CNC Tool Holder Shrink Fit Machine

• Customization: Available
• After-sales Service: Provide
• Warranty: 12 Months
• Model NO.: ST-380 Plus
• Type: Induction Heating Machine
• Certification: ISO
• Structure: Vertical Type
• Brand: St-380 Plus
• Machine Type: Induction Shrink Fit Machine
• Model Number: St-380 Plus
• Power: 3000W
• Power Supply: 220V/50Hz (16A)
• Heating Range: 3-25mm
• Gas Pressure Range: 0-0.7MPa (0-7.0bar)
• Recommended Air Tube Diameter: 8mm
• Heating Material: Stainless Steel / Alloy Steel Tool Holders
• Operating Ambient Temperature: -10℃ to 50℃
• Machine Dimensions: 450X450X600mm
• Machine Weight: 22kg (+1kg)
• Machine Color: White
• Display Type: Digital Display
• Application: CNC Milling / Lathe Tool Holder Mounting
• Voltage Type: Single Phase
• Transport Package: Wooden Pallet
• Specification: middle
• Trademark: Neutral Trademark
• Origin: China

Product Description

ST-380 Plus Induction Shrink Fit Machine — Reliable Tool Holder Heating for CNC Machining

The ST-380 Plus is an induction shrink fit machine designed for fast, precise mounting of tool holders in CNC milling and lathe applications. Using electromagnetic induction heating, it uniformly expands the holder bore so cutting tools can be inserted and locked with high clamping force and excellent runout accuracy. With 3000W heating power, it handles stainless steel and alloy steel tool holders with a heating range of 3-25mm, covering common BT, HSK, SK holder sizes. The bench-top vertical design, digital display and simple operation make it easy for any workshop to use, while the adjustable gas cooling system (0-0.7MPa) shortens cycle time and protects holder accuracy. Compact in size (450x450x600mm, 22kg) and backed by a 12-month warranty, the ST-380 Plus is a cost-effective solution for CNC shops looking to improve tool holding quality and machining consistency.

Company Profile

Shandong Ounuowei CNC Tool Co., Ltd.,

Shandong Ounuowei CNC Tool Co., Ltd., established in 2009, is located in the Sishui Economic Development Zone, Jining, Shandong Province. It is a professional manufacturer of medium and high-end CNC toolholders. Over the years, Ounuowei has been focusing on the R&D, design and manufacturing of high-end CNC toolholder products. Our main products include HSK, BBT, BT, ISO, SK, NT and other high-precision CNC toolholder series, ER and SK high-precision collets, high-end milling cutter discs, milling toolholders, quick drills, corn cob milling cutters, indexable tools and machining center peripheral products. Our products comply with various standards such as Chinese national standard (GB), ISO, German standard (DIN), American standard (ANSI) and Japanese standard (JIS). Product design is carried out using software such as Pro/Engineer, UG (NX) and AutoCAD. In addition to standard products, we also design and manufacture special and non-standard CNC tools and other advanced tooling solutions for the industry.

Main Product

Cost-effective price,Sufficient Stock ,Quality Guaranteed 

Tool Holders Series : 
HSK tool holder ,BT tool holder,SK/DAT tool holder ,NT tool holder 
Holder Accessories : 
ER collets ,Pull stud ,Spanner ,Locking Device ,Collet chuck ,Drill chuck
Boring Head Series :
Boring head set ,Fine  boring  head , Rough Boring head ,Boring head shank  
Milling Cutter Series  :
Face milling cutter ,End Milling Cutter
Live center ,Angle heads ,machine tool vise ,Steel clamping kit ,Tapping tools ……

Our Service

Our Advantages

1. 15+ Years of Industry Focus Founded in 2009, with over 15 years dedicated exclusively to medium and high-end CNC toolholders — we are not a general trading company.

2. National-Level Certifications Recognized as a National High-Tech Enterprise and National "Little Giant" Specialized & Sophisticated Enterprise by the Chinese government — both are audited, not self-claimed.

3. International Certifications ISO 9001 quality management, TÜV, and SGS certified — no barriers for export markets.

4. 18 Patented Technologies Holding 18 utility model and design patents covering clamping devices, hydraulic sealing, quick-change fixtures, inspection equipment, and more.

5. 200-300 Employee Factory A self-owned factory with 201-300 employees (101-200 on the production floor), monthly output value of RMB 510K-1M, and annual turnover exceeding RMB 20 million.

6. Multi-Standard Compliance Products comply with GB, ISO, DIN, ANSI, and JIS standards — one product system serving global markets.

7. Full Product Range, One-Stop Sourcing From six major toolholder series (HSK/BT/ISO/SK/NT) to ER/SK collets, milling cutter discs, milling toolholders, quick drills, corn cob milling cutters, indexable tools, and machining center peripherals — covering the full CNC tooling spectrum.

8. Flexible Customization, Low MOQ We accept drawing-based, sample-based, and OEM customization with MOQ as low as 2 pieces — no "MOQ that scares you away."

Packaging & Shipping

FAQ

1. Are you a factory or a trading company?

-We are a manufacturer. Our factory is located in Sishui Economic Development Zone, Jining, Shandong Province, with 201-300 employees (101-200 on the production floor) and an annual turnover exceeding RMB 20 million. We do not trade — we design, produce, and ship from our own facility.

2. What products do you manufacture?

-We specialize in medium and high-end CNC toolholders and accessories, including:

   Toolholders: HSK, BT, ISO, SK, NT series; dampening boring bars; hydraulic and heat-shrink toolholders
   Collets: ER, SK, HC series
   Cutting tools: milling cutter discs, milling toolholders, quick drills, corn cob milling cutters, indexable tools
   Peripherals: machining center accessories
We also have an entry-level product line for cost-sensitive markets.

3. What certifications do you hold?

-We are ISO 9001, TÜV, SGS, and SA8000 certified. We are also recognized as a National High-Tech Enterprise and a National "Little Giant" Specialized & Sophisticated Enterprise, both audited by the Chinese government.

4. What standards do your products comply with?

-Our products are manufactured to GB (Chinese national standard), ISO, DIN (German), ANSI (American), and JIS (Japanese) standards. You can specify which standard you need when placing an order.

5. Can you make custom or non-standard tools?

-Yes. We accept drawing-based, sample-based, and OEM orders. Our design team uses Pro/Engineer, UG (NX), AutoCAD, and SolidWorks. We have 18 patents in clamping, hydraulic sealing, quick-change fixtures, and inspection devices — custom design is part of our daily work.

6. What is your minimum order quantity (MOQ)?

-For standard products, MOQ depends on the specific item — many models are stocked and can ship in small quantities.

7. What precision level can you achieve?

-Heat-shrink toolholders: clamping accuracy < 0.003 mm, rated for 3,000+ heating cycles
   Hydraulic toolholders: repeat clamping accuracy < 0.005 mm
   Dampening boring bars: patented vibration-damping design
All products go through in-process and final inspection before shipment.

8. How long have you been in this business?

-The company was founded in 2009. We have been manufacturing CNC toolholders for over 15 years.