TAS3003/110/155 SCHAEFER compression-expansion ring

SCHAEFER TAS 3003/110/155 Locking Assembly

The SCHAEFER TAS 3003/110/155 is a high-precision mechanical component designed to create a rigid, backlash-free frictional connection between a shaft and a hub. Based on a double-taper principle, tightening the integrated screws generates massive radial forces that secure gears, pulleys, or couplings onto a 110 mm diameter shaft. This keyless mounting design eliminates stress concentrations (notch effect), significantly increasing the shaft's fatigue strength compared to traditional keyed joints.

Application

• Conveyor Systems: Mounting drive drums in heavy-duty material handling equipment.
• Heavy Duty Pulleys and Sprockets: Secure fastening of components transmitting high torque under reversing loads.
• Industrial Gearboxes: Connecting output shafts to functional machine elements in mills and crushers.
• Coupling Installation: Backlash-free seating of rigid and flexible couplings in high-dynamic systems.
• Machine Retrofitting: Effective repair for connections on shafts with damaged or worn-out keyways.

Technical Specification

• Manufacturer: SCHAEFER (Germany)
• Designation: TAS 3003/110/155
• Main Dimensions: 110 mm (ID / d) × 155 mm (OD / D).
• Type: Frictional Locking Assembly.
• Mechanism: Self-centering, screw-actuated clamping.

Installation Tip: To achieve full rated load capacity, screws must be tightened gradually in a crosswise pattern using a torque wrench, according to the Nm values specified by SCHAEFER.

Features and Benefits

• Superior Centering: Minimizes radial run-out of mounted parts, protecting bearings from premature failure.
• High Rigidity: Total absence of rotational play ensures precise power transmission even during emergency stops.
• Shaft Integrity: Keyless mounting preserves the shaft's structure, allowing for higher power transmission.
• Easy Adjustment: Allows for infinite angular and axial positioning of the component before final locking.
• Simple Removal: Integrated jacking-off threads facilitate quick and non-destructive disassembly during maintenance.

Why Choose This Product

Opting for the SCHAEFER TAS 3003/110/155 locking assembly is an investment in superior drivetrain reliability. German engineering ensures consistent technical parameters and operational safety under extreme loads. By eliminating the risk of failures caused by mechanical play, this product effectively lowers total operating costs and reduces maintenance downtime.