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HOME >> PRODUCTS >>Transformer Auxiliary Processing >> CNC Transformer Insulator Winding Spacer Milling & Slotting Machine (Auto Feeding)
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CNC Transformer Insulator Winding Spacer Milling & Slotting Machine (Auto Feeding)

Precision-engineered for power transformer insulation, this auto-feeding spacer milling machine processes pre-cut insulating paperboard strips into dovetail (swallow-tail) spacers with smooth peripheral fillets. Featuring hydraulic compression, high-speed motorized spindle (22000 r/min), and semi-auto horizontal arm feeding, it delivers ±0.2mm accuracy and 700-800 pieces per cycle. Compact, low-power (≤7.88kW), and user-friendly—optimizing workflow for 110kV-1100kV transformer winding oil gaps.



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Description

1. Core Features & Advantages

① One-Clamp Dovetail & Fillet Forming

Processes strips (good thickness, width, fillet) into single dovetail groove with dual-side fillets in one clamping. Eliminates re-fixturing, ensures consistency for transformer insulator spacers.

② High-Speed Motor Hydraulic Structure

High-speed motor (max 22000 r/min) with hydraulic system. Lateral traversing cylinder presses material; special motor auto-travels for milling/slotting. Hydraulic compression device stops at limit position—safe, efficient.

③ Semi-Automatic Auto Feeding

Place fixed-width/length/count spacers under horizontal arm. System auto-feeds, mills, completes forming. Simplifies operation, reduces labor intensity.

④ Precision & High Volume

Production length precision ±0.2mm. Processes 700-800 pieces at once. Feeding width 20-50mm, spacer length 5-1000mm, material thickness 1.3-3mm. Max feeding table thickness 1160mm.

⑤ Lightweight & Energy-Saving

Total system power ≤7880W (7.88kW). Compact enclosed design (white/black housing, viewing window) ensures workshop safety, dust/noise containment.

2. Key Technical Parameters

Parameter

Specification

Feeding Width

20 – 50 mm

Spacer Length

5 – 1000 mm

Length Precision

±0.2 mm

Material Thickness

1.3 – 3 mm

Max. Table Thickness

1160 mm

Max. Milling Speed

22000 r/min

Batch Capacity

700 – 800 pcs/cycle

System Power

≤ 7.88 kW (7880W)

Drive

High-Speed Motor + Hydraulic Cylinder

Groove Type

Single Dovetail (Swallow-tail) + Dual Fillets

Material

Insulating Paperboard / Laminated Paperboard

Control

Semi-Automatic (Auto-feeding, Limit Stop)

3. Application & Benefits

  • Application: Milling/slotting transformer winding insulator spacers (axial oil gap pads). Dovetail/swallow-tail grooves for 110kV-1100kV transformers.

  • Benefits: One-clamp forming, 22000r/min high-speed, ±0.2mm precision, 700-800pcs/batch, auto hydraulic feeding, 20-50mm width, 5-1000mm length, 1.3-3mm thickness, ≤7.88kW energy-saving, safe enclosed design, ideal for insulation workshops.

4. Quality Assurance & Manufacturer Service (YIBO Machinery)

  • Quality Control: Strict raw material standards → Precision machining → Assembly recheck → Pre-shipment testing.

  • Certifications: ISO9001:2020, CE/SGS/BV. Key components from Siemens/Schneider/Mitsubishi.

  • Experience: 23+ years, 85%+ China market share (Top 3 electrical equipment).

  • Clients: CASC, CRRC, ABB, EATON, DELIXI, RITZ, TENGEN, Russia Military Enterprise.

  • Delivery: ~90 working days after advance.

  • Payment: L/C, T/T, Western Union.

  • Warranty: 12 months (from Acceptance Report, max 14 months from delivery).

  • Support: Optional overseas installation & training, 24-hour response, video guidance.

→ **Contact our engineering team for custom spacer dimensions, dovetail groove designs, or integrated transformer insulation processing lines.


FAQ

Payment & Delivery

Payment term : L/C,T/T,Western Union

Delivery time : 90 working days after advance

Guarantee: The guarantee period shall be 12 months counting from the date of signing the Acceptance Report of this machine at the end-user’s site,but no longer than 14 months from the date of delivery.

What is YIBO?

8A Class Transformer Home with a full solution for the Transformer Industry

1, A real manufacturer with complete in-house facilities and passed ISO9001:2020 quality control system.

2, A professional R&D Center, having collaboration with well-know Shandong University.

3. A top performance company Certificated with International Standards like ISO, CE, SGS and BV etc.

4, A better cost-efficient supplier , all key components are international brands like Simens, Schneider and Mitsubishi etc.

5, A reliable business partner, served for  CASC,CRRC,CASDY,ABB,DELIXI, EATON, RITZ,TENGEN, Russia Military Enterprise etc in past 23 years.

6. A factory has passed the global TOP 500 enterprise clients inspection.

7. A market share in China is over 85% and Top 3 in electrical equipment field.

8. A have mainly manufacture the whole of electrical equipment and technical output service for decades.


Q1: How to grantee the quality ?

The quality is approved by national certificate ,several senior inspection personnel ,the brand material supplier ensure the safety and reliability of everything from storage to finished the goods .

Q2:Do you provide overseas installation and training ?

A: It’s optional .Our company will provide the guidance and videos for installation and commissioning.

If you need ,we can send engineers for for overseas installation and training.

Q3:How long is the warranty ?

A:The warranty period is 12 months .During Any problems ,our company will respond within 24 hours .






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18# North Road Anyuan, Economic& Tech.Development Zone, Pingxiang City, Jiangxi Proviince China.

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info@yibowindingmachine.com

0086  15979221627

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