Multiple Pass

Description; 

The RJ-1230 Multiple Pass Rotary Joint is engineered to transfer multiple independent media streams through a rotating interface without cross-leakage between passages. Its multi-channel construction allows hydraulic oil, pneumatic air, coolant, water-glycol, or low-viscosity process fluids to pass through stationary piping into rotating shafts, indexing tables, reels, drums, and automated machinery. 

 

Designed for industrial duty, the RJ-1230 is suitable for continuous or intermittent rotation where compact installation, stable sealing, and reliable media separation are required. The joint can be configured with precision-machined flow passages, wear-resistant sealing elements, and corrosion-resistant hardware for automation systems, machine tools, steel processing equipment, paper converting machinery, and rotary fixtures. 

 

Technical Key Features; 

• Suitable for continuous, indexing, or oscillating rotational motion. 

• Optional stainless-steel construction for wet, corrosive, or washdown environments. 

• Available with threaded, flanged, or custom port connections to suit machine layouts. 

• Serviceable design supports planned maintenance and reduced equipment downtime. 

• Compact rotary interface reduces hose twisting, pipe stress, and external routing complexity. 

• Multi-passage design enables independent transfer of hydraulic, pneumatic, coolant, and utility circuits. 

• Precision sealing arrangement minimizes internal bypass and prevents cross-contamination between passages. 

 

Service Overview; 

Parameter	Value
Equipment	Rotary tables, indexing fixtures, reels, drums, machine tools, hydraulic rotary equipment
Fluid	Hydraulic oil, compressed air, coolant, water, water-glycol, low-viscosity utility fluids
Service Nature	Multi-media transfer through rotating shafts or rotating assemblies
Operating Mode	Continuous rotation, intermittent indexing, or oscillating service

 

Specifications; 

Item	Min	Max	Typical / Notes
Size	6 mm (0.250”)	50 mm (2.000”)	Passage size and port connection are configurable
Pressure	Vacuum / low pressure	100 bar (1,450 psi)	Depends on media, seal design, speed, and port size
Temperature	-20°C (-4°F)	+120°C (+248°F)	Higher temperature options with FKM/PTFE sealing
Speed	—	1,500 RPM	Speed rating depends on size, pressure, and media lubrication

 

Materials; 

Component	Standard Material	Optional Material	Comment
Housing / Body	Carbon Steel / Aluminum Alloy	SS 304 / SS 316	Selected based on corrosion and weight requirements
Rotor / Shaft	Hardened Steel	SS 304 / SS 316 / Hard-Chrome Plated Steel	Precision-finished sealing surface for stable operation
Dynamic Seals	NBR / PTFE Composite	FKM / EPDM / Filled PTFE	Selected according to fluid and temperature compatibility
Static Seals	NBR	FKM / EPDM / PTFE Encapsulated	For hydraulic, pneumatic, coolant, or chemical service
Bearings / Support Bushes	Carbon / Bronze / Polymer Composite	Stainless Steel / Specialty Bush Materials	Based on load, speed, and lubrication condition

 

 

 

Applications; 

• CNC machine tools and machining centers. 

• Paper, textile, and film converting machinery. 

• Hydraulic rotary fixtures and clamping systems. 

• Industrial automation and rotary indexing systems. 

• Test rigs, rotary manipulators, and custom OEM machinery. 

• Packaging machinery with rotating drums or turret systems. 

• Steel processing lines, coil handling equipment, and roll systems. 

• Coolant, air, and hydraulic transfer in rotating production equipment. 

 

Operating Limits; 

Parameter	Value
Pressure	Up to 100 bar (1,450 psi)
Temperature	-20°C to +120°C (-4°F to +248°F)
Speed	Up to 1,500 RPM
Size Range	6 mm to 50 mm (0.250” to 2.000”)

 

Selection Note; 

Operating limits and materials are inferred for a standard industrial multiple-pass rotary joint. Final ratings should be verified against actual passage count, media, port size, duty cycle, speed, pressure, and installation orientation before release for manufacturing or catalogue publication.