Scraper Conveyor Chain – Heavy-Duty Drag & Flight Conveying Solutions
A scraper conveyor chain serves as the robust traction core of continuous drag conveying systems. Moving bulk material inside enclosed troughs, high-strength steel or polymer flights sweep hot clinker, abrasive minerals, wet sludge, and fragile grains reliably to discharge points—eliminating the belt tracking and tear risks common in harsh bulk handling.
Backed by 20+ years of OEM manufacturing, ISO 9001/14001 certification, and complete in-house heat treatment, SHINING supplies fully matched conveyor assemblies—including chains, flight attachments, drive sprockets, and wear-resistant liners—delivering 20% cost efficiency without compromising international engineering benchmarks.
Complete Scraper Conveyor Chain Product Portfolio
Standard 15° inclined bolt-on flights. Models: SHP101.6, SHP150-F38, SHP152.4-A~F45F, SHP200-F80/F50.
Integral forged link eyes & double clevis. Single strand (102N-A~260N-A) & Double strand (142N-A2~250D-A2).
Ultra-capacity trunk drag lines. WH132-700, WH157-705, and WHX132D-PT825.5 (combined 800 kN).
Non-stick, gentle handling. Extruded UHMW-PE, high-temp UHMW (to 140°C), PTFE (Teflon), and rigid PA6.
Full-trough span scrapers & impact block chains for severe clinker, ore, and limestone reclaimer booms.
Solid/split sprockets, segmental traction rims, head/tail shafts, wear strips, and custom trough liners.
Engineering Selection: Drop-Forged Chains vs. Welded Double-Strand Assemblies
Drop-Forged Chains: High Impact & Sticky Materials
Forged links (102N to 260N / 142N-A2 to 250D-A2) feature an integral homogeneous attachment eye, eliminating weld fatigue under sudden shock loads. The built-in clearance between double strands absorbs trough misalignment and discharges sticky products cleanly.
Welded Double-Strand: Ultra-Throughput Trunk Lines
Assemblies like the WHX132D-PT825.5 combine two parallel 153.67 mm pitch strands on a common axis, generating 800 kN combined breaking strength. Fitted with full-width UHMW flight plates (rated to 140°C), they deliver continuous high-volume grain conveying without kernel damage.
Key Technical Parameters & Sizing
Table 1: Popular Engineering Scraper Chains (F-Type Flights)
| Chain No. | Pitch P (mm) | Inner Width b1 (mm) | Pin Dia. d2 (mm) | Flight Height S (mm) | Flight Width 2C (mm) | Min. Tensile Q (kN / lbf) | Weight (kg/m) |
|---|---|---|---|---|---|---|---|
| SHP101.6 | 101.6 | 16.5 | 17.46 | 34.0 | 210.0 | 100 / 22,496 | 7.26 |
| SHP150-F38 | 150.0 | 25.0 | 18.50 | 115.0 | 180.0 | 150 / 33,743 | 14.50 |
| SHP152.4-F45 | 152.4 | 32.5 | 22.00 | 64.0 | 326.0 | 260 / 58,489 | 20.40 |
| SHP152.4-F42 | 152.4 | 32.5 | 22.00 | 76.8 | 270.0 | 260 / 58,448 | 20.10 |
| SHP200-F80 | 200.0 | 40.5 | 35.00 | 168.0 | 420.0 | 530 / 119,227 | 50.60 |
| SHP200-F50 | 200.0 | 33.0 | 26.50 | 145.5 | 430.0 | 400 / 89,983 | 28.93 |
Table 2: Drop-Forged Scraper Chains (Single & Double Strand)
| Chain No. | Type | Pitch (mm) | Pin Dia. (mm) | Material Grade | Avg. Breaking Load (kN) | Recommended Duty |
|---|---|---|---|---|---|---|
| 142N-A | Single Strand | 142 | 25 | 20MnCrTi / 42CrMo | 350 | Medium grain & fertilizer drag lines |
| 142H-A | Single Strand | 142 | 25 | 20MnCrTi / 42CrMo | 525 | Heavy mineral & clinker reclaim |
| 142N-A2 | Double Clevis | 142 | 25 | 42CrMo (Quenched) | 550 | Sugar cane, bagasse & palm oil |
| 250D-A2 | Double Clevis | 250 | 35 | 42CrMo Alloy | 1,720 | Extreme torque heavy-duty extraction |
* Non-standard pitches, custom flight widths (UHMW / Steel / PA6), and matching drive sprockets are engineered to your trough drawing.
Material & Heat-Treatment Standards
| Chain Component | Material Selection | Heat-Treatment Process & Engineering Benefit |
|---|---|---|
| Pins | 40Cr, 42CrMo, 40CrNiMo | Induction hardened case with resilient core toughness to prevent shear fracture. |
| Bushes | 20Cr, 20CrNiMo | Deep carburized surface resisting fine abrasive dust and extending pitch-wear life. |
| Link Plates / Forged Links | 40Mn, 42CrMo, 20MnCrTi | Quenched and tempered; optional surface carburizing for high fatigue resistance. |
| Scraper Flights | Mn13, 42CrMo, UHMW (140°C), PTFE | Mn13 work-hardens under impact; UHMW/PTFE provides non-stick, zero-adhesion flow. |
Field-Proven Industrial Performance
Cement & Clinker (Indonesia)
Supplied P250-W620 flow conveyor chains (864 kN) feeding limestone into bucket elevators. In continuous heavy-soot operation for over 5 years without unscheduled downtime.
Oilseed Extraction (North America)
Engineered WHX132D-PT825.5 double-strand chains (800 kN) with 825.5 mm high-temperature UHMW scraper plates rated to 140°C, handling hot canola meal straight from dryers.
Sugar Mill & Palm Oil (Southeast Asia)
Supplied 142N-A2 forged chains with integrated double-clevis scrapers. Discharges sticky fibrous bagasse and palm kernel cakes cleanly while tolerating sudden feed-choke shocks.
Frequently Asked Questions (FAQ)
Q1: When should I choose a scraper conveyor over a belt conveyor?
Q2: What is the main difference between drop-forged and welded scraper chains?
Q3: Can SHINING reverse-engineer and supply drop-in replacements for imported chains?
Q4: What polymer flight options are available for food or hot chemical service?
Q5: What are your standard Minimum Order Quantity (MOQ) and production lead times?
Ready to Upgrade or Replace Your Scraper Conveyor System?
Send your trough cross-section, chain pitch, or physical sample drawings to our engineering team. We deliver 2D/3D approval drawings and competitive factory pricing within 48 hours.
