Slitting & Rewinding Technical Guides
Practical, field-tested guides for slitting, rewinding and converting lines: how to size, select and maintain air shafts, differential shafts, magnetic powder brakes and clutches, tension controllers and web guiding systems. Written by XW Machinery application engineers for plant engineers and purchasing teams.
Air Shafts & Expanding Shafts
Shaft body, lug and leaf options, load ratings, grip and core-fit for 3 inch and 6 inch cores.
- Paper Core vs Plastic Core: Air Shaft Grip Differences
- Why Is a Paper Core Stuck on an Air Shaft After Deflation?
- Rotating Air Sleeves on Fixed Shafts | XW Machinery
- Paper Core Stuck on Air Shaft? Fixes & Prevention | XW
Differential & Slip Shafts
Slip torque tuning for multi-roll rewinding on film, tape, paper and nonwoven lines.
- Retrofitting a Slitter with Differential Shafts: Drive and Space Requirements
- Differential Rewind Shaft Overspeed: How to Set and Verify the Speed Difference
- Web Tension Control for Slitting Machines | XW Machinery
Magnetic Powder Brakes & Clutches
Torque selection, heat limits and duty cycle for unwind braking and rewind clutching.
- Magnetic Powder Clutch Slip Power: How to Calculate Heat Load
- Magnetic Powder Brake vs Pneumatic Brake
- Magnetic Powder Brake vs Servo Motor for Unwinding
- How to Maintain a Magnetic Powder Brake
Tension Control Systems
Controllers, load cells and dancer loops for stable web tension from unwind to rewind.
- Tension Load Cell Calibration: Zero and Span Setup for a Web Line
- Magnetic Powder Clutch Slip Power: How to Calculate Heat Load
- Web Tension Control for Film Rewinding
- Web Tension Control for Printing Machines
Web Guiding & Edge Position Control
EPC sensors, guide assemblies and correction logic for clean roll edges at speed.
- Replacing an Obsolete Web Guiding Assembly: Measurements to Collect
- Web Guiding System for Printing and Packaging Machines
- Web Guiding System for Slitting Machines
- Web Guiding System Not Responding: Troubleshooting Guide
Slitting & Rewinding Machines
Defect diagnosis, rewinding quality and line setup notes for slitter rewinder operators.
- Why Is a Paper Core Stuck on an Air Shaft After Deflation?
- Rotating Air Sleeves on Fixed Shafts | XW Machinery
- Paper Core Stuck on Air Shaft? Fixes & Prevention | XW
- Cantilever Air Shafts: Load and Bearing Requirements to Check
Not sure which shaft or brake fits your line? Send us your core size, roll weight and line speed — our engineers reply with a sizing recommendation.