Submerged Overhanging Idler (SOI)
Submerged overhanging idlers (inner guide wheels) for submerged scraper chain conveyors in thermal power plants.
- 8 standard sizes
- Made to your drawing
Dimensions
Find your size
Pick a size to see its dimensions, then request a quote for exactly that size.
Selected — SOI
19 · 400
- p
- 24
- q
- 83
Size not listed? We manufacture to your drawing or sample —send us your requirement.
View all 8 sizes (full table)
| PCD (mm) | Chain d (mm) | p | q |
|---|---|---|---|
| 400 | 19 | 24 | 83 |
| 400 | 22 | 27 | 92 |
| 400 | 26 | 32 | 107 |
| 566 | 30 | 36 | 113 |
| 560 | 34 | 42 | 127 |
| 566 | 36 | 42 | 136 |
| 650 | 42 | 50 | 155 |
| 511 | 30 | 36 | 113 |
CMECH offers precision-engineered Submerged Overhanging Idler Wheels — also referred to as Inner Guide Wheels — specifically developed for bottom ash handling systems in submerged scraper chain conveyors (SSCCs). These wheels are a critical part of ash removal systems, operating in submerged and high-abrasion environments at the tail end of thermal power plant boilers.
Typical Application
- Submerged Scraper Conveyors (SSCCs)
- Bottom ash dewatering and discharge systems
- Wet chain conveyors in boiler ash zones
- Reversible and unidirectional bottom ash conveyors
Design & Construction
Each wheel is designed to operate in submerged or semi-submerged conditions with continuous exposure to:
- Abrasive bottom ash
- Water/moisture cycles
- Thermal gradients and high mechanical loads
CMECH wheels are provided with
- Integrated cantilevered shaft mountings for direct frame fitment
- Flanged outer ring design to guide the scraper chain movement within the trough
- Stress-relieved cast or forged alloy steel bodies, for long-life performance in corrosive-slurry environment
Size Range & Variants
- Available in PCD sizes from 400 mm to 650 mm
- Shaft diameters from 19 mm to 42 mm, depending on load
- Idler thickness and spacing as per OEM standards (Ashtech, Macawber, Clyde Bergemann, etc.)
- Lubrication options: Sealed-for-life or grease-packed as per site demand
Why Choose CMECH Submerged Idlers?
- Precision Fit for submerged chain tracks — avoids misalignment
- Hardened bearing surface zones for increased wear resistance
- Custom-built with flange & shaft assembly for direct integration
- No jamming under thermal expansion due to guided axial tolerance
- Field-tested in NTPC, Tata Power, JSW, and other thermal utility setups
Optional Enhancements
- 316L stainless steel variants for higher corrosion resistance
- Surface coatings for enhanced ash-slurry performance
- Non-metallic wheel options for isolated applications
Let CMECH Support Your Bottom Ash Systems
Submerged Overhanging Idler (SOI)
Other Round Link Chain Conveyor components
Round Link Chain
32 sizesPrecision-engineered round link chains for bucket elevators and chain conveyors in abrasive, high-load and high-temperature duty — built to DIN 764, DIN 766 and customer-specific configurations.
View sizes & details
Sprocket & Shaft Assembly
55 sizesComplete, ready-to-install drive and tail sprocket assemblies for chain bucket elevators and chain conveyors — machined, balanced and test-mounted so your crew can fit, torque and run.
View sizes & details
Conveyor Chain Attachments
46 sizesConnectors, scraper-bar attachments, shackles and chain locks matched to round link conveyor chains.
View sizes & details
Scraper Bars — Bottom Ash Conveyor
Custom-fabricated scraper bars for submerged bottom ash conveyors in thermal power plants — engineered fabrication, cladding and forging for wear resistance under the harshest ash handling.
View details
Chain Wheels
69 sizesChain wheels for heavy-duty chain conveyors in cement kilns, clinker transport, steel scrap feeders, ash handling and raw meal systems.
View sizes & detailsNeed submerged overhanging idler (soi) for your plant?
Send us your drawing or requirement — we respond within one business day.