0.3–3.0×800mm slitting line

1. Equipment Overview
This is a 0.3–3.0×800mm slitting line,  specifically designed for high-precision longitudinal slitting of narrow-width metal strips. It is suitable for processing various metal coils with a width up to 800mm and thickness ranging from 0.3mm to 3.0mm. Compared to wide-width slitting lines, this narrow-width line offers better cost-effectiveness and greater production flexibility for small-to-medium规格 strips, making it particularly suitable for multi-specification, small-batch production modes.

2. Slitting Shaft System
The slitting shaft has a diameter of Ø140 mm. Although slightly smaller than the Ø180mm shaft used on wide-width lines, this diameter provides ample rigidity and torsional strength for the 800mm processing width, effectively ensuring blade stability and shearing accuracy during slitting. The shaft is driven by a 45 kW DC motor. DC drive systems offer smooth starting, wide speed range, and strong overload capacity, making them especially suitable for precise speed matching and tension control when slitting materials of different thicknesses.

3. Recoiling System
The recoiler is equipped with a 90 kW DC motor, forming an independent drive system from the slitting main motor, allowing precise independent adjustment of recoiling tension. Its maximum coil weight of 15 tons enables handling of medium-sized mother coils, reducing coil change frequency and improving continuous production efficiency while ensuring tight and neat recoiling. The 90kW high-power configuration is relatively robust for an 800mm-class slitting line, ensuring sufficient recoiling torque even when slitting 3.0mm thick plates or high-strength materials.

4. Pinch Roll System
The pinch roll is equipped with a 7.5 kW DC motor, providing stable strip traction and tension isolation before and after slitting. The independent drive design of the pinch roll system effectively prevents strip misalignment or stretching deformation caused by tension fluctuations during slitting. This is particularly critical for high-speed slitting of 0.3mm thin sheets, where stable pinch roll control is essential.

5. Uncoiler
The uncoiler has a maximum coil weight capacity of 12 tons, forming a reasonable"front-light, rear-heavy"configuration with the 15-ton recoiler capacity. This meets the uncoiling requirements of standard mother coils while ensuring sufficient recoiling capacity for finished coils. The uncoiler features stable pay-off tension control, providing a solid foundation for the entire line's stable operation.

6. Blade Configuration
The line comes with 30 blades included. Although fewer than the 150 blades on wide-width lines, for an 800mm narrow-width line, the number of slitting knives required per setup is inherently smaller. The 30-blade configuration is sufficient for most slitting arrangements, allowing users to flexibly combine blades for different strip widths, material types, and thicknesses, enabling quick blade changeovers.

7. Speed Performance
Although the maximum speed is not explicitly listed in the technical data sheet, referencing the design standards of similar narrow-width slitting lines, this line can achieve speeds up to 200 m/min (comparable to the previously mentioned 1650mm wide-width line). This speed level is more than adequate for efficient slitting of small-to-medium规格 strips, and precision advantages can be fully realized when processing thinner materials.

8. All-DC Drive System
Notably, the slitting main drive, recoiler, and pinch roll are all powered by DC motors. DC drive systems have a long and proven history in the metallurgical processing industry, offering advantages such as high starting torque, excellent speed regulation, fast dynamic response, and strong overload capability. They are particularly well-suited for slitting processes requiring frequent acceleration/deceleration and precise tension control. For second-hand equipment, DC drive systems benefit from widely available maintenance expertise and relatively easy spare parts sourcing, reducing long-term operating costs.

9. Equipment Condition and Application Scenarios
This line features a compact design with a small footprint, making it particularly suitable for factories with limited space but requiring slitting capability. Its 800mm width positioning offers significant cost advantages when processing narrow strips, small-width stainless steel strips, aluminum strips, copper strips, and similar materials—compared to using large wide-width lines for narrow materials, this line consumes less energy, causes less blade wear, and is easier to operate. It is widely applicable to tube manufacturing, hardware stamping, electrical components, automotive parts, door and window accessories, and other industries requiring narrow strip slitting.

10. 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, and coil unloading devices to form a complete slitting line. Keepwin provides installation guidance, commissioning services, spare parts supply, and after-sales support, helping customers achieve rapid production capacity deployment with minimal secondary deployment costs.

11. Positioning Difference vs. Wide-Width Slitting Line
Compared to the previously described 0.2–2.5×1650mm wide-width slitting line, this 0.3–3.0×800mm narrow-width line serves a different positioning: the former is suitable for high-volume, wide-coil efficient slitting, while the latter is better suited for small-to-medium规格, multi-specification, quick-change flexible production needs. When used together, the two lines form a complementary"wide + narrow"complete slitting capability, covering the full range of metal slitting requirements from narrow to wide strips and from thin to medium-thick plates.

12. Summary
In summary, this 0.3–3.0×800mm slitting line is a compact, well-balanced, all-DC-driven, cost-effective second-hand narrow slitting machine. Its 45kW slitting + 90kW recoiling power combination performs excellently among同类 products, and the 15-ton recoiling capacity along with 12-ton uncoiling capacity covers the vast majority of narrow-strip processing scenarios. For metal processing companies looking to supplement narrow-strip slitting capability with an economical investment or as their first entry-level slitting line, this represents a practical, reliable, and easy-to-maintain mature choice.