1650mm wide-width slitting line

1. Equipment Overview
This is a 1650mm wide-width slitting line, manufactured by Wuxi Puxin Machinery Co., Ltd. Wuxi Puxin is a well-established enterprise in China's metallurgical equipment manufacturing sector, renowned for producing large-scale slitting lines, cut-to-length lines, pickling lines, and other complete metallurgical equipment. Its products enjoy a strong reputation and extensive customer base both domestically and internationally. This equipment represents one of Puxin's flagship products in the large-specification slitting line category.

2. Slitting Shaft System — Heavy-Duty Configuration
The slitting shaft has a diameter of Ø220 mm, representing the largest shaft diameter and highest rigidity among all slitting lines introduced so far. For comparison:

• The previously mentioned 1650mm line (Jinan Yigao, 2013) features Ø180mm;

• The 800mm line features Ø140mm;

• The 750mm line features Ø100mm.

The Ø220mm oversized shaft diameter translates to extremely high bending rigidity and torsional strength, ensuring ultimate blade stability when slitting plates above 3.0mm thickness or high-strength materials (such as high-strength steel and stainless steel). It effectively suppresses vibration and deflection, thereby guaranteeing slitting width accuracy and edge quality. The shaft is driven by a 75 kW DC motor, providing ample cutting power.

3. Recoiling System — High-Power Configuration
The recoiler is equipped with a 110 kW DC motor, representing the highest recoiling power configuration among all equipment introduced so far. The 110kW robust power ensures stable and sufficient recoiling tension under demanding conditions such as high-speed recoiling, heavy coil weights, and thick materials, guaranteeing tight and neatly wound finished coils while preventing interlayer slippage and coil loosening.

4. Uncoiler System
The uncoiler is equipped with a 22 kW DC motor. Compared to narrow-width lines (e.g., the 800mm line without a separately listed uncoiler motor, and the 750mm line without uncoiler parameters), the 22kW uncoiling power provides ample pay-off torque under wide-width and heavy-coil conditions, ensuring smooth uncoiling of mother coils during high-speed slitting and preventing strip misalignment or uneven stretching caused by insufficient pay-off tension.

5. Pinch Roll System
The pinch roll is equipped with a 15 kW DC motor, providing smooth strip traction and tension isolation before and after slitting. The 15kW pinch roll power is a high-end configuration among comparable wide-width lines, ensuring sufficient clamping and traction force under high-speed, high-tension conditions, effectively preventing strip misalignment and stretching deformation.

6. All-DC Drive System
The entire line—slitting main drive, uncoiler, recoiler, and pinch roll—is powered entirely by DC motors, forming a complete all-DC drive system. The advantages of DC drives in heavy-duty metallurgical equipment are particularly prominent:

• Extremely high starting torque: Suitable for heavy-load starting conditions;

• Wide and smooth speed range: Enables precise control across a broad speed spectrum;

• Fast dynamic response: Quickly adjusts to tension fluctuations and speed changes;

• Strong overload capacity: Short-term overload capacity can reach 1.5–2 times the rated value, suitable for processing thick plates and high-strength materials;

• Mature maintenance: DC drives, brushes, and other spare parts are readily available, with widespread maintenance expertise.

7. Speed Performance
The line achieves a maximum operating speed of 200 m/min, matching the speed level of the previously mentioned slitting lines. The ability to stably reach 200m/min under wide-width 1650mm and heavy-coil conditions fully demonstrates the comprehensive strength of this equipment in terms of rigidity, power, and control systems.

8. Structural Design and Manufacturing Quality
Wuxi Puxin has accumulated extensive experience in large-scale metallurgical equipment manufacturing, with its equipment renowned for substantial material usage, high machining precision, and rigorous assembly. As can be seen from the equipment images in the technical data sheet, the line features heavy-duty construction and well-organized components, reflecting a high manufacturing standard. For second-hand equipment, the Puxin brand itself serves as a quality guarantee—its equipment generally maintains better precision retention and structural stability over long-term operation compared to同类 products.

9. Application Scenarios and Processing Capabilities
The 1650mm wide-width slitting line is a"workhorse model"in the metal processing industry, capable of covering the slitting requirements of the vast majority of conventional metal strips:

• Thickness range: Although not explicitly listed in the table, referencing the Ø220mm shaft and 75kW/110kW power combination, this equipment can cover at least 0.3mm to 4.0mm or even a wider thickness range, offering stronger thick-plate processing capability than the previously mentioned 0.2–2.5mm 1650 line;

• Width range: Maximum 1650mm, the standard width specification for cold-rolled, galvanized, prepainted, and stainless steel coils;

• Material types: Suitable for cold-rolled steel, hot-rolled pickled steel, galvanized steel, prepainted steel, stainless steel, aluminum, copper, and various other metals;

• Downstream industries: Widely serving automotive manufacturing, home appliance production, steel structure construction, tube manufacturing, hardware processing, electrical equipment, and other fields.

11. Brand Value and Second-Hand Market Recognition
Wuxi Puxin, as a first-tier brand in China's metallurgical equipment manufacturing sector, enjoys high recognition and market liquidity for its second-hand equipment. Puxin equipment features high component standardization, complete drawing documentation, and a robust after-sales technical support system—all of which are significant advantages in second-hand transactions. Buyers can obtain more reliable technical documentation, more convenient spare parts access, and lower technical modification barriers.

12. Added Value
As a used metallurgical total solution provider, Keepwin Industry Co., Limited offers not only the main unit but also optional auxiliary equipment such as loading trolleys, hydraulic systems, electrical control systems, coil unloading devices, tension control systems, and circular shears to form a complete 1650mm slitting line. Keepwin provides installation guidance, commissioning services, spare parts supply, and after-sales support. Particularly for Wuxi Puxin brand equipment, Keepwin can coordinate with the original manufacturer for in-depth technical support.

13. Strategic Procurement Recommendations
For companies planning to establish or expand wide-width slitting processing capabilities, this Wuxi Puxin 1650mm slitting line offers the following strategic value:

• Top-tier configuration from the start: Ø220mm shaft + 110kW recoiler, capable of handling the vast majority of processing needs without future upgrades;

• Brand assurance: Wuxi Puxin's manufacturing quality and brand reputation reduce technical risks;

• All-DC drive: Mature and reliable transmission system with predictable maintenance costs;

• Complementary with narrow-width lines: When combined with narrow-width slitting lines (such as the 800mm or 750mm lines), it forms a"wide + narrow, thick + thin"complete slitting processing system, greatly enhancing order-taking capability and production flexibility.

14. Summary
In summary, this 1650mm wide-width slitting line is a top-configured, ultra-rigid, all-DC-driven, brand-renowned second-hand wide slitting machine. The Ø220mm heavy-duty shaft, 110kW high-power recoiler, 22kW uncoiler, and 15kW pinch roll constitute a complete slitting system with ample power, stable structure, and precise control. For metal processing companies seeking high-performance wide-width slitting solutions, this represents a high-quality option worthy of serious consideration.