Provided is a method for manufacturing an endless metal ring for a continuously variable transmission using a transmission belt formed by binding a plurality of elements with the ring. A tubular body is cut into a plurality of ring bodies, and under tension, the ring body is rotated in a circumferential direction, and a grinding wheel is pressed against a lateral end of the ring body from an outer toward an inner peripheral side of the ring body to remove an edge portion on the outer peripheral side of the lateral end of the ring body formed by the cutting, and a grinding wheel is pressed against the lateral end of the ring body from the inner toward the outer peripheral side of the ring body to remove an edge portion on the inner peripheral side of the lateral end of the ring body formed by the cutting.

Provided is a method for manufacturing an endless metal ring for a continuously variable transmission using a transmission belt formed by binding a plurality of elements with the ring. A tubular body is cut into a plurality of ring bodies, and under tension, the ring body is rotated in a circumferential direction, and a grinding wheel is pressed against a lateral end of the ring body from an outer toward an inner peripheral side of the ring body to remove an edge portion on the outer peripheral side of the lateral end of the ring body formed by the cutting, and a grinding wheel is pressed against the lateral end of the ring body from the inner toward the outer peripheral side of the ring body to remove an edge portion on the inner peripheral side of the lateral end of the ring body formed by the cutting.

In a method for cleaning a portion to be welded in which a first portion (Pa) to be welded and a second portion (Pb) to be welded, which are to be joined by butt welding, are cleaned, the first and second portions (Pa, Ph) to be welded are cleaned before the butt welding by injecting, with the first and second portions (Pa, Pb) to be welded abutting on each other, plasma produced from a gas containing oxygen into a groove between the first portion (Pa) to be welded and the second portion Pb) to be welded.

A power transfer belt that includes a plurality of elements; and a ring that binds the plurality of elements annularly, wherein: the power transfer belt is wound in V grooves of a pair of pulleys of a continuously variable transmission to transfer power, the elements each have a saddle surface that contacts the ring, a pair of pillars that extend from both sides of the saddle surface in a width direction in a direction from an inner peripheral side toward an outer peripheral side of the ring, and a pair of side surfaces formed so as to extend away from each other from the inner peripheral side toward the outer peripheral side of the ring.

A power transfer belt that includes a plurality of elements; and a ring that binds the plurality of elements annularly, wherein: the power transfer belt is wound in V grooves of a pair of pulleys of a continuously variable transmission to transfer power, the elements each have a saddle surface that contacts the ring, a pair of pillars that extend from both sides of the saddle surface in a width direction in a direction from an inner peripheral side toward an outer peripheral side of the ring, and a pair of side surfaces formed so as to extend away from each other from the inner peripheral side toward the outer peripheral side of the ring.

A power transfer belt, where a peripheral length difference between an inner peripheral length of the retainer ring and an outer peripheral length of the outermost ring material is larger than a peripheral length difference between an outer peripheral length of the ring material on an inner side, of two of the ring materials which overlap each other, and an inner peripheral length of the ring material on an outer side,

A power transfer belt, where a peripheral length difference between an inner peripheral length of the retainer ring and an outer peripheral length of the outermost ring material is larger than a peripheral length difference between an outer peripheral length of the ring material on an inner side, of two of the ring materials which overlap each other, and an inner peripheral length of the ring material on an outer side,

A transfer belt wound between a primary pulley and a secondary pulley of a continuously variable transmission, the transfer belt including: a plurality of elements, each of which has a body that includes a saddle surface and a pair of pillars that extend toward a radially outer side of the transfer belt from both sides of the saddle surface in a width direction; and a bind ring that binds the plurality of elements annularly with an inner peripheral surface of the bind ring contacting the saddle surface of each of the plurality of elements.

A transfer belt wound between a primary pulley and a secondary pulley of a continuously variable transmission, the transfer belt including: a plurality of elements, each of which has a body that includes a saddle surface and a pair of pillars that extend toward a radially outer side of the transfer belt from both sides of the saddle surface in a width direction; and a bind ring that binds the plurality of elements annularly with an inner peripheral surface of the bind ring contacting the saddle surface of each of the plurality of elements.

In a chain belt having: plurality of link plates each provided with a pin hole; plurality of connecting pins to connect a part of the plurality of link plates in an endless annular form by being inserted into the pin holes across the part of the plurality of link plates in a state where the part of the plurality of link plates are overlapped; and a retainer pin welded to an end portion of the connecting pin and engaged with the link plate to prevent the link plate from coming off the connecting pin, the retainer pin is disposed in a posture in which an outer circumferential surface is in contact with an outer circumferential surface of the connecting pin, and a plurality of points on the outer circumferential surface of the retainer pin separated from each other in the circumferential direction are welded to the connecting pin.