Slitting separators

 

  • Slitting Separators (also called separator discs or separator wheels) are key components installed on both sides of the top and bottom knife shafts in a steel coil slitting line. Their primary function is to support, guide, and separate the slit strips to prevent contact, tangling, or scratching during recoiling. They ensure straight edges and high product quality.

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Slitting Separators (also called separator discs or separator wheels) are key components installed on both sides of the top and bottom knife shafts in a steel coil slitting line. Their primary function is to support, guide, and separate the slit strips to prevent contact, tangling, or scratching during recoiling. They ensure straight edges and high product quality.
 
Item Description
Product Name Slitting Separator / Separator Disc / Separator Wheel
Material Options Tool steel (e.g., Cr12MoV, D2), H13, alloy steel, stainless steel, nylon, polyurethane-coated, etc.
Typical Hardness HRC 50–60 (depending on material and application)
Diameter Range φ100 mm to φ300 mm (customized based on shaft size and line specs)
Thickness Range 5 mm to 30 mm (customized based on slit pitch)
Surface Treatment Mirror polish, nitriding, plating, rubber coating
Types Available Solid separator wheels, rubber-coated wheels, wheels with bearings, tapered wheels
Solicitud Steel coil slitting lines (cold-rolled, hot-rolled, stainless steel, aluminum, etc.)

📊 Technical Data Sheet (Example)

Parameter Value (Sample)
Outer Diameter 200 mm
Inner Bore Diameter 75 mm
Thickness 10 mm
Material Cr12MoV + Nitrided Surface
Hardness HRC 58 ± 2
Surface Roughness Ra ≤ 0.2 μm
Concentricity Tolerance ≤ 0.01 mm
Coating (Optional) Polyurethane, Rubber (60–90 Shore A)
  •  

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🎯 Main Purposes of Slitting Separators

Function Category Description
1. Separation Separates the slit strips from each other to prevent overlapping, tangling, or rubbing during line operation or recoiling.
2. Guiding Helps guide the strips along an accurate path, ensuring neat edges and proper alignment during recoiling.
3. Support Provides physical support for thin or soft materials (e.g., stainless steel, aluminum), preventing sagging or vibration.
4. Surface Protection Rubber-coated separators prevent scratches, dents, or marks on the edges of the metal strips, improving surface quality.
5. Improved Product Quality Proper use of separators helps maintain consistent strip width and tight, uniform coils, increasing product yield.

🛠️ Usage & Maintenance Guidelines

✅ Usage Guidelines

  1. Correct Installation Orientation: Ensure the separator disc is perpendicular to the knife and fits tightly on the shaft with no play.

  2. Proper Spacing: Match separator thickness to slit strip width and spacing requirements to prevent entanglement.

  3. Avoid Overloading: Excessive load may damage the separator or misalign the knives, reducing slitting quality.

  4. Prevent Contamination: Keep the line clean; avoid metal shavings, oil, or debris that can damage the separator surface.

🧽 Maintenance Tips

  • Regular Wear Inspection: Especially for coated separators—replace aging rubber in time.

  • Clean Shaft and Separator Surfaces: Prevent rust or jamming.

  • Store in Dry Conditions: Avoid moisture to prevent rusting of metal components.

  • Track Service Life and Replacement: Helps with production planning and quality assurance.

 

    • Read More About top slitter knives
    • Read More About rotary slitter knives
      •  

  • 📎 Additional Recommendations

    • For stainless steel or aluminum (scratch-sensitive materials), rubber-coated separators are recommended.

    • For heavy-duty or high-frequency use, choose nitrided high-hardness steel.

    • Custom designs available: non-standard sizes, special edges (e.g., tapered, anti-slip grooves) can be tailored to specific process requirements.

  1. Enter Section Equipments
  2.  
  3. 1. Coil car and Storage
  4. 2.Single And Double Heads Un-coiler & Hydraulic And Pneumatic Un-coiler
  5. 3.Peeler and hold down roll arm
  6. 4.Flattening Machine
  7. 5.Automatic and Semi Auto Shearer & Butt Welder
  8. 6.Vertical Cage Accumulator​ & Horizontal Loop Accumulator & Landing Horizontal Spiral Loop Accumulator

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Finishing Section
 
  1.  
  2. 1. Máquina de corrientes de Foucault
  3. 2. Máquina de recocido de costura
  4. 3. Máquina alisadora
  5. 4. Máquina de biselado y refrentado de extremos
  6. 5. Máquina de prueba hidrostática
  7. 6. Máquina roscadora
  8. 7. Máquina de pintura y óleo
  9. 8. Máquina automática para embalar y empaquetar paquetes

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Spare Parts and Consumble Parts
 
  1.  
  2. 1. Rollers, Moulds, Dies, D2,D3 material to choose
  3. 2. Ferrita, Impeder, Tubo de fibra de vidrio
  4. 3. Hojas de sierra HSS, hojas de sierra TCT, hojas de sierra de fricción
  5. 4. Insertos para quitar rebabas de diámetro exterior e insertos para quitar rebabas de diámetro interior
  6. 5. Bobina de inducción para soldador de alta frecuencia y otras piezas de repuesto para soldador de alta frecuencia
  7. 6. Tubo de cobre para bobina de inducción, tubo de PTFE para bobina de inducción
  8. 7. MOSFET, placas
  9. 8. Máquina flejadora de tubos de acero
  10. 9. Máquina pulverizadora de zinc, alambre de zinc, pistola pulverizadora de zinc

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Certificate
 

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Nuestro servicio
 
  1. ¿Por qué elegirnos?
  2. 1.Leading Technology, Reliable Quality, Excellent Service! ¡Diseño optimizado, selección de materiales de alta calidad!  ¡Garantía de proceso de tratamiento térmico!

  3. 2.Spiral bevel gear, drum gear coupling and carburization. Temple de dientes de engranajes. Sistema accionado estable, eficiente y portátil con menor ruido.

  4. 3.High precision wear resisting and Long life of toolings. Todos los tornos y ranuradores de las máquinas están posicionados y fresados ​​mediante CNC.

  5. 4.Quality department make sure the material of the raw materials quality, and ensure the machine running perfect.

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Servicio postventa

  1. 1.Machine test running videos will supply to customer before shipment.
  2. 2.Online techenical support WHOLE LIFT FREE.
  3. 3.Professional engineers team to install the machine,  train your employee well.
  4. 4.One year warranty and life-long technical support.
  5. 5,24 horas para la respuesta del ingeniero.
  6. 6. Su relación comercial con nosotros será confidencial para cualquier tercero.
  7. 7.  We welcome customers to visit our factory anytime.

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Slitting Knives and Slitting Spacers FAQs

What is a Slitting Separator?

A slitting separator is a guiding and isolating component installed on both sides of the top and bottom slitter shafts. It is positioned between the slit strips to prevent them from touching, tangling, or scratching each other during line operation or recoiling.

What’s the difference between a Separator and a Spacer?

A Separator is used to physically separate and support the slit strips and guide them during operation. A Spacer is used to accurately set the spacing between knives to ensure the correct strip width.

Where are separators installed, and how is spacing set?

Separators are mounted on the shafts on both sides of the knives and placed between the finished slit strips. Spacing is based on strip width, knife arrangement, and rewinding tension, typically leaving a 0.2–1 mm clearance between strips.

How should separators be maintained?

Regularly clean dust, oil, or metal debris from the surface Store in a dry environment to prevent rust Check rubber coating for aging, hardening, or cracks and replace as needed Inspect bearings (if equipped) for smooth rotation

Can separators be customized?

Yes. You can customize outer diameter, inner bore, thickness, and coating material based on shaft size, strip width, material type, and specific line requirements.

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