Union, Bearingless Pop-Off, M16x1.5 LH, 18 mm pilot, 3/8" PT
1129-039-301
- 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
M16x1.5 LHM16x1.5 LH
B
3/8"-19 PT3/8"-19 PT
C
54 mm2.126 "
D1
97 mm3.819 "
E
40 mm1.575 "
F
15.9 mm0.626 "
G
8.7 mm0.343 "
H
23.8 mm0.937 "
I
17.993 mm0.708 "
J
81 mm3.189 "
L
25 mm0.984 "
P
Non-ThreadedNon-Threaded
X
4.8 mm0.189 "
Operating Specifications
Media
Coolant, MQLCoolant, MQL
Rotor Connection
M16x1.5 LH M16x1.5 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 1129-039-301
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools