Drum gear couplings can be roughly divided into: GⅠCL, GⅠCLZ type—drum gear coupling (JB/T 8845.3 — 2001) X_GⅡCL drum gear coupling GⅡCL, GⅡCLZ type— Drum gear coupling (JB/T 8845.2-2001) GCLD type-drum gear coupling (JB/T 8845.1-2001) WGP type-drum gear coupling with brake disc (JB/ T7001-93) WGC type-vertical installation drum gear coupling (JB/T7002-93) WGZ type-drum gear coupling with brake wheel (JB/T7003-93) WGT type-connecting intermediate sleeve Drum gear coupling (JB/T7004-93) TGL type-nylon inner gear drum gear coupling (JB/T5514-91) WGJ type-connecting intermediate shaft drum gear coupling (JB /T8821—1998) NGCL type—with brake wheel type (JB/ZQ4644—97) NGCLZ type—with brake wheel type (JB/ZQ4645—97) WG type—with brake wheel type (JB/ZQ4186—97) CL Type Gear Coupling (JB/ZQ 4218-86) CLZ Type Gear Coupling (JB/ZQ 4218-86) NL Type—Nylon Internal Gear Ring Drum Gear Coupling (DB 3202-87)