Union, Bearingless Pop-Off, M16x1.5 LH, 18 mm pilot, 3/8" PT
1121-300-345
- Single passage for coolant or MQL
- Pop-Off™ technology allows unlimited dry running without media pressure
- Ultra-short 0.1 mm pop-off stroke restricts drainage of residual coolant during tool change
- 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
98 mm3.858 "
E
40.9 mm1.61 "
F
16 mm0.63 "
G
8.5 mm0.335 "
H
21 mm0.827 "
I
17.993 mm0.708 "
J
65 mm2.559 "
K
3/8"-19 PT3/8"-19 PT
P
Non-ThreadedNon-Threaded
X
5 mm0.197 "
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
25.7 l/min6.8 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 1121-300-345
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools