TAS3020/200/260 SCHAEFER compression-expansion ring

SCHAEFER TAS 3020/200/260 Locking Assembly

The SCHAEFER TAS 3020/200/260 is a heavy-duty mechanical fastener designed to create a rigid, backlash-free frictional connection on 200 mm diameter shafts. This system utilizes a double-tapered mechanism: tightening the integrated screws generates massive radial pressure, securing the drive component to the shaft without the need for keyways. With its self-centering function, this model ensures superior concentricity, which is vital for minimizing vibration in large-scale industrial drive systems.

Application

• Heavy Conveyor Drums: Stable mounting of drive pulleys in high-capacity material handling (mining, power plants).
• Large Gears and Pulleys: Safe transmission of extreme torque without risking shaft integrity.
• Industrial Gearboxes and Mills: Connecting output shafts in the heaviest production machinery.
• Rigid Couplings: Building durable shaft-to-shaft connections with high alignment precision.
• Marine and Energy sectors: Fastening rotors and transmission elements operating under severe stress.

Technical Specification

• Manufacturer: SCHAEFER (Germany)
• Designation: TAS 3020/200/260
• Main Dimensions: 200 mm (ID / d) × 260 mm (OD / D).
• Type: Self-centering "Heavy Duty" Locking Assembly.
• Material: High-grade heat-treated structural steel.

Note: For the installation of a 200 mm diameter model, it is mandatory to use a torque wrench and strictly follow the tightening sequence (in stages: 50%, 75%, and 100% of the target Nm torque).

Features and Benefits

• Elimination of Notch Effect: Keyless mounting preserves the shaft's fatigue strength, allowing for higher power transmission.
• Superior Rotational Accuracy: The self-centering geometry minimizes radial run-out, protecting bearings from premature failure.
• Infinite Angular Adjustment: Allows for perfect positioning of the hub relative to the shaft before final locking.
• Dynamic Load Resilience: The frictional connection excels under sudden reversals and severe torque shocks.
• Simple Maintenance: Integrated jacking-off threads allow for quick and non-destructive release during service intervals.

Why Choose This Product

Opting for the SCHAEFER TAS 3020/200/260 locking assembly is an investment in the maximum reliability of your strategic drive nodes. For 200 mm shafts, any failure caused by keyway wear leads to staggering repair costs. SCHAEFER keyless technology virtually eliminates this risk, ensuring industrial process stability and significantly lowering the Total Cost of Ownership (TCO).