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Max. diameter of boring: 400mm，Max. output torque of spindle: 28KN.m，Max. feeding force of feed carriage: 80KN
challenging internal hole processing tasks. With a boring diameter of up to ∅400mm, a spindle output torque of 28KN.m, and a powerful 80KN feed carriage, it offers reliable boring performance in hardened materials or oversized components. Ideal for workshops handling structural and hydraulic system parts, it ensures stability, accuracy, and surface finish over long travel distances.
TK2140 Series
Spare parts supply
On-site installation service
Customized design
Why Choose Our CNC Solutions
Key Features
- ● Max. boring diameter of ∅400mm for large-scale tube and barrel machining.
- ● 28KN.m spindle torque ensures strong and continuous cutting power.
- ● 80KN feed force supports smooth tool advancement in long-hole operations.
- ● CNC programmable feed system enhances accuracy and repeatability.
- ● Suitable for BTA tooling systems and deep-hole cooling chip removal.
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Recommended Configurations
- ● BTA deep-hole tooling： Ensures precise boring with internal chip removal.
- ● High-pressure coolant system： Enhances chip evacuation and tool cooling.
- ● Steady rest support system： Prevents bar deflection during long boring.
- ● Servo automatic feed control： Increases control precision.
- ● Chip conveyor： Improves cleanliness and automation.
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Application Case
- ● Client: Oil & Gas Equipment Manufacturer – United States.
- ● Use Case: Deep-hole boring of thick-walled steel hydraulic cylinder tubes (∅390mm × 4500mm).
- ● Setup: TK2140 with BTA tooling system, high-pressure coolant pump, dual steady rest supports.
- ● Results: Boring straightness deviation: ≤ ±0.03 mm, surface roughness: ≤ 3.0 μm, cycle time for one full-length part: 65 minutes, client feedback: “This machine gives us both torque and precision—perfect for our heavy-duty cylinder line.”
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Product Specifications
| Specifications | Unit | TK2140 |
|---|---|---|
| Range of spindle speeds | rpm | 5~450 |
| Max.output torque of spindle | KN.m | 28 |
| Max.feeding force of feed carriage | KN | 80 |
| Feed speed range of feed carriage | mm/min | 0~5000 |
| Diameter range of bore | mm | ∅50~155 |
| Max.diameter of boring | mm | ∅400 |
| Machine weight of 3 meters | Kg | 35 |
| Add weight per meter | Kg | 1000 |
| Machine size | mm | 13850*4300*2300 |
Catalog
Frequently Asked Questions
Our machines are suitable for long and heavy cylindrical components such as hydraulic cylinders, gun barrels, spindle shafts, mold rods, tube sheets, and drill collars, typically requiring holes with a length-to-diameter ratio over 10.
Minnuo deep hole machines support multiple methods: BTA drilling (single-tube boring system) Gun drilling (internal coolant) Counterboring and Skiving & Roller Burnishing These methods are suitable for different materials and tolerance needs.
Drilled holes can achieve straightness ≤ 0.05 mm/1000 mm, and surface roughness up to Ra 0.4–1.6 μm, depending on the tool and operation used.
Absolutely! Just send us your workpiece drawing or the hole diameter, depth, material, and required tolerance. We’ll recommend a suitable deep hole drilling and boring machine model within 10 minutes.
Yes! We offer full customization, including machining diameter range, effective depth, machine bed length, tool type (BTA/Gun Drill), CNC control, and coolant systems according to customer needs.
We use high-rigidity bed designs, servo/hydraulic feed systems, high-pressure coolant systems, and chip evacuation via internal and external channels, all tested before delivery with cutting trials.
Standard models are delivered in 30–45 working days. Special large machines or customized solutions may take 60–90 working days, depending on complexity.
Minnuo provides a one-year warranty, 24/7 technical support, training on tool setup and coolant use, remote diagnostics, and long-term spare parts availability.
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