Nishimura Type Slip Shaft for Precision Slitting and Rewinding

Are your slit rolls finishing with different tightness, uneven edges or telescoping? When several rolls are rewound on one rigid shaft, small differences in material thickness and roll diameter can create different winding tensions. The Nishimura Type Slip Shaft from XW Machinery is designed to compensate for those differences through controlled friction slip at each roll position.

Also called a Nishimura Type Differential Shaft or Nishimura Type Friction Air Shaft, this pneumatic winding shaft is suited to multi-roll slitting and rewinding of plastic film, PET film, flexible packaging, labels, paper and foil. It helps converters produce more consistent rolls while giving machine builders a shaft configuration tailored to their equipment.

How Does a Nishimura Type Slip Shaft Work?

Compressed air adjusts the friction force used to transmit torque from the shaft to its winding rings. As individual rolls grow at different rates, their rings can slip relative to the shaft instead of forcing every core to rotate at exactly the same speed. This controlled slip helps compensate for differences in roll diameter and material thickness during rewinding.

The required air pressure and shaft configuration depend on the material, core size, slit width, roll weight and target winding tension. For a closer look at the mechanism, read our guide to differential shaft components and working principles.

Benefits for Slitter Rewinders

• Controlled tension compensation: Friction rings allow speed differences between adjacent rolls.
• More consistent roll quality: Helps reduce loose winding, uneven roll hardness, wrinkles and telescoping associated with tension variation.
• Adjustable friction torque: Pneumatic adjustment allows the shaft to be set for different winding requirements.
• Custom machine fit: Shaft dimensions and mounting details can be specified for a new machine or an existing rewinder.

Applications of the Nishimura Type Differential Shaft

This shaft design is used where one rewinding station must handle multiple slit rolls with controlled slip. Typical applications include film and flexible packaging slitting, label converting, paper rewinding and foil processing. For delicate or low-tension materials, the friction configuration should be selected against the actual operating conditions rather than core diameter alone.

If your machine winds a single core and does not require differential slip between rolls, explore XW Machinery's air expanding shaft options.

Custom Nishimura Type Friction Air Shaft Manufacturing

XW Machinery manufactures custom differential rewind shafts for slitting, rewinding and roll-to-roll converting equipment. Our team can review an existing shaft drawing or work from your machine requirements to determine the appropriate shaft length, core inner diameter, friction ring widths, shaft-end dimensions and pneumatic arrangement.

For replacement projects, please provide photos and drawings of the current shaft, including its bearing journals, drive connection and air inlet. For new equipment, share the material type, number and width of slit rolls, maximum roll weight, operating speed and target tension range.

Frequently Asked Questions

1. What is a Nishimura Type Slip Shaft?

It is a differential rewind shaft that uses friction rings to transmit torque while allowing controlled slip between the shaft and individual winding cores. This helps compensate for speed and tension differences when multiple rolls are rewound together.

2. Is this an original Nishimura shaft?

This is a Nishimura type shaft manufactured by XW Machinery. If you need a replacement for an existing shaft, send us its drawing and dimensions so we can evaluate the required fit and configuration.

3. How is it different from a standard air expanding shaft?

A standard air expanding shaft grips a core so it rotates with the shaft. A differential slip shaft allows winding positions to slip at controlled friction torque, which is useful when several slit rolls develop different diameters during rewinding.

4. How is the winding torque adjusted?

Compressed air adjusts the friction force that transmits torque to the winding rings. The appropriate setting depends on the shaft design, material, roll dimensions and required winding tension.

5. Can it be used for thin film or battery materials?

These applications can be evaluated, but delicate materials require careful selection of the friction configuration and tension range. Provide your material specifications and operating conditions so XW Machinery can review the application.

6. Can XW Machinery make a replacement for my existing slip shaft?

Yes, we can evaluate a custom replacement using your original shaft drawing or measured dimensions. Key details include the core size, ring layout, bearing journals, shaft ends, drive connection and air inlet.

7. Can the core size, friction ring width and shaft ends be customized?

These dimensions can be specified according to your cores, slit widths and machine interface. The final configuration should be confirmed from your drawing and winding requirements.

8. What information do you need for a quotation?

Please send the shaft drawing if available, plus the core inner diameter, shaft length, number and width of slit rolls, material type, maximum roll weight, operating speed and target tension range.

Request a Nishimura Type Slip Shaft Quotation

Send XW Machinery your drawing and winding requirements. Our engineering team will review your application and provide a customized shaft proposal and quotation.