Created on 04.10

How a Differential Slip Shaft is Made

A differential slip shaft is a key component in slitting and rewinding machines. It allows multiple rolls to rewind simultaneously while compensating for tension differences. Manufacturing a high-precision slip shaft involves several strict processes.

1. Raw Material Selection

High-strength alloy steel is typically used to ensure:

mechanical strength
wear resistance
long-term stability

2. Precision Shaft Machining

Turning, milling, and grinding create the shaft body. Key factors:

straightness
concentricity
surface finish

3. Internal Air Channel Machining

Precision air channels control friction rings. Requirements:

good sealing
uniform airflow
no leakage

4. Friction Ring Production

Friction rings enable tension compensation. They require:

stable friction coefficient
wear resistance
high precision

5. Surface Treatment

Surface finishing improves durability:

chrome plating
nitriding
polishing

6. Precision Assembly

Components are assembled:

friction rings
air system
end fittings

7. Balancing and Inspection

Final testing includes:

dynamic balancing
air leakage test
concentricity check
running test

Each step determines performance and service life.