Union, Bearingless Pop-Off, M12x1.25 LH, 14 mm pilot, 3/8" PT
1129-039-327
- Single passage for coolant or MQL
- 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 swarf or debris
- Balanced mechanical seals made from silicon carbide for long life even under difficult operating conditions
- Anodized aluminum housing resists corrosion
Dimensions
A
M12x1.25 LHM12x1.25 LH
B
3/8"-19 PT3/8"-19 PT
C
53.975 mm2.125 "
D1
94.183 mm3.708 "
E
37.25 mm1.467 "
F
16.967 mm0.668 "
G
5.994 mm0.236 "
H
18 mm0.709 "
I
14 mm0.551 "
J
16.967 mm0.668 "
L
25 mm0.984 "
P
Non-ThreadedNon-Threaded
X
4.902 mm0.193 "
Operating Specifications
Media
Coolant, MQLCoolant, MQL
Rotor Connection
M12x1.25 LH M12x1.25 LH
Supply Connection
3/8"-19 PT 3/8"-19 PT
Coolant Max. Flow
28 l/min7.4 GPM
Coolant Max. Pressure
140 bar2030 psi
Coolant Max. Temperature
71 °C160 °F
MQL Max. Flow
608 l/min21.5 CFM
MQL Max. Pressure
10 bar150 psi
MQL Max. Temperature
71 °C160 °F
Documents & Resources
Installation Guide
Installation Guide for Externally mounted Bearingless unions
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools