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

Selected dimensions for this product
A
M12x1.25 LH
B
3/8"-18 NPT
C
50.8 mm
D1
97 mm
E
38.5 mm
F
17 mm
G
6 mm
H
18 mm
I
14 mm
J
79.7 mm
L
22.225 mm
P
Non-Threaded
X
4.9 mm

Operating Specifications

Recommended operating limits for pressure and speed
Media
Coolant, MQL
Rotor Connection
M12x1.25 LH
Supply Connection
3/8"-18 NPT
Coolant Max. Flow
38.6 l/min
Coolant Max. Pressure
140 bar
Coolant Max. Temperature
71 °C
MQL Max. Flow
2040 l/min
MQL Max. Pressure
10 bar
MQL Max. Temperature
71 °C

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