Overview — Sprockets for Coil Handling Machinery
From steel service centres in Melbourne to aluminium coil processors in Gladstone, paper mills in the Latrobe Valley, and textile converters in Sydney, coil handling machinery transports, unwinds, slits, and rewinds heavy rolls of metal, paper, and fabric. The chain-and-sprocket drives on mandrels, coil cars, turnstiles, and threading tables must deliver smooth, precise motion to prevent material damage — scratched steel coils, torn paper, or creased fabric mean costly rejects.
A Ever-Power Australia Sprockets Co., Ltd. fabrica coil-handling sprockets with precision-ground teeth and dynamically balanced hubs, delivering the smooth, vibration-free motion that protects high-value coil materials.
Especificações técnicas
| Parâmetro | Padrão | Personalizado |
|---|---|---|
| Passo da corrente | 1/2″ – 1-1/2″ (ANSI 40–120) | Up to 2″ |
| Dentes | 9 – 45 | Up to 72 |
| Praia | Simplex / Duplex | Triplex |
| Eixo | Type A / B / QD / Taper | Flanged / Split |
| Furo | 15 mm – 80 mm | Up to 150 mm |
| Material | C45 / 40Cr / 42CrMo4 | SS 304 / SS 316 |
| Dureza | HRC 40–52 | HRC 58 carburised |
| Superfície | Zinc / Black Oxide / Dacromet | Chrome / Nickel plate |
| PCD | 40 mm – 700 mm | Up to 1100 mm |
| Perfil | ANSI B29.1 / ISO 606 | Precision modified |
| RPM máximo | 1,200 | 2,000 |
| Temp | –20 °C to +100 °C | –40 °C to +200 °C |
| Chaveta | DIN 6885 | Spline / D-bore |
| Tolerância do furo | H7 | H6 |
| TIR | ≤ 0,04 mm | ≤ 0.02 mm |
| Carga de trabalho | Up to 30 kN per strand | 60 kN+ |
| Tração | ≥ 620 MPa | ≥ 1000 MPa |
| Fadiga | ≥ 12,000 hrs | ≥ 25,000 hrs |
| Dynamic Balance | Padrão | G6.3 balanced |
| Embalagem | Anti-rust + poly bag | Custom crate |
Vantagens de desempenho
🔍 Precision Motion
TIR ≤ 0.02 mm and G6.3 dynamic balancing deliver vibration-free coil transport — preventing surface marks on polished steel and aluminium coils.
💪 Heavy-Coil Rated
42CrMo4 alloy sprockets handle coil weights up to 30 tonnes on mandrel drives and coil cars, with shock absorption for sudden starts and stops.
❌ Surface Damage Risk
Budget sprockets with poor TIR cause chain vibration that transfers through rollers to coil surfaces. A single scratch on a premium stainless coil can cost AUD 5,000+ in downgrades.
How Sprockets Work in Coil Handling
▸ Mandrel / uncoiler drive: Sprockets drive the mandrel that grips and rotates the coil for unwinding. Smooth acceleration prevents telescoping.
▸ Coil car traversal: Chain-driven coil cars transport coils between stations. Precise positioning prevents coil-to-equipment contact.
▸ Threading table: Sprocket-driven pinch rollers and table conveyors thread the leading edge of material into the processing line.
▸ Recoiler / rewind: Tension-controlled sprocket drive winds processed material into tight, uniform coils.
▸ Turnstile / upender: Rotates coils from horizontal to vertical (or vice versa) using precision chain-and-sprocket mechanisms.
Compatibilidade
| Equipment | Chain Types | OEMs* |
|---|---|---|
| Mandrel / Uncoiler | ANSI 60–120 | Andritz, SMS, Primetals |
| Coil Car | ANSI 80–120 | Butech Bliss, Coe Press |
| Slitter Line | ANSI 40–80 | Red Bud Industries, Braner |
| Paper Winder | ANSI 40–60, Timing | Voith, Valmet, Andritz |
*Nomes de marcas apenas para fins de referência cruzada. Sem qualquer vínculo.
📊 Coil Weight — Drive Sprocket Specification Matrix
| Coil Weight | Material Type | Min Chain | Sprocket TIR |
|---|---|---|---|
| < 1 t | Paper / Textile | ANSI 40–60 | ≤ 0,04 mm |
| 1–5 t | Aluminium / Thin steel | ANSI 60–80 | ≤ 0.03 mm |
| 5–15 t | Steel coil | ANSI 80–120 Duplex | ≤ 0.02 mm |
| 15–30 t | Heavy steel slab | ANSI 120 Triplex | ≤ 0.02 mm |
Guia de Seleção
- Identify equipment type: mandrel, coil car, slitter, winder, turnstile.
- Determine coil weight range and material (steel, aluminium, paper, fabric).
- Specify required TIR and dynamic balance grade for surface-quality protection.
- Measure bore, keyway, and hub type from existing sprocket or equipment manual.
- Choose material: C45/40Cr for general handling; 42CrMo4 for heavy steel coils; SS for corrosion-sensitive environments.
Contact our coil-handling specialists for precision sprocket recommendations.
Instalação
- Lockout coil-handling line per AS/NZS 4024.
- Release chain tension and remove guards.
- Remove old sprocket; clean shaft; inspect for wear.
