Pneumatischer Sicherheitsstop STO/STW

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Overview
The XW Machinery STO/STW and FLO/FLW Safety Chuck is designed for high-speed winding and unwinding systems in printing, slitting, packaging, film converting, lithium battery, textile, and paper industries. Built for stable torque transmission and fast shaft loading/unloading, this industrial safety chuck provides a secure and efficient connection for air expanding shafts while reducing downtime during roll changes. Available in flange-mounted (FLO/FLW) and foot-mounted (STO/STW) configurations, with high-strength alloy steel or lightweight aluminum options to meet different machine requirements.

Key Features

• High torque transmission up to 400Nm
• Fast air shaft loading and unloading
• Compatible with most pneumatic air shafts
• Available in STO/STW and FLO/FLW models
• Custom square hole sizes available
• Heavy-duty alloy steel construction
• Optional lightweight aluminum body
• Stable operation at high winding speeds
• Precision machining for accurate positioning
• Long service life with hardened reel mouth design

Available Types

• STO / STW Safety Chuck — Foot-mounted safety chuck design suitable for rewinding and unwinding systems requiring stable base installation.
• FLO / FLW Safety Chuck — Flange-mounted safety chuck suitable for compact machine structures and side-frame installations.

Applications

• Slitting machines
• Flexographic printing machines
• Rotogravure printing machines
• Laminating machines
• Coating machines
• Packaging machinery
• Film converting equipment
• Lithium battery production lines
• Textile winding systems
• Paper processing machinery

Technical Specifications (table)
Item | Specification
Product Type | STO/STW / FLO/FLW Safety Chuck
Torque Capacity | Up to 400Nm
Material | Alloy Steel / Aluminum
Mounting Type | Foot Mounted / Flange Mounted
Shaft Compatibility | Air Expanding Shafts
Hole Type | Square / Custom
Application | Winding & Unwinding Systems
Surface Treatment | Hardened / Anti-corrosion
Customization | Available

Why Choose XW Machinery Safety Chucks?
At XW Machinery we focus on high-precision tension control and winding system components for industrial converting applications. Our safety chucks are engineered for smooth torque transmission, reduced machine vibration, faster roll replacement, long-term durability and stable operation under heavy loads. We support OEM customization for special shaft dimensions, custom torque requirements, non-standard square holes, aluminum lightweight structures and surface coating requirements.

Advantages Over Traditional Shaft Locking Systems

• Improved operator safety
• Higher roll changing efficiency
• Increased machine uptime
• Better torque stability
• Improved production consistency

Caractéristiques / spécifications techniques

• Torque rating: up to 400 Nm
• Configurations: foot-mounted (STO/STW) and flange-mounted (FLO/FLW)
• Material options: heavy-duty alloy steel or optional lightweight aluminum
• Shaft compatibility: designed for air expanding (pneumatic) shafts
• Hole types: square and custom sizes available
• Surface treatment: hardened and anti-corrosion options
• Applications: slitting, printing (flexographic, rotogravure), laminating, coating, packaging, film converting, lithium battery lines, textile and paper winding systems
• Customization: OEM options for shaft dimensions, torque, hole geometry and coatings