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1129 Series 1129-205-201 Rotary Union for Coolant

A coolant rotary joint for machining centers is a critical component designed to facilitate the seamless transfer of cooling fluids to rotating parts, such as spindles or tool holders, during high-speed machining operations. It ensures efficient cooling and lubrication, enhancing tool life and machining precision. The rotary joint features a robust construction with precision-engineered seals to prevent leaks and withstand high pressures and temperatures. Its compact design allows for easy integration into various machining setups, making it essential for maintaining optimal performance and productivity in CNC machining environments.
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  • 1129-205-201

  • FUXUAN

Parameters of coolant rotary joint

ParameterValue/Specification
MediaWater-based Coolant

MQL (oil mist) up to 10 bar (145 psi)
FiltrationISO 4406 Class 17/15/12, max. 60 micron
Maximum Speed30,000 min⁻¹ (30,000 rpm) Standard

40,000 min⁻¹ (46,000 rpm) High Pressure (HP)
Maximum Pressure140 bar (2,030 psi)
Maximum Flow24.3 l/min (6.4 gpm)
1129-016-30153.0 l/min (14.0 gpm)
Maximum Temperature160°F (71°C)

Features of coolant rotary joint

  • Single passage for coolant or MQL

  • Patented Pop-Off™ technology allows unlimited dry running without media pressure

  • Pop-Off stroke of 0.7-3.0 mm compensates for thermal expansion of spindle during extended operation as well as variations in drawbar position

  • Full-flow design has no obstructions to trap chips or debris

  • Balanced mechanical seals made from silicon carbide for long life even under difficult operating conditions

  • Anodized aluminum housing resists corrosion


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