, Si from 0.5% to 3%, mass ratio, and the remnant including Cu and inevitable impurities. The high-strength brass alloy has structure in which the matrix shows single-phase structure of ? phase and Fe—Cr—Si-based intermetallic compounds are dispersed in the ? phase. The high-strength brass alloy for sliding member has the structure in which the matrix shows single-structure of ? phase and hard Fe—Cr—Si-based intermetallic compounds are dispersed in the ? phase. Thus the hardness is increased and wear resistance is improved.

Abstract: Provided are: a sliding plate, the thickness and performance of which can be easily adjusted; and a floor plate for a turnout, using the sliding plate. A sliding plate (3) is provided with a backing material (31) comprising a steel plate or the like, a punching metal (32) disposed on the backing material (31), and a sintered meal powder layer (33) formed on the upper surface (310) of the backing material (31) so as to cover the punching metal (32). The sintered metal powder layer (33) is formed by subjecting an alloy powder for sintering to sintering and rolling, and is impregnated with a lubricating resin through heat melting. The sintered metal powder layer (33) formed on a metal area (321) of the punching metal (32) has undergone high-pressure compression and therefore exhibits a high sintered density and excellent resistance to impact, load and wear.

Abstract: High-strength brass having superior wear maintains single-structure ? phase and Fe—Cr—Si-based intermetallic compounds dispersed in the ? phase. A high-strength brass alloy for sliding member comprises Zn from 17% to 28%, Al from 3% to 10%, Fe from 1% to 4%, Cr from 0.1% to 4%, Si from 0.5% to 3%, mass ratio, and the remnant including Cu and inevitable impurities. The high-strength brass alloy has structure in which the matrix shows single-phase structure of ? phase and Fe—Cr—Si-based intermetallic compounds are dispersed in the ? phase. The high-strength brass alloy for sliding member has the structure in which the matrix shows single-structure of ? phase and hard Fe—Cr—Si-based intermetallic compounds are dispersed in the ? phase. Thus the hardness is increased and wear resistance is improved.

Abstract: High-strength brass alloy having superior wear maintains single-structure ? phase and Fe-Cr-Si-based intermetallic compounds dispersed in the ? phase. A high-strength brass alloy for sliding member comprises, Zn from 17% to 28%, Al from 3% to 10%, Fe from 1% to 4%, Cr from 0.1% to 4%, Si from 0.5% to 3%, mass ratio, and the remnant including Cu and inevitable impurities. The high-strength brass alloy has structure in which the matrix shows single-phase structure of ? phase and Fe-Cr-Si-based intermetallic compounds are dispersed in the ? phase. The high-strength brass alloy for sliding member has the structure in which the matrix shows single-structure of ? phase and hard Fe-Cr-Si-based intermetallic compounds are dispersed in the ? phase. Thus the hardness is increased and wear resistance is improved.

Abstract: High-strength brass alloy having superior wear maintains single-structure ? phase and Fe—Cr—Si-based intermetallic compounds dispersed in the ? phase. A high-strength brass alloy for sliding member comprises Zn from 17% to 28% Al from 3% to 10%, Fe from 1% to 4%, Cr from 0.1% to 4%, Si from 0.5% to 3%, mass ratio, and the remnant including Cu and inevitable impurities. The high-strength brass alloy has structure in which the matrix shows single-phase structure of ? phase and Fe—Cr—Si-based intermetallic compounds are dispersed in the ? phase. The high-strength brass alloy for sliding member has the structure in which the matrix shows single-structure of ? phase and hard Fe—Cr—Si-based intermetallic compounds are dispersed in the ? phase. Thus the hardness is increased and wear resistance is improved.

Abstract: A lock gate door (1) includes a pair of door bodies (2, 3); a pair of spherical bearings (6) for a lock gate door for rotatably supporting lower corner portions (4) of the door bodies (2, 3), respectively; and a pair of supporting portions (7) for rotatably supporting upper corner portions (5) of the door bodies (2, 3), respectively. The spherical bearing (6) includes a convex curved body (22) having a spherical surface (21) and a concave curved seat (24) having a toroidal curved surface (23) which slidably contacts the convex curved body (22), and is disposed on a downstream (16) side of a waterway (9) with respect to the supporting portion (7) in such a manner as to incline a rotational axis (C).

Abstract: A lock gate door (1) includes a pair of door bodies (2, 3); a pair of spherical bearings (6) for a lock gate door for rotatably supporting lower corner portions (4) of the door bodies (2, 3), respectively; and a pair of supporting portions (7) for rotatably supporting upper corner portions (5) of the door bodies (2, 3), respectively. The spherical bearing (6) includes a convex curved body (22) having a spherical surface (21) and a concave curved seat (24) having a toroidal curved surface (23) which slidably contacts the convex curved body (22), and is disposed on a downstream (16) side of a waterway (9) with respect to the supporting portion (7) in such a manner as to incline a rotational axis (C).