TAS3003/040/065 H SCHAEFER compression-expansion ring

SCHAEFER TAS 3003/040/065 H Locking Assembly

The SCHAEFER TAS 3003/040/065 H is a high-precision locking device 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 40 mm diameter shaft. By utilizing a keyless design, this component eliminates stress concentrations (notch effect), drastically increasing the overall fatigue strength of the drive train.

Application

• Pulley and Gear Mounting: Precise seating without the need for milling keyways on the shaft.
• Industrial Automation: Backlash-free power transmission in systems requiring high dynamics and frequent reversals.
• Gearboxes and Gear Motors: Connecting output shafts to machine functional elements.
• Servo Drives: Ideal where angular precision and zero play are critical.
• Drive Retrofitting: Perfect for repairing connections on shafts with damaged or worn-out keyways.

Technical Specification

• Manufacturer: SCHAEFER (Germany)
• Designation: TAS 3003/040/065 H
• Dimensions: 40 mm (ID / d) × 65 mm (OD / D).
• Type: Frictional Locking Assembly.
• Mechanism: Self-centering, screw-actuated clamping.

Installation Tip: To achieve full load capacity, screws must be tightened gradually and evenly using a torque wrench, following the Nm values specified by SCHAEFER.

Features and Benefits

• High Centering Accuracy: Minimizes radial run-out of the mounted components.
• Shaft Integrity: Keyless mounting preserves shaft cross-section, allowing for higher power transmission.
• Vibration Resistance: The frictional joint does not loosen under dynamic vibrations or shock loads.
• Easy Adjustment: Allows for infinite angular positioning of the element on the shaft before final tightening.
• Simple Disassembly: Integrated jacking-off threads allow for quick release during maintenance.

Why Choose This Product

Opting for the SCHAEFER TAS 3003/040/065 H locking assembly is an investment in superior machine performance. German engineering precision ensures the connection withstands the most demanding industrial cycles. By eliminating backlash and stress concentrators, this product significantly lowers maintenance costs, protecting shafts from fatigue cracks and preventing common failures associated with traditional keyed joints.