The utility model provides a forging formula monaural positioner, includes inclined cantilever, holding ring and registration arm, it includes staple bolt and rotatory ears to decide the outer loop, the staple bolt is connected with inclined cantilever, rotatory ears both ends have mutually perpendicular's first ears and second ears, the staple bolt is articulated with first ears through the monaural that the lower part has, the registration arm includes forging formula monaural, registration arm body and connecting piece, forging formula monaural constitutes by supporting monaural and grafting portion, grafting portion cross -section is " ten " style of calligraphy post muscle structure, forging formula monaural is through grafting portion cartridge at this end of body of registration arm to through two each other the crisscross connecting pieces that distribute pass registration arm body and " ten " style of calligraphy post muscle respectively and will forge the formula monaural and fix on the registration arm body. The utility model discloses change former positioning tube connected structure, substitute original welding or other complicated connected modes through giving registration arm one end grafting single -lug structure to directly utilize supporting the monaural and being connected with the holding ring, thereby make product simple structure, production, installation, debugging, maintenance and operateing more make things convenient for, more reliable.