Union, Pop-Off, Rectangle-Drive, 12 mm pilot, G 3/8"
1109-770-644
- Single passage for coolant or MQL
- Pop-Off™ technology allows unlimited dry running without media pressure
- Allows axial drawbar movement up to 19 mm
- Full-flow design has no obstructions to trap swarf or debris
- Bore-mounted design for easy installation
- Matched, ISO class P4 hybrid ball bearings for smooth operation at high speeds
- Labyrinth system and large vents to protect ball bearings
- Balanced mechanical seals made from silicon carbide for long life even under difficult operating conditions
- Anodized aluminum and stainless steel parts resist corrosion
Dimensions
A
Rectangle-DriveRectangle-Drive
B
G 3/8"-19G 3/8"-19
C
80 mm3.15 "
D1
143 mm5.63 "
E
50 mm1.969 "
F
32 mm1.26 "
G
8.5 mm0.335 "
H
14 mm0.551 "
I
11.984 mm0.472 "
J
115 mm4.528 "
L
50.5 mm1.988 "
P
G 1/4"-19G 1/4"-19
X
16 mm0.63 "
Operating Specifications
Media
Coolant, Cutting Oil, MQLCoolant, Cutting Oil, MQL
Rotor Connection
Rectangle-Drive Rectangle-Drive
Supply Connection
G 3/8"-19 G 3/8"-19
Coolant Max. Flow
81.8 l/min21.6 GPM
Coolant Max. Pressure
140 bar2030 psi
Coolant Max. Temperature
71 °C160 °F
Cutting Oil Max. Flow
81.8 l/min21.6 GPM
Cutting Oil Max. Pressure
150 bar2030 psi
Cutting Oil Max. Temperature
71 °C160 °F
MQL Max. Flow
2040 l/min72.1 CFM
MQL Max. Pressure
10 bar150 psi
MQL Max. Temperature
71 °C160 °F
Documents & Resources
Installation Guide
Installation Guide, Bore Mount (Chinese)
Interface Drawing
Interface Control drawing for 1109-770-644
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools