TAS3073/60 SCHAEFER compression-expansion ring

SCHAEFER TAS 3073/60 Locking Assembly

The SCHAEFER TAS 3073/60 is a high-precision mechanical fastener designed to create a rigid, backlash-free frictional connection between a shaft and a hub. Engineered for 60 mm shafts, it operates on a double-taper principle: tightening the integrated screws generates radial pressure, expanding the ring into the hub and contracting it onto the shaft. This model is characterized by excellent self-centering properties, making it ideal for high-speed applications where run-out minimization is critical.

Application

• Pulley and Gear Mounting: Precise seating without the need for milling keyways on the shaft.
• Industrial Automation: Backlash-free power transmission in systems with high dynamics and frequent reversals.
• Gearboxes and Gear Motors: Connecting output shafts to functional machine elements.
• Rigid Couplings: Building durable shaft-to-shaft connections with high concentricity.
• Machine Retrofitting: Enabling the repair of connections on shafts previously damaged at the keyway site.

Technical Specification

• Manufacturer: SCHAEFER (Germany)
• Designation: TAS 3073/60
• Shaft Diameter (d): 60 mm
• Type: Internal/External Locking Assembly.
• Design: Self-centering with high rotational accuracy.

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

Features and Benefits

• Elimination of Notch Effect: Keyless mounting increases shaft fatigue strength and allows for higher power transmission.
• High Torsional Stiffness: Frictional contact across the entire surface ensures zero rotational play.
• Easy Positioning Adjustment: Allows for infinite angular and axial positioning before final tightening.
• Fretting Corrosion Protection: Solid clamping prevents micro-movements between hub and shaft.
• Fast Disassembly: Integrated jacking-off threads facilitate easy release during maintenance.

Why Choose This Product

Choosing the SCHAEFER TAS 3073/60 locking assembly is an investment in the superior performance of your drive train. Unlike traditional keyed joints, SCHAEFER locking assemblies do not damage the shaft surface and allow for multiple reinstallations. This solution drastically reduces operational costs by eliminating failures caused by loose drive components or shaft fatigue cracks.