- Mount new sprocket; verify keyway engagement; torque to spec.
- Re-route chain with new master link. Set tension per OEM spec.
- Lubricate with clean machine oil (non-drip for coil lines to prevent material contamination).
- Run at slow speed; verify smooth, vibration-free operation.
- Process a test coil; inspect material surface for any marks or defects before full production.
Solução de problemas
Surface marks on coil material
Causa: Sprocket vibration transferring through rollers. Consertar: Replace with precision-ground, dynamically balanced sprocket (TIR ≤ 0.02 mm).
Coil telescoping on mandrel
Causa: Inconsistent mandrel speed from worn drive sprocket. Consertar: Replace sprocket; recalibrate mandrel speed controller.
Coil car mis-positioning
Causa: Chain elongation or tooth wear causing positioning drift. Consertar: Replace chain and sprocket; recalibrate car position sensors.
Paper web breaking at winder
Causa: Torque pulsation from worn winder sprocket teeth. Consertar: Replace sprocket; verify smooth torque delivery at low speed.
Oil contamination on coil surface
Causa: Over-lubrication of chain dripping onto material. Consertar: Switch to non-drip or dry-film lubricant; install drip guards below chain runs.
Estudos de caso
📍 Altona, VIC — Steel Service Centre
BlueScope coil slitting line, 15 t coils. Mandrel drive sprocket causing surface marks on pre-painted steel.
Resultado: G6.3 balanced 42CrMo4 sprocket (TIR ≤ 0.02 mm). Surface defect rate dropped from 1.2% to 0.05%.
“Our reject rate on pre-painted coils dropped 24×. The sprocket precision made the difference.” — Quality Manager
📍 Tomago, NSW — Aluminium Smelter
Aluminium coil line, 5 t coils. Coil car chain elongating, causing mis-positioning and coil edge damage.
Resultado: Hardened duplex sprockets with matched chain. Positioning accuracy improved to ±1 mm. Coil edge damage eliminated.
“Precise coil-car positioning eliminated our biggest source of edge damage.” — Rolling Mill Supervisor
📍 Maryvale, VIC — Paper Mill
Newsprint winder, 2 t rolls. Sprocket torque pulsation causing web breaks at high speed.
Resultado: Precision-ground SS 304 sprocket. Web breaks reduced from 4/shift to < 1/week.
“Web breaks were costing us 30 minutes each time. Now they’re almost gone.” — Winder Operator
📍 Yatala, QLD — Textile Converter
Fabric roll handling line. Sprocket vibration causing crease marks on polyester fabric.
Resultado: Dynamically balanced C45 sprockets. Crease defect rate dropped to zero.
“Crease marks were our top quality complaint. Balanced sprockets solved it completely.” — Line Manager
📍 Whyalla, SA — Heavy Plate Mill
25 t steel slab coil car. Budget sprockets failing every 8 months under shock loads.
Resultado: 42CrMo4 carburised triplex sprockets. 22 months service with zero failures.
“Twenty-five tonne coils demand serious sprockets. These deliver.” — Mill Maintenance Engineer
Perguntas frequentes
Do you supply sprockets for steel slitting lines?
Yes. We manufacture mandrel, recoiler, and coil-car sprockets for all major slitting line OEMs.
Can you dynamically balance sprockets?
Yes. We offer G6.3 dynamic balancing for coil-handling applications where vibration must be minimised.
What TIR is needed for polished aluminium coils?
≤ 0.02 mm TIR is recommended for polished or pre-painted surfaces.
Do you supply to paper mill OEMs?
Yes. We supply to paper machinery builders and maintain stock of common winder sprocket sizes.
Can you supply SS sprockets for wet paper-mill environments?
Yes. SS 304 and 316 sprockets are available for moisture-intensive paper and pulp applications.
What is the lead time for precision-balanced sprockets?
Typically 1–2 weeks for balanced sprockets. Standard precision sprockets ship in 3–5 days.
Do you offer non-drip lubrication solutions?
We supply sprockets compatible with dry-film and PTFE lubricants to eliminate drip contamination.
Can you match OEM Andritz or Voith paper-mill sprockets?
Yes. Provide the OEM part number and we manufacture to exact specification.
Do you supply to textile equipment builders?
Yes. We work with fabric handling and converting equipment manufacturers.
How does your pricing compare to OEM coil-line parts?
Factory-direct pricing typically 30–50% below OEM list. Request a quote.
Related — Precision Chains
Combine com o nosso precision roller chains for vibration-free coil handling drive solutions.
Certificações
✅ ISO 9001:2015 | ✅ ANSI B29.1 / ISO 606 | ✅ DIN 8187/8188 | ✅ EN 10204 3.1 | ✅ RoHS | ✅ CE
Por que escolher a Ever-Power Australia Sprockets Co., Ltd.?
Com 20+ years manufacturing precision sprockets, we serve steel service centres, aluminium processors, paper mills, and textile converters across Australia and 50+ countries. Precision-ground, dynamically balanced, and certified — our sprockets protect your high-value coil materials.
Protect Your Coils — Contact Us
Precision sprockets for premium surfaces.
Ever-Power Australia Sprockets Co., Ltd. supplies coil-handling sprockets that deliver vibration-free motion and protect material quality. Contact us for precision specifications and competitive quotes.
