TAS130/070/110 SCHAEFER compression-expansion ring

SCHAEFER TAS 130/070/110 Locking Assembly

The SCHAEFER TAS 130/070/110 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 70 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 130/070/110
• Main Dimensions: 70 mm (ID / d) × 110 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: 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 130/070/110 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.