Union, Bearingless Closed-Seal, M12x1.25 LH, 14 mm pilot, 3/8" NPT
1117-002-337
- Single passage for coolant or MQL
- Closed seals for transfer line and similar applications
- 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
- Compact size can be adapted for custom installations
- Anodized aluminum housing resists corrosion
Dimensions

A
M12x1.25 LHM12x1.25 LH
B
3/8"-18 NPT3/8"-18 NPT
C
50.8 mm2 "
D1
97 mm3.819 "
E
38.5 mm1.516 "
F
17 mm0.669 "
G
6 mm0.236 "
H
18 mm0.709 "
I
14 mm0.551 "
J
79.7 mm3.138 "
L
22.225 mm0.875 "
P
Non-ThreadedNon-Threaded
X
4.9 mm0.193 "
Operating Specifications


Media
Coolant, MQLCoolant, MQL
Rotor Connection
M12x1.25 LH M12x1.25 LH
Supply Connection
3/8"-18 NPT 3/8"-18 NPT
Coolant Max. Flow
38.6 l/min10.2 GPM
Coolant Max. Pressure
140 bar2030 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 Externally mounted Bearingless unions
Interface Drawing
Interface Control drawing for 1117-002-337
Operating Manual
Operating Manual for "Closed Seal" unions for machine tools