Union, Bearingless Pop-Off, M12x1.25 LH, 14 mm pilot, 3/8" PT
1129-033-327
- 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
54 mm2.126 "
D1
95.7 mm3.768 "
E
37 mm1.457 "
F
17 mm0.669 "
G
6 mm0.236 "
H
18 mm0.709 "
I
14 mm0.551 "
J
59.8 mm2.354 "
K
3/8"-19 PT3/8"-19 PT
P
Non-ThreadedNon-Threaded
X
4.9 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
24.3 l/min6.4 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
Interface Drawing
Interface Control drawing for 1129-033-327
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools