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Dynamic Sealing Technologies
Custom Multiple-Passage Rotating Unions

DSTI can design a custom multi-port union assembly that will fit into your space envelope, transfer your medias, handle your system pressures & operate at your rotational speeds. Custom designs are available with a number of integrated electrical slip rings for power & data transfer. (read more)


Product Categories for rotating unions for large shaft

Rotary Shafts - (78 companies)

Rotary shafts are elongated, rod-shaped devices that rotate about a longitudinal axis and transmit torque. They are similar in shape to linear shafts, but are designed to withstand torsional forces

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Shaft Collars - (105 companies)

Shaft collars attach to shafts and are used as stop features or targets for devices such as tachometers

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Flexible Shafts - (27 companies)

Flexible shafts provide rotary power transmission along curved or adjustable axes. They are used in a wide variety of remote control, valve actuation, and power transmission applications

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Rotating Biological Contactors - (13 companies)

Rotating biological contactors are large discs on rotating shafts that are mounted in wastewater tanks, but only partly submerged. As the discs turn, the microorganisms on them repeatedly contact both air and the organic substances in the water

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Linear Shafts - (60 companies)

Linear shafts are elongated, rod-shaped devices that provide linear or rotary motion for power transmission applications

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Precision Shafting - (66 companies)

Precision shafting provides the highest degree of overall accuracy, concentricity, straightness and surface perfection attainable in commercial practice.

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Mechanical Feedthroughs - (31 companies)

Mechanical feedthroughs transmit mechanical motion through the walls of a vacuum system. Both linear and rotary feedthroughs are included in this grouping.

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Rigid Couplings - (147 companies)

Rigