Mining chain conveyors expose drive components to high tensile forces, repeated impact, abrasive material and continuous chain articulation. An incorrectly matched tooth profile can concentrate pressure on the chain crown, interfere with link seating and accelerate wear on both the chain and sprocket.

The Mining Round Link Chain Drive Sprocket uses specially formed teeth and chain pockets rather than a conventional roller-chain sprocket profile. Each pocket receives a round chain link, while the adjacent tooth geometry allows the following link to change orientation as the chain wraps around the sprocket.

The engineering drawing provides parameter symbols but does not provide numerical values.

The standing link is the chain link oriented approximately perpendicular to the sprocket face.

Information Required for Selection

Material and Heat Treatment

The supplied images confirm a metal sprocket but do not identify a specific steel grade, heat-treatment process or hardness. These requirements must be selected according to the chain grade, transmitted torque, impact loading and wear conditions.

The order specification should define:

· Base material grade;

· Forged, cast or machined manufacturing route;

· Overall mechanical properties;

· Tooth and pocket surface-hardening requirements;

· Effective hardened depth;

· Tooth-surface and core hardness;

· Permitted machining allowance;

· Surface finish and corrosion protection.

No material grade or hardness value should be published as a fixed specification until it has been confirmed by the manufacturer.

Manufacturing and Inspection

The tooth profile must follow the approved engineering drawing and match the calibrated chain dimensions. Inspection requirements can include:

· Material certificate review;

· Bore and keyway inspection;

· Pitch-diameter verification;

· Outside-diameter verification;

· Tooth-count inspection;

· Tooth and chain-pocket profile measurement;

· Pocket centre-distance inspection;

· Sprocket width measurement;

· Tooth-root and pocket-radius verification;

· Concentricity and radial-runout inspection;

· Chain fit test using the matching chain or inspection gauge;

· Visual examination of machined surfaces;

· Hardness and hardened-depth verification when specified;

· Magnetic-particle or ultrasonic inspection when required by the order. 

Name: Mining Round Link Chain Drive Sprocket

MOQ: 1 Piece

Package: Carton + Steel Pallet

Manufacturing Standards:
Manufactured according to the approved sprocket drawing, matching-chain dimensions, shaft-interface drawing and confirmed material and heat-treatment specification. Tooth pitch, pocket geometry, bore, keyway, width and profile radii must match the technical order.

Testing Standards:
The inspection plan shall be confirmed with the order. It may include material verification, visual inspection, dimensional measurement, bore and keyway inspection, tooth-profile verification, concentricity and runout measurement, chain-fit testing, hardness testing and nondestructive examination.

Application Standards:
The sprocket interface can be designed for round steel link chains conforming to DIN 22252:2012, which covers round steel link chains used in continuous conveyors and mining extraction equipment. DIN 22252:2012

It can also be matched to high-tensile round-link chains covered by ISO 610:1990 for chain conveyors and coal ploughs. ISO lists this edition as current and confirmed in 2026. ISO 610:1990

Maintenance Standards:
Inspect the sprocket teeth, chain pockets, tooth roots, bore and keyway during scheduled conveyor maintenance. Check for uneven polishing, pocket enlargement, cracking, deformation and abnormal chain seating. Compare chain pitch growth and sprocket-pocket wear because excessive wear in either component can prevent correct engagement. Maintenance intervals and replacement limits must follow the conveyor manufacturer’s operating instructions and the approved site maintenance procedure.

Applications

· Underground mining chain conveyors;

· Armoured face conveyors;

· Stage loaders;

· Scraper conveyor drive systems;

· Coal-plough chain systems;

· Heavy-duty mineral conveying equipment;

· Replacement drives for calibrated round-link chain systems.