Chain sprocket wheel

straight-toothedshaftedconveyor chain

Product Overview
The TOPONE Chain Mining round-link chain drive sprocket transfers torque from the drive shaft to a calibrated round steel link chain in heavy-duty mining conveyor systems. Alternating tooth and pocket geometry supports changing orientations of successive links, while contoured tooth roots and chain pockets distribute contact across the link surface.

Introduction
Mining conveyor drives face high tensile loads, impact, abrasion and continuous articulation. Incorrect sprocket tooth profile concentrates pressure, impedes link seating and accelerates wear. This sprocket uses formed teeth and pockets to locate each round link and allow rotation of the following link as the chain wraps around the wheel.

Parameter (engineering drawing symbols)

• B — Section position
• D₀ — Sprocket pitch diameter
• Dₑ — Sprocket outside diameter
• D₁ — Standing-link circle diameter
• l — Standing-link groove width
• R₁ — Tooth-profile arc radius
• R₂ — Tooth-root arc radius
• R₃ — Chain-pocket plane arc radius
• R₄ — Standing-link groove arc radius
• R₅ — Short-tooth root arc radius
• H — Distance from sprocket centre to the chain-pocket bottom plane
• L — Chain-pocket length
• W — Short-tooth thickness
• A — Chain-pocket centre distance
• θ — Tooth and pocket angular position

Information Required for Selection

• Chain type — Mining round steel link chain
• Chain dimensions — Nominal diameter × pitch
• Link dimensions — Inside width, outside width and link length
• Chain standard — National or international standard required
• Chain condition — New chain or existing worn chain
• Number of teeth — Confirmed tooth count
• Bore — Finished shaft-bore diameter
• Keyway — Width, depth and position
• Sprocket width — Required axial width
• Drive information — Power, torque, speed and rotation direction
• Conveyor arrangement — Single-chain, centre-chain or multi-chain configuration
• Operating conditions — Material handled, impact, abrasion and environment
• Reference materials — Chain sample, existing sprocket or approved drawing

Material and Heat Treatment

• Base material grade to be defined in the order specification.
• Manufacturing route: forged, cast or machined as specified.
• Overall mechanical properties to be confirmed per order.
• Tooth and pocket surface-hardening requirements to be specified.
• Effective hardened depth and tooth-surface/core hardness to be defined.
• Permitted machining allowance to be agreed.
• Surface finish and corrosion protection to be specified.
• No material grade or hardness is published until confirmed with the manufacturer.

Manufacturing and Inspection

• Tooth profile must follow the approved engineering drawing and match the calibrated chain dimensions.
• Possible inspections: material certificate review, bore and keyway inspection, pitch-diameter and 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 matching chain or inspection gauge, visual examination of machined surfaces.
• Hardness and hardened-depth verification when specified; magnetic-particle or ultrasonic tests when required.

Standards and Ordering

• Name: Mining Round Link Chain Drive Sprocket
• Brand: TOPONE Chain
• Model reference: Mining Round Link Chain Drive Sprocket
• MOQ: 1 Piece
• Package: Carton + Steel Pallet
• Manufacturing standards: Produced to approved sprocket drawing, matching chain dimensions and confirmed material/heat-treatment specifications. Tooth pitch, pocket geometry, bore, keyway, width and profile radii must match the technical order.
• Testing standards: Inspection plan confirmed with order; may include material verification, dimensional measurement, chain-fit testing, hardness testing and nondestructive examination.
• Application standards: Interface can be designed for round steel link chains to standards such as DIN 22252:2012 and ISO 610:1990 (to be confirmed).
• Maintenance guidance: Inspect sprocket teeth, chain pockets, tooth roots, bore and keyway during scheduled maintenance; monitor pocket enlargement, cracking, deformation and chain seating; compare chain pitch growth and sprocket-pocket wear.

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

Technical specifications

• Commercial name: Mining Round Link Chain Drive Sprocket
• Brand: TOPONE Chain
• Model reference: Mining Round Link Chain Drive Sprocket
• MOQ: 1 Piece
• Package: Carton + Steel Pallet
• Material grade, heat treatment, hardness, tooth count, bore size, keyway dimensions, pitch diameter, outside diameter, sprocket width and other numerical parameters: to be confirmed with purchaser and specified on the order.
• Designed to match calibrated mining round steel link chain dimensions and the confirmed shaft/drive interface.