TAS130/060/090 SCHAEFER compression-expansion ring

SCHAEFER TAS 130/060/090 Locking Assembly

The SCHAEFER TAS 130/060/090 is a high-precision frictional locking device designed to create a rigid, backlash-free connection between a shaft and a hub. Utilizing a double-taper system, tightening the integrated screws generates uniform radial pressure onto a 60 mm diameter shaft. This keyless design eliminates the need for traditional keyways, preventing shaft stress concentrations (notch effect) and allowing for infinite angular positioning of drive components.

Application

• Pulley and Gear Mounting: Precise installation without the need for milling keyways on the shaft.
• Conveyor Drums: Stable fastening of drive pulleys in heavy-duty material handling systems.
• Automation and Robotics: Zero-backlash power transmission in systems requiring high positioning accuracy.
• Industrial Gearboxes: Connecting output shafts to flywheels or clutch discs.
• Drive Retrofitting: Enabling the repair of connections on shafts previously damaged at the keyway site.

Technical Specification

• Manufacturer: SCHAEFER (Germany)
• Designation: TAS 130/060/090
• Main Dimensions: 60 mm (ID / d) × 90 mm (OD / D).
• Type: Internal/External Locking Assembly.
• Material: High-strength heat-treated structural steel.

Installation Tip: To achieve the rated load capacity, screws must be tightened gradually in a crosswise pattern using a torque wrench, following SCHAEFER’s specific Nm requirements.

Features and Benefits

• Self-Centering: The assembly ensures high concentricity between the hub and the shaft, minimizing radial run-out.
• High Dynamic Load Rating: Excellent resistance to rapid rotation reversals and mechanical shock loads.
• Easy Adjustment: Allows for unlimited angular and axial positioning before final tightening.
• Zero Backlash: Frictional connection prevents shaft fretting, typical for worn-out keyed joints.
• Efficient Maintenance: Integrated jacking-off threads facilitate quick and non-destructive disassembly.

Why Choose This Product

Opting for the SCHAEFER TAS 130/060/090 locking assembly is an investment in superior drivetrain reliability. Unlike low-quality alternatives, SCHAEFER’s German engineering ensures precision-ground tapers for uniform pressure distribution and shaft safety. By eliminating play and structural weaknesses, this product significantly lowers the total cost of ownership by extending the machine's uptime and reliability.