Purpose: Used for connecting the middle groove of fully mechanized mining.
Features: Simple structure, easy installation, and reliable connection.
Material: Made of high alloy steel, forged and formed, quenched and tempered, commonly used materials include 40Mn2, 40CrNiMo or 42CrNiMo, and other materials.
Mechanical performance: The dumbbell connection has a strength of up to 3000kn, making it more reliable compared to long ring connections.
Supporting quantity: Generally, the fully mechanized scraper machine is equipped with 200-300 dumbbell pins.
Scraper series: 2S06-1A, 7SD02-1 10S. 54S, 65S-06, 66S-20, 73SA-01, 86SF-01, 90S, 91S 99S-01, 101S, 107S, 111S, 113S11208-1, 125S012006-01, 126S 128S, 130S, 131S, 134S, 150S, 153S01, 159S, 1GL, 4GL01-1, 4GL04-1, 5GL02-2, 5GL03-2, 7GL3-1, 11GL3-1, 17GL3-1, 20G , 43GL3-1, 3TY-01, 3TY-05/15GL，3TY-47, 320/17B, Q/ZM164-1988, . Waiting and matching crossbeam bolts. E-bolt series: 54S, 90S, 90SB, 90SH, 11SJB01-5 (U-shaped), 113S, 3TY-02, 3TY-06, 3TY-48, 4GL04-1 (U-shaped), 5GL01-2, 15GL01-2, 16GL01-2, 17G (U-shaped), 21GL04-2, 36GL01-2, 43G, Northwest (M24X120), 520E, Wait. Dumbbell Pin Series: 11SJB01-2 66S, 107SA, 111S, 134S, 150S, 154S, 171S, 182S00/01-1, 196S02/01-1, 3LX01-1, 3LX02-2, 3LX06-1, 3LX09-1, 33G-1, 2LX01-1, 4LX01-1, 4LX02-1, 4LX03-1, 5LX01-1, 5LX02-1, 5LX03-1, 8LX01-1. DYL-100, DYL-180, DYL-220, Wait. Beam series: 11GL3-1, 10S, 107S, 4GL01-2, 5GL02-2A, 5GL03-1, 5GL03-2, 5GL10-1, 15GL3-2, 25GL01-2, 30GL01-3, 32GL01-2, 35SJ06-2, BGA00-11，111S， 630/150, etc. Production and sales of connecting ring series: 18 * 64, 22 * 86, 26 * 92, 30 * 108, 34 * 126, 38 * 137 and imported 48 * 152 connecting ring.
