Description
Stainless Steel Ladder Sprockets — Corrosion-Resistant Transmission for Hygienic & Chemical Conveyor Systems
Ever-power Australia Driven Sprocket Co., Ltd. manufactures stainless steel ladder sprockets specifically for conveyor environments where corrosion, chemical exposure and hygiene compliance drive component selection. Available in SS304 and SS316/316L austenitic grades, these sprockets maintain surface passivation through daily CIP wash-down cycles, caustic and acid exposure, and continuous high-humidity operation — conditions that destroy standard carbon steel within weeks.
We supply food processing plants, pharmaceutical manufacturers, seafood facilities, dairy operations, chemical dosing lines, marine platform conveyors and water-treatment installations across Australia. Every sprocket is machined from mill-certified bar stock under our ISO 9001 : 2015 quality management system, with full material traceability from raw billet to finished part.
1. Especificaciones técnicas
| Parámetro | SS304 Grade | SS316/316L Grade |
|---|---|---|
| Material Standard | ASTM A276 / EN 10088-3 | ASTM A276 / EN 10088-3 |
| Chromium Content | 18% | 16-18% + 2% Mo |
| Hardness (Annealed) | HRC 20-25 | HRC 20-25 |
| Max Continuous Temp | 120°C | 200°C |
| Rango de recuento de dientes | 8 – 95 teeth | 8 – 95 teeth |
| Rango de tono | 6.35 mm – 50.8 mm | 6.35 mm – 50.8 mm |
| Rango de perforación | 10 mm – 120 mm | 10 mm – 120 mm |
| Surface Finish | Electropolish Ra < 0.8 um | Electropolish Ra < 0.6 um |
| Hub Style | Type A / B / C / Split | Type A / B / C / Split |
| Compliance | FDA 21 CFR | FDA, REACH, EU 1935/2004 |
2. Características del producto
◆ Superior Corrosion Resistance
Austenitic stainless steel maintains a self-healing chromium oxide passivation layer that resists pitting, crevice corrosion and stress-corrosion cracking in chloride, acid and alkaline media. SS316L adds molybdenum for enhanced resistance in marine and chemical environments.
◆ Hygienic Electropolished Surface
Tooth flanks electropolished to Ra less than 0.8 um (SS304) or Ra less than 0.6 um (SS316L) eliminate micro-crevices where bacteria colonise. Smooth surfaces shed product residue during CIP cycles without manual scrubbing.
◆ FDA & REACH Compliant
All stainless steel ladder sprockets meet FDA 21 CFR 174-178 food-contact requirements. SS316L additionally complies with REACH and EU 1935/2004 for pharmaceutical and food-grade conveying.
◆ Thermal Stability
SS304 operates continuously to 120°C; SS316L to 200°C without loss of mechanical properties or dimensional distortion — critical for oven discharge, retort and sterilisation conveyors.
◆ Extended Chain Life
Smooth, corrosion-free tooth surfaces reduce abrasive friction on chain plates and rollers. Field data from Australian food processors shows 2-3x chain replacement interval extension versus mild steel sprockets.
◆ CNC Precision Machining
5-axis CNC machining delivers pitch accuracy within 0.02 mm cumulative over the full sprocket circumference. Bores machined to H7 tolerance for reliable shaft fit.
3. Información de compatibilidad
Estándares de la cadena: Compatible with ANSI 25 through ANSI 240, ISO 606 / DIN 8187 simplex, duplex and triplex roller chains, as well as extended-pin and hollow-pin ladder chain configurations.
Rango de diámetro del eje: 10 mm to 120 mm. Keyways machined to AS 2062 / DIN 6885. Taper-lock and QD bush adaptors available on request.
Compatibilidad de acoplamiento: Direct-mount compatible with standard jaw couplings, chain couplings and grid couplings used in food-grade conveyor drive assemblies.
4. Guía de selección
By Chain Pitch: For standard food-grade belt conveyors running 12.7 mm (ANSI 40) or 15.875 mm (ANSI 50) pitch chains, SS304 is the cost-effective default. For chemical wash lines or marine environments, specify SS316L.
By Application: Bakery oven discharge, IQF spiral freezers, dairy pasteurisation lines and beverage bottling — use SS304. Seafood brine tanks, pharmaceutical CIP lines, chlorinated water treatment and offshore platform conveyors — use SS316L.
By Load: Light to medium conveyor loads up to 500 kg/m. For heavy-load applications, consider our carbon steel heavy-duty series.
5. Material y proceso de fabricación
Raw material: mill-certified ASTM A276 austenitic stainless bar stock. Blanks are saw-cut, then CNC turned and milled on 5-axis machining centres. Tooth profiles are finish-cut to AGMA/ISO accuracy. Post-machining, sprockets undergo passivation in citric acid solution per ASTM A967, followed by electropolishing to achieve the specified Ra surface finish. No heat treatment is applied — austenitic grades are used in the solution-annealed condition (HRC 20-25) to preserve maximum corrosion resistance.
6. Escenarios de aplicación
🍞Bakery & Oven Conveyors
SS304 ladder sprockets drive mesh-belt and modular-belt conveyors through tunnel ovens, proofers and cooling lines. Electropolished surfaces prevent dough adhesion and resist daily alkaline wash-down.
