background image

Instruction Manual  

for 

DEUBLIN

 Bore-Mounted  

Two-Channel Rotating Unions 

Model/Series: 

1112-240-001

 

Number:  
Release: 275 V 

 

 

 

Page 3 of 11

DEUBLIN Company • 2050 Norman Drive • Waukegan IL 60085-6747 USA •  +1-847-689-8600 • 

 +1-847-689-8690 • 

 

[email protected]

 

 

Dimensions 

 

 

Operating Parameters 

 
The 

inner

 channel of 1112-240-001 uses 

DEUBLIN

 patented Pop-Off™ seal technology.  This kind of seal 

closes only when pressure is applied.  When pressure is removed, the seal faces separate by a very small 
distance.  This eliminates friction and seal wear during operation without coolant, and therefore allows 
unlimited “dry running” at high speeds.  Pop-Off™ designs should be considered when machining will occur 
with and without through-spindle coolant (TSC).  Because the seals separate during tool changes, when 
coolant pressure is off, residual coolant in the supply hose and spindle can drain past the seal faces.  Therefore, 
a Pop-Off™ union requires a downward-pointing drain line to direct such residual coolant into the sump.  
Pop-Off™ seals are not intended for rotation with pressurized dry air. 
 
The 

outer

 channel of 1112-240-001 uses 

DEUBLIN

 patented AutoSense™ seal technology.  Like pop-off 

designs, AutoSense seals close when coolant pressure is applied to contain the coolant fluid, and “pop” apart 
in the absence of coolant pressure to allow unlimited dry running.  In addition, AutoSense seals handle 
pressurized dry air by creating a microscopic gap between the seal faces.  AutoSense unions handle coolant, 
MQL, and dry air, by sensing the kind of media and automatically changing seal operation in response.  As 
with pop-off seals, a drain line is required. 

Summary of Contents for 1112-240-001

Page 1: ...Waukegan Illinois 60085 6747 U S A 1 847 689 8600 1 847 689 8690 CustomerService deublin com http www deublin com ROTATING UNIONS Instruction Manual 1112 240 001 Two Channel Bore Mounted Rotating Unio...

Page 2: ...vs Pressure 4 Media Filtration 5 Interface with Machine 5 Installation Procedure 6 Installation Diagram 8 Preventing Premature Seal Failure 9 Troubleshooting 9 Maintenance 11 Warranty 11 Important Not...

Page 3: ...spindle coolant TSC Because the seals separate during tool changes when coolant pressure is off residual coolant in the supply hose and spindle can drain past the seal faces Therefore a Pop Off union...

Page 4: ...on drawbar as a function of media pressure 5 02 N bar Maximum operating temperature 71 C 160 F Minimum operating temperature 5 C 41 F Chart A Speed vs Pressure 0 20 40 60 80 100 120 140 0 5 000 10 000...

Page 5: ...e used to make up for coolant evaporation Calcium and magnesium salts in most tap water shorten coolant life by depleting the chemicals in the coolant by breaking down the water oil emulsion and by en...

Page 6: ...0 mm then adjust the drawbar extension to minimize runout 2 Make sure that shaft seals in union are clean GENTLY remove any visible contaminants then lubricate both shaft seals in the union rotor with...

Page 7: ...two drain connections MUST point straight down to 6 o clock In a vertical installation orientation of the drain connections is not critical Fix union in place with 2 mounting tabs and 2 M6 socket hea...

Page 8: ...e rotating union such as buzzing rattling or squealing Increase spindle speed in steps according to the spindle manufacturer s recommendation until the maximum operating speed is achieved If unusual n...

Page 9: ...le if air for cleaning the tool taper blows through the spindle and trapped pressure is not released after the tool change The union should be replaced immediately Union makes a loud buzzing or rattli...

Page 10: ...n com Problem Solution The lance is blocked due to either a malfunctioning internal check valve debris trapped in the flow path or a damaged nozzle Replace the lance Coolant output at the spindle nose...

Page 11: ...of which might be defective There are no warranties which extend beyond the description contained under this heading express or implied including warranties of fitness for a particular purpose Importa...

Reviews: