 
     
Requirement for drum shaft extension: drawing No. with “-S” as postfix refers to double shaft extension (e.g. 100A108Y (Z)-S); drawing No. without “-S” as postfix refers to single shaft extension.
	Requirement for drum surface: all are cast rubber surface. Drawing No. with “Y” as postfix refers to right-direction herringbone, with “Z” as postfix refers to left-direction herringbone, with “YZ” as postfix refers to diamond shape (omissible).
	
	
	
	
	
	
	 
	II. Bend drum
	
	Requirement for drum surface: drawing No. with “G” as postfix refers to smooth face drum; drawing No. without “G” as postfix refers to rubber face drum.
	
	
	
	
	
	
	
	
	
	
	III. Carrying idler
	3.1 35° trough idler
	
	
	
	3.2 45° trough idler
	
	
	
	3.3 35° forward-tilt trough idler
	
	
	
	3.4 45° forward-tilt trough idler
	
	
	
	3.5 10° transition idler
	
	
	
	3.6 20° transition idler
	
	
	
	3.7 30° transition idler
	
	
	
	3.8 10°, ±5°transition idler with adjustable trough angle
	
	
	
	3.9 20°, ±5°transition idler with adjustable trough angle
	
	
	
	3.10 35° buffer idler
	
	
	
	3.11 45° buffer idler
	
	
	
	3.12 Upper parallel idler
	 
	
	
	
	3.14 Upper friction self-aligning idler
	
	
	
	3.15 Upper taper self-aligning idler
	
	
	
	3.16 Upper friction flat self-aligning idler
	
	
	
	 
	IV. Return idler
	
	4.1 Lower parallel idler
	 
	
	

	4.2 V-shaped lower idler
	
	
	
	4.3 V-shaped forward-tilt lower idler
	
	
	
	4.4. Parallel comb idler
	 
	
	
	
	
	4.5 V-shaped comb idler
	
	
	
	4.6 Inversed V-shaped idler
	

	
	
	4.7 Screw idler
	
	
	
	4.8 Lower friction self-aligning idler
	
	
	
	4.9 Lower taper self-aligning idler
	
	
	 
	V. Roller of idler
	
	5.1 General-type roller
	
	
	
	
	5.2 Buffer roller
	
	
	
	
	5.3 Comb roller
	
	
	
	
	5.4 Screw roller
	
	