G™ Rotary Unions
20Pages

For coolant, water, oil, and air service KADANT AN ACCENT ON INNOVATION Precision rotary unions for more effective cooling and lubrication. High speed rotating unions for transferring fluids and air

Contents G™ Rotary Union Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 GA General Purpose Air and Hydraulic Rotary Unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 GAI Internal Mounted Rotary Unions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 GFR/GFRA Coolant Rotary Unions for Dry Running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 GFL/GFLA...

Overview The G rotary union is a high performance, high precision rotary union for coolant, water, air, and hydraulic oil applications. The G rotary unions are generally applied to the machine tool industry for: u Transfer lines u Rotary index tables Based on decades of mechanical seal design and application expertise, the G rotary union line is built to perform under the most demanding conditions. A thorough understanding of seal load optimization, seal wear characteristics, and application knowledge means the G rotary union can provide years of reliable service for coolant, water, air,...

Consult factory for additional thread type Features and Benefits u Precision ball bearings lubricated for life u Body available in anodized aluminum or brass u Hardened stainless steel rotor u Stationary seal face available in carbon graphite, bronze u Optimized seal balance ratio for minimal friction seal face for hydraulic oil above 1,000 psi

Features and Benefits u Compact design mounted inside shaft u Available with non-contacting seal ring with u Hardened stainless steel rotor hydrodynamic gi-°°ves u Optimized seal balance ratio for minimal friction u Anodized aluminum body

*C and X in mm for metric threads Rotary Union Type GFR-GFRA PV Diagram Features and Benefits u Special seal design permits dry running u Labyrinth seal and drain holes protect bearings u Optimized seal balance ratio u Silicon carbide seal faces resist wear and thermal shock u Precision ball bearings eliminate vibration u Anodized aluminum body u Full flow area, minimal pressure drop u Stainless steel springs located outside the flow u Stainless steel rotor resists corrosion u No leakage during tool change

Features and Benefits u Special seal design permits dry running u Optimized seal balance ratio for minimal friction u Precision angular contact bearings widely spaced to eliminate wobble and vibration u Labyrinth seal and drain holes protect bearings u Anodized aluminum body u Reduced coolant misting for improved air quality u Low heat generation in bearings and mechanical seal u No leakage during tool change commutation u Low vibration for precise machining u Also available for rotation with compressed air u Supplied with bearings run-in upon request u Closing ring suitable for proximity...

*C and X in mm for metric threads Rotary Union Type GFS-GFSA PV Diagram Features and Benefits u Special seal design permits dry running u Optimized seal balance ratio for minimal friction u High precision angular contact bearings eliminate wobble and vibration u Labyrinth seal and drain holes protect bearings u Anodized aluminum body u High speed, dry run applications u Reduced coolant misting for improved air quality u Low heat generation in bearings and mechanical seal u No leakage during tool change commutation u Low vibration for precise machining u Also available for rotation with...

Features and Benefits u Labyrinth seal and drain holes protect bearings u Optimized seal balance ratio u Silicon carbide seal faces resist wear and thermal shock u Angular ball bearing design resists side loading u Low vibration for precise machining u Anodized aluminum body u Full flow area, minimal pressure drop u Multiple stainless steel springs located outside the flow u Stainless steel rotor resists corrosion u Closing ring suitable for proximity sensing drawbar position

Features and Benefits u Stainless steel rotor u Labyrinth seal between bearing and mechanical seals for longer lifetime and safety u Rigid bearing installation for safety u Optimized seal balance for minimal friction u Stainless steel and aluminum body u All materials in contact with medium are non-corrosive u Stainless steel springs lo

Features and Benefits u Two channel rotary union u High speed for specific machine tool applications u Dry running capable (consult factory) u Aluminum body u Stainless steel rotor u Flanged connection for stable operation and long life u Drain connection between passages for separation of media u Also available for rotation with compressed air

Rotary Union Type GHP-GHPA PV Diagram Features and Benefits u Special seal design permits dry running u Labyrinth seal and drain holes protect bearings u Optimized seal balance ratio u High precision angular contact bearings for high speeds u Anodized aluminum body u Full flow area, minimal pressure drop u Long drawbar stroke for maximum flexibility u Low heat generation in bearings and mechanical seal u No leakage during tool change commutation u Large drain holes to evacuate coolant from the rotary union u Supplied with bearings run-in upon request u Stainless steel springs located...

Features and Benefits u Special seal design permits dry running u Labyrinth seal and drain holes protect bearings u Optimized seal balance ratio u High precision angular contact bearings for high speeds u Anodized aluminum body u Full flow area, minimal pressure drop u Long drawbar stroke for maximum flexibility u Seal to protect bearings for air pressure in rotor area u Low heat generation in bearings and mechanical seal u No leakage during tool change commutation u Large drain holes to evacuate coolant from the rotary union u Supplied with bearings run-in upon request