(FSW) FRICTION STIR WELDING

The Cystir motor spindle and the 2-axis welding head are specifically designed for friction stir welding to create a perfectly fused conjunction between similar and non-similar metals.
As a result, the Cytec friction stir welding technology achieves a perfect
state of plasticity and a strong conjunction between different materials.
CYTEC FSW thump2 1

CYSTIR motor spindle designed specifically for friction stir welding.

Characteristics :
• HSK tool interface with hydromechanical Cytwist tool clamping system
• CyTorque motor (combinable with all common control systems)
• Pre-loaded CyRt hybrid bearing
• Shear force transducers to regulate forces during the welding process
• Rotary union for clamping and release hydraulics

FSW 2025 Tabelle
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CyTec FSW CyStir CyWeld2
wide large profiles
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FSW EADS Flugzeugfenste2
wide large profiles
M21XLFSW tool2 CM

Robust FSW fork head with 6-axis force sensors, high torque, compact design, and advanced cooling for precision welding.

Characteristics :
• HSK tool interface with hydromechanical Cytwist tool clamping system
• CyTorque motor (combinable with all common control systems)
• Pre-loaded hybrid bearing
• Shear force transducers to regulated forces during the welding process
• Rotary feedthrough for clamping and release hydraulics

FSW 2026 31
CYSTIR Spindle Technical Overview

MOTOR SPECIFICATION

CYSTIR Motor Spindle Comparison
Specification CYSTIR 17 kW
Robotic Head
CYSTIR 24 kW
Robotic Head / Forkhead
CYSTIR 42 kW
Forkhead G30
Power (S1/S6) 17 / 20 kW 24 / 31 kW 42 / 53 kW
Torque (S1/S6) 40 / 48 Nm 56 / 73 Nm 400 Nm
Rated Speed 4,000 rpm 4,050 rpm 1,000 rpm
Max Speed 9,000 rpm 5,000 rpm 7,000 rpm
Current (S1/S6) 48 / 57 A 42 / 54 A 200 A

OPERATING DATA

Specification CYSTIR 17 kW CYSTIR 24 kW CYSTIR 42 kW
Max. Axial Load 15 kN 15 kN 40 kN
Max. Radial Load 5 kN 5 kN 20 kN
Weight 88 kg 95 kg 350 kg

CLAMPING SYSTEM

Specification CYSTIR 17 kW CYSTIR 24 kW CYSTIR 42 kW
Tool Interface E63 / A63 HSK HSK-A100 (Ø125)
Clamping Force 22 kN 22 kN 40 kN
Clamping Pressure 55 bar 55 bar 75 bar
Clamping Monitoring CyCon K11 CyCon K11

The Applications Friction Stir Welding

  • Aircraft Engineering

  • Space travel

  • Defense

  • Aircraft industry

  • Automotive industry

  • Fuel tanks

  • Atomizer
  • Aggregate

  • Coil joining

  • Connection of deck plates

  • …and many other production parts in different markets