About #120H Heavy Duty Roller Chain
#120H heavy duty roller chain meets ANSI B29.1 specifications. Featuring thicker side plates compared to standard #120 chains, all parts undergo precise heat treatment to boost tensile strength, shock resistance and anti-fatigue performance. Solid rollers and bushings greatly reduce friction and elongation under sustained heavy loads, delivering excellent wear resistance and steady power transmission.
Ideal for mining machinery, agricultural conveyors, construction equipment and high-torque industrial drives with frequent impact stress. It is supplied in simplex, duplex and multi-strand versions, with riveted or cottered ends optional. Rigorous production inspection guarantees reliable performance, extended service life and lower long-term maintenance expenses for severe-duty applications.
ANSI #120H Heavy Duty Roller Chains Dimension
Pitch (P): 38.1mm
Roller diameter (d1): 22.23mm
Width between inner plates (b1): 25.22mm
Pin diameter (d2): 11.1mm
Pin length (L): 53.5mm
Pin length (Lc): 57.5mm
Inner plate depth (h2): 35.7mm
Plate thickness (T) : 5.6mm
