Union, Pop-Off, Female Hex, 13 mm pilot, G 3/8"
902-253-220
- Single passage for coolant or MQL
- Pop-Off™ technology allows unlimited dry running without media pressure
- Full-flow design has no obstructions to trap swarf or debris
- Bearing-supported with threaded rotor for easy installation
- Deep groove radial ball bearings for smooth operation
- 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 housing resists corrosion
Dimensions
A
Female HexFemale Hex
B
G 3/8"-19G 3/8"-19
C
46.8 mm1.843 "
D1
138.8 mm5.465 "
E
33.5 mm1.319 "
G
8.71 mm0.343 "
I
13.043 mm0.514 "
J
90 mm3.543 "
P
G 1/4"-19G 1/4"-19
X
20 mm0.787 "
Operating Specifications
Media
Coolant, MQLCoolant, MQL
Rotor Connection
Female Hex Female Hex
Supply Connection
G 3/8"-19 G 3/8"-19
Coolant Max. Flow
30 l/min7.9 GPM
Coolant Max. Pressure
69 bar1000 psi
Coolant 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 for Bore-Mounted unions
Interface Drawing
Interface Control drawing for 902-253-220
Operating Manual
Operating Manual for "Pop-Off" unions for machine tools