Union, Bearingless Pop-Off, M8x0.5 LH, 9 mm pilot, G 3/8"
1121-254-255
- 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
M8x0.5 LHM8x0.5 LH
B
G 3/8"-19G 3/8"-19
C
59.1 mm2.327 "
D1
88.3 mm3.476 "
E
24 mm0.945 "
G
4.2 mm0.165 "
I
9.022 mm0.355 "
J
63.8 mm2.512 "
L
22 mm0.866 "
P
M5x0.8M5x0.8
X
21.5 mm0.846 "
Operating Specifications
Media
Coolant, MQLCoolant, MQL
Rotor Connection
M8x0.5 LH M8x0.5 LH
Supply Connection
G 3/8"-19 G 3/8"-19
Coolant Max. Flow
24.3 l/min6.4 GPM
Coolant Max. Pressure
140 bar2030 psi
Coolant Max. Temperature
71 °C160 °F
MQL Max. Flow
476 l/min16.8 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 1121-254-255
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools