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.

Product Details

Contact Now

Product Details

Video

 

Product Description
 
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
Application 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)
  •  

      • Read More About slitter blade
      • Read More About rotary slitter knives

🎯 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

Read More About impeder rod

Read More About ferrite impeder rods

Finishing Section
 
  1.  
  2. 1. Eddy current machine
  3. 2. Seam annealing machine
  4. 3. Straightener machine
  5. 4. Chamfer and end facer machine
  6. 5. Hydro Tester machine
  7. 6. Threading machine
  8. 7. Painting and oil machine
  9. 8. Automatic bundle and package machine

Read More About ferrite impeder rods

Read More About impeder rod

Spare Parts and Consumble Parts
 
  1.  
  2. 1. Rollers, Moulds, Dies, D2,D3 material to choose
  3. 2. Ferrite, Impeder, Fiberglass tube
  4. 3. HSS saw blades, TCT Saw blades, Friction saw blades
  5. 4. OD burr remove inserts, ID burr remover inserts
  6. 5. HF welder Induction Coil and other HF welder spare parts
  7. 6. Copper tube for induction Coil, PTFE pipe for Induction Coil
  8. 7. Mosfet, Boards
  9. 8. Steel pipe Strapping machine
  10. 9. Zinc Spray Machine, Zinc wire, Zinc spray gun

Read More About impeder rod

Read More About fiberglass tube

Certificate
 

Read More About erw tube mill china

Our Service
 
  1. Why Choose Us?
  2. 1.Leading Technology, Reliable Quality, Excellent Service! Optimized Design, High quality material select!  Heat treatment process guarantee!

  3. 2.Spiral bevel gear, drum gear coupling and carburization. Gear teeth quenching. Driven system stable, efficient and wearable with lower noise.

  4. 3.High precision wear resisting and Long life of toolings. All the machine Lathes, Key Grooves are positioned and Milled by CNC.

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

Read More About impeder rod

After-sales service

  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 hours for engineer response.
  6. 6.Your business relationship with us will be confidential to any third party.
  7. 7.  We welcome customers to visit our factory anytime.

Read More About impeder rod

Get in Touch

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.

* Name

* E-mail

Phone

*Message

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.

Related News

August Promotion at AIS Machinery – Complete Solutions for ERW Tube Mills & Steel Processing

2026-08-18 09:42:30

August Promotion at AIS Machinery – Complete Solutions for ERW Tube Mills & Steel Processing

AIS Machinery August Promotion is here! We are offering competitive prices on ERW Tube Mills, Slitting Lines, Cut-to-Length Lines, Cold Roll Forming Machines and Tube Mill Spare Parts. Whether you are planning a new tube production line, upgrading existing equipment, or looking for reliable spare parts, we can provide a complete solution. Our professional engineers offer technical support from machine selection to production, installation and after-sales service. Contact AIS Machinery this August and let us help you find the right equipment for your project.

C U Purlin Roll Forming Machine | Flexible C/U Profile Production

2026-08-17 09:43:30

C U Purlin Roll Forming Machine | Flexible C/U Profile Production

CU Profile Roll Forming Machine is designed to continuously produce C and U-shaped steel profiles from metal coils. The complete line can include a decoiler, leveling and feeding system, punching unit, roll forming machine, cutting system and run-out table. Depending on production requirements, the machine can use manual C/U changeover or computer-controlled automatic size adjustment. It is suitable for producing C/U channels, structural profiles, framing components and other steel sections with consistent dimensions and reliable production efficiency.

Double Head Uncoiler for Tube Mills: Continuous Coil Loading and Faster Production

2026-08-13 10:50:44

Double Head Uncoiler for Tube Mills: Continuous Coil Loading and Faster Production

Double Head Uncoiler is an efficient coil feeding machine designed for ERW tube mills, pipe mills, and coil processing lines. With two hydraulic expanding mandrels, it allows one steel coil to run while the next coil is prepared, reducing coil changeover time and production downtime. The hydraulic drive provides stable and reliable coil unwinding, making the double head uncoiler an ideal solution for medium and large-size tube mills, heavy steel coils, and high-production applications.

Buying a Steel Slitting Line? 8 Key Specifications You Should Know

2026-08-12 10:17:44

Buying a Steel Slitting Line? 8 Key Specifications You Should Know

Looking for a reliable Steel Slitting Line for your tube or pipe production? Our Coil Slitting Machine is designed to convert wide steel coils into accurate narrow strips for ERW Tube Mills, roll forming lines and other applications. From HR, CR and galvanized steel to different coil widths, thicknesses and weights, the slitting line can be customized to your requirements. ⚙️ Learn how to select the right slitting capacity, strip width, coil weight and production speed for your business.

Conveyor and Run Out Table for ERW Tube Mill | Pipe Conveying & Discharge System

2026-08-11 09:25:01

Conveyor and Run Out Table for ERW Tube Mill | Pipe Conveying & Discharge System

Conveyor and Run Out Table is an important pipe handling system in an ERW Tube Mill, mainly installed after the flying saw or cold saw. It supports, conveys, aligns, buffers, and discharges finished pipes smoothly to the next process. A properly designed run out table can reduce manual handling, protect pipe surfaces, and improve production efficiency. With customized roller layout, conveying speed, table length, and discharge design, it can be matched with different pipe sizes, production speeds, and downstream stacking or packing systems.

3 Inch–5 Inch Tube Mill: The Most Popular Size Range for ERW Pipe Production

2026-08-10 10:07:47

3 Inch–5 Inch Tube Mill: The Most Popular Size Range for ERW Pipe Production

3–5 Inch ERW Tube Mill is one of the most popular choices for steel pipe manufacturers. This tube mill size range is widely used for producing round, square, and rectangular steel tubes for construction, machinery, furniture, automotive, and structural applications. With flexible tube diameter and wall thickness options, a 3 inch, 4 inch, or 5 inch tube mill can meet different production requirements. Learn how to choose the right ERW tube mill based on your products, target market, production speed, and future demand.

Cold Roll Forming Machine with Punching: A Complete Guide for Custom Metal Profiles

2026-08-06 09:50:37

Cold Roll Forming Machine with Punching: A Complete Guide for Custom Metal Profiles

A Cold Roll Forming Machine with Punching combines precision roll forming and automatic punching in one efficient production line. It can produce C channels, U channels, garage door struts, solar mounting profiles, and many other custom steel sections with round holes, slots, or special cutouts. The punching system improves production efficiency, reduces secondary processing, and ensures accurate hole positioning. AIS Machinery provides customized roll forming solutions based on your profile drawings and production requirements.

Automatic vs Semi Automatic Shear and Welder: Which Coil Joining System Is Best for Your Tube Mill?

2026-08-05 09:48:14

Automatic vs Semi Automatic Shear and Welder: Which Coil Joining System Is Best for Your Tube Mill?

Our Automatic and Semi Automatic Shear and Welder systems are designed for reliable coil joining in ERW tube mills. Both machines use TIG welding technology to produce strong, smooth butt welds that pass easily through the accumulator and forming section. Whether you need a fully automated solution for high-volume production or a cost-effective semi automatic model, AIS Machinery offers customized systems to match different strip widths, thicknesses, and production capacities.

Send a Message

Dear customer, thank you for your attention! We provide high-quality machinery and equipment and look forward to your orders. Please inform us of your needs and we will respond quickly!

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.


en_USEnglish