Sprocket Wheel for Traveling Grate Coal Boiler – Heavy‑Duty Power Transmission
Designed specifically for the harsh environment of traveling grate coal boilers, our sprocket wheel for traveling grate coal boiler delivers reliable torque transmission under high‑temperature, abrasive conditions. Engineered from heat‑treated alloy steel and equipped with precision‑cut teeth, the unit maintains dimensional stability even after prolonged exposure to ash, slag and rapid temperature cycles. Whether you are upgrading an existing plant or specifying a new boiler line, this component ensures continuous feed movement, reduces downtime, and protects downstream drive mechanisms.
Technical Specifications (customizable per order)
| Parameter | Standard Range | Unit |
|---|---|---|
| Module (Pitch) | 12.7 – 31.8 | mm |
| Number of Teeth | 15 – 40 | pcs |
| Bore Diameter | 30 – 200 | mm |
| Material | Alloy Steel 35CrMo, heat‑treated to 55‑60 HRC | – |
| Operating Temperature | -20 to +650 | °C |
| Surface Hardness | ≥ 55 HRC | – |
Why Our Sprocket Wheel Stands Out
- Load Capacity: Engineered to transmit torque up to 250 kNm, matching the high‑power demands of large‑scale coal‑fired boilers.
- Extended Duty Cycle: Designed for continuous operation 24 × 7 × 365, with minimal wear even under cyclic thermal shock.
- Corrosion‑Resistant Treatment: Surface nitriding and phosphate coating protect against slag‑induced oxidation.
- Dimensional Accuracy: CNC‑cut teeth ensure <1 mm cumulative error, reducing backlash and vibration.
- OEM Flexibility: We produce to your exact module, bore size, and hub pattern, supporting both standard and bespoke configurations.
Application Scenarios
The traveling grate mechanism is the heart of any coal‑fired boiler, moving fuel from the feed chute through the combustion zone. Our sprocket wheel is deployed in:
- Large utility power stations (≥ 300 MW) where belt‑driven grates operate under heavy ash loading.
- Industrial heating plants that use low‑grade coal and require robust feed control.
- Retrofit projects where existing sprockets have suffered tooth wear or heat cracking.
- Export‑oriented manufacturers needing compliance with IEC 60034‑1 and ISO 9001 quality systems.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for custom‑size sprockets?
Our standard MOQ is 50 pcs per design. For larger projects we can reduce the quantity to 20 pcs, subject to a modest tooling surcharge.
Can the tooth profile be modified for a specific chain type?
Absolutely. We support ISO, ANSI, and DIN chain standards. Provide the chain code, and our engineering team will adjust the pitch, profile angle, and add any necessary groove relief.
What is the typical lead time after design approval?
Standard production runs ship within 15‑25 days. For special heat‑treatment or surface‑coating requirements, lead time extends to 30‑45 days, depending on order volume.
Do you offer warranty or after‑sales support?
Yes. All sprocket wheels carry a 12‑month warranty against material defects and workmanship. Our technical service team is available for installation guidance and performance verification.