❄IQF & Blast Freezer Lines
SS316L sprockets withstand -40°C to +85°C thermal cycling in spiral freezers followed by hot caustic CIP. Zero corrosion eliminates product contamination risk.
⚛Pharmaceutical & Cleanroom
316L grade with Ra < 0.6 um electropolish for blister-pack conveyors, lyophiliser loading systems and aseptic fill-finish transfer lines. Gamma and e-beam sterilisation resistant.
🌊Marine & Chemical Processing
Molybdenum-enriched SS316L resists chloride pitting on offshore platform conveyors, desalination systems and chemical dosing transfer lines operating at pH 1-13.
7. Testimonios de clientes
★★★★★ — Murray-Darling Food Processor, Australia
We replaced mild steel sprockets with Ever-power SS316L on our IQF spiral freezer. Zero corrosion events recorded over 18 months of continuous 3-shift production. HACCP audit passed without issue.
★★★★★ — Seafood Processor, New Zealand
The electropolished finish eliminated bacterial harbourage on our brine-line conveyors. Cleaning time reduced by 40% per shift. Excellent surface quality.
★★★★★ — Pharmaceutical Manufacturer, Germany
SS316L sprockets with full material traceability and FDA declarations. Documentation was complete and accurate — exactly what our QA team required for EU GMP compliance.
★★★★ — Dairy Cooperative, USA
Running SS304 on our pasteurisation line conveyors. Good corrosion resistance, accurate bore dimensions, and the price point is competitive against local US suppliers.
★★★★★ — Chemical Plant, Japan
316L grade performing well in our acid-wash conveyor. No pitting after 14 months of pH 2 exposure. We have reordered for a second production line.
8. Preguntas frecuentes
9. Accesorios recomendados
🔗Stainless Steel Transmission Chains
SS304 and SS316 roller chains in ANSI/ISO standard pitches. Matched material eliminates galvanic corrosion between chain and sprocket.
⚙Stainless Steel Bushings
Taper-lock and QD bushings in 304/316 stainless for corrosion-free shaft mounting in wash-down environments.
⚪Food-Grade Bearings
Sealed stainless steel bearing units (IP69K rated) for hygienic conveyor applications. Resist high-pressure wash-down.
10. Guía de instalación
Step 1 — Shaft Preparation: Clean shaft journal, verify diameter within tolerance. Remove burrs from keyway edges.
Step 2 — Sprocket Mounting: Slide sprocket onto shaft. Align with mating sprocket using a straight edge or laser alignment tool. Ensure axial alignment within 0.5 mm.
Step 3 — Secure Hub: Insert key, tighten set screws or taper-lock bush to manufacturer torque specification. Do not over-tighten — stainless is susceptible to galling on set screws.
Step 4 — Chain Tensioning: Install chain, adjust tension to 2-4% sag on the slack side at mid-span. Re-check after 24 hours of operation.
Step 5 — Final Check: Rotate drive by hand. Verify chain tracks centrally on sprocket teeth with no lateral offset. Confirm all guards reinstalled before powering on.
11. Mantenimiento e inspección
Lubricación: In food-grade applications, sprockets typically operate dry. Where lubrication is permitted, apply food-safe H1 lubricant every 500 operating hours.
Inspección de desgaste: Measure tooth thickness at pitch circle monthly. Replace sprocket when tooth width has reduced by 1.5 mm or when chain seating depth exceeds 2.0 mm beyond nominal.
Surface Condition: Inspect for localised pitting, discolouration or crevice corrosion at hub/shaft interface quarterly. Any visible pitting warrants immediate replacement.
Replacement Interval: Typical service life in food-processing wash-down: 10,000-15,000 hours for SS304; 15,000-20,000+ hours for SS316L depending on chemical exposure severity.
12. Certificaciones y Normas
We manufacture all stainless steel ladder sprockets in compliance with ISO 606 (roller chain sprocket dimensions), ANSI B29.1 (precision roller chains), DIN 8187/8188 (European chain standards) and AS 2050 (Australian chain and sprocket standard). Our facility holds ISO 9001 : 2015 certification, independently audited by SGS and TUV. Material is verified by in-house spectral analysis against ASTM A276 / EN 10088-3 specifications.
13. ¿Por qué elegir Everpower?
We are Ever-power Australia Driven Sprocket Co., Ltd. — a specialist ladder sprocket manufacturer with over 20 years of OEM supply experience. We focus exclusively on ladder sprockets, not general machined parts. This single-product focus means tighter process control, deeper material expertise and faster turnaround. We operate 5-axis CNC machining centres, wire EDM, in-house heat treatment and a fully equipped metrology lab with CMM capability. We have supplied over 15,000 SKUs to 200+ active accounts across Australia, New Zealand and Southeast Asia, maintaining a 98.4% on-time dispatch record.
14. Solicita un presupuesto hoy mismo.
Tell us your chain pitch, tooth count, bore size and operating environment. Our engineers will recommend the optimal stainless steel grade and surface finish — with a formal quotation — typically within one business day.
