66S-10 Scraper Dumbbell Pin 

Technical parameters: total length 485mm, inner width 230mm, weight about 13KG. 
Uses: Used for the connection of the middle slot of fully mechanized mining. 
Features: simple structure, easy installation and reliable connection. 
Material: Use high alloy grade, forging and forming, tempering and heat treatment to ensure its strength, commonly used materials are 45 steel, 40Cr and other materials are welcome to order. 
Mechanical properties: Dumbbell link strength up to 3000kn, compared with long ring connection, the connection is more reliable. 
Supporting quantity: The general comprehensive mining scraper is equipped with 200-300 dumbbell pins.