Air rotary union LHS078-4Q

for compressed air3-passagefor pneumatic applications

Short Description:
Three-passage pneumatic rotary union Model LHS078-4Q designed for winding equipment. Features a 6061-T6 red anodized aluminum housing, 12L14 black oxide steel rotor/shaft and a center through bore for shaft or wiring pass-through. Typical application: shop air transmission during rotation at moderate speeds.

Key Features:

• Independent 3-passage design with fully isolated internal fluid passages to prevent cross-talk.
• Materials: 6061-T6 red anodized aluminum housing; 12L14 black oxide steel rotor/shaft.
• Center through bore (Ø 3.060") for shaft or cable routing and flange mounting.
• Designed for reliable pneumatic transmission under rotation; includes 2 weep holes for seal monitoring.
• Not a 1-in-3-out manifold; each passage is separately sealed.

Product Overview:
This LHS078-4Q rotary union is engineered for industrial winding applications where stable compressed-air delivery is required while the assembly rotates. The internal passages are isolated to maintain channel integrity and to allow safe visual monitoring of seal condition via weep holes.

Core Features:

• Three radial side ports: 3 × 1/8"-27 NPT, spaced 120° apart.
• One axial face port: 1 × 1/4"-18 NPT.
• Housing: 6061-T6 aluminum with red anodize finish.
• Rotor/Shaft: 12L14 steel, black oxide, hardness approx. Rc 56–62.
• Center through bore diameter: Ø 3.060" for shaft or wiring pass-through.
• Two weep holes for real-time internal seal monitoring.
• Flange face: 4 × 3/8-16 UNC mounting screw holes.

Technical Parameters:
Model: LHS078-4Q. Passages: 3 independent passages with separate sealing. Media: Filtered shop air (no abrasive contaminants). Working pressure: 80–220 PSI (≈ ≤ 2 MPa). Max speed: 200 RPM (typical 150 RPM). Operating temperature: 4–66 °C (40–105 °F). Mounting: Flange with 4 × 3/8-16 UNC screw holes. Application: Indoor manufacturing, winding equipment.

Technical Specifications:

• Model: LHS078-4Q
• Passages: 3 independent (separate sealing)
• Radial ports: 3 × 1/8"-27 NPT, 120° apart
• Axial port: 1 × 1/4"-18 NPT
• Center through bore: Ø 3.060"
• Housing: 6061-T6 aluminum, red anodized
• Rotor/Shaft: 12L14 steel, black oxide, hardness approx. Rc 56–62
• Working pressure: 80–220 PSI (≈ ≤ 2 MPa)
• Max speed: 200 RPM (typical 150 RPM)
• Operating temperature: 4–66 °C (40–105 °F)
• Mounting: Flange with 4 × 3/8-16 UNC screw holes
• Safety: 2 weep holes for internal seal monitoring
• Media requirements: Filtered shop air, free of abrasive contaminants