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G rotary unions are high performance, high precision rotary unions for coolant, air, hydraulic and cutting oil applications. G rotary unions are generally applied to the machine tool industry. 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 G rotary unions can provide years of reliable service for coolant, air, and hydraulic oil applications. • Standard and customised designs • Full...

Our Standard & Custom Solutions G-Type GA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 G-Type GAI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 G-Type GFR/GFRA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 G-Type GFL/GFLA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Consult factory for additional thread type, dimensions in millimeters. For reference only and subject to change. Overview • Precision ball bearings lubricated for life • Hardened stainless steel rotor • Optimised seal balance ratio for minimal friction • Smooth running, no vibration • Body available in anodised aluminium or brass • Possibility of customised tests on customer's parameters • No leakage during tool change

+ Dimension tolerance is +0,31 +0,4, dimensions in millimeters. For reference only and subject to change. Overview • Compact design mounted inside shaft • Hardened stainless steel rotor • Optimised seal balance ratio for minimal friction • Available with non-contracting seal ring with hydrodynamic grooves • Anodised aluminium body

AXIAL INLET Dimensions in millimeters. For reference only and subject to change. Overview • Labyrinth seal and drain holes protect bearings • Optimised seal balance ratio • Silicon carbide seal faces resist wear and thermal shock • Precision ball bearings eliminate vibration • Anodised aluminium body • Full flow area, minimal pressure drop • Stainless steel spring located outside the flow • Stainless steel rotor resists corrosion • No leakage during tool change

RADIAL INLET Overview • Special seal design permits dry running • Optimised seal balance ratio for minimal friction • Precision angular contact bearings widely spaced to eliminate wobble and vibration • Labyrinth seal and drain holes protect bearings • Anodised aluminium body • Reduced coolant misting for improved air quality • No leakage during tool change commutation • Low vibration for precise machining • Also available for rotation with compressed air • Supplied with bearings run-in upon request • Closing ring suitable for proximity sensing draw bar position

Dimensions in millimeters. For reference only and subject to change. See page 18 for spindle detail Overview • Special seal design permits dry running • Low heat generation in bearings and mechanical seal • Optimised seal balance ratio for minimal friction • High precision angular contact bearings eliminate wobble and vibration • Labyrinth seal and drain holes protect bearings • Anodised aluminium body • Reduced coolant misting for improved air quality • No leakage during tool change commutation • Low vibration for precise machining • Also available for rotation with compressed air • Supplied...

AXIAL INLET Dimensions in millimeters. For reference only and subject to change. See page 18 for spindle detail Overview • Labyrinth seal and drain holes protect bearing • Full flow area, minimal pressure drop • Optimised seal balance ratio • Silicon carbide seal faces resist wear and thermal shock • Multiple stainless steel springs located outside the flow • Stainless steel rotor resists corrosion • Angular ball bearing design resists side loading • Low vibration for precise machining Closing ring suitable for proximity sensing draw bar position • Anodised aluminium body

Type AB C D E F GHLMPQRS Weight Lb (Kg) Type AB C D E F GHLMPQRS Weight Lb (Kg) Dimensions in millimeters. For reference only and subject to change. Overview Special seal design permits dry running • Long drawbar stroke for maximum flexibility Labyrinth seal and drain holes protect bearings Optimise seal balance ratio for minimal friction Anodised aluminium body Full flow area, minimal pressure drop Stainless steel rotor resist corrosion • No leakage during tool change commutation • Large drain holes to evacuate coolant from the union • Supplied with bearings run-in upon request • Stainless steel...

AXIAL INLET Fluid * with Ceramic Bearings Dimensions in millimeters. For reference only and subject to change. Overview Special seal design permits dry running Labyrinth seal and drain holes protect bearings Optimised seal balance ratio High precision angular contact bearings for high- Anodised aluminium body Full flow area, minimal pressure drop Long drawbar stroke for maximum flexibility Seal to protect bearings for air pressure in rotor area Low heat generation in bearings and mechanical seal No leakage during tool change commutation Large drain holes to evacuate coolant from the union Supplied...

* with Ceramic Bearings Overview • Special seal design permits dry running • Labyrinth seal and drain holes protect bearings • Optimised seal balance ratio • High-precision angular contact bearings for high-speeds • Anodised aluminium body • Long drawbar stroke for maximum flexibility • Low heat generation in bearings and mechanical seal • No leakage during tool change commutation • Large drain holes to evacuate coolant from the union • Supplied with bearings run-in upon request • Full flow area, minimal pressure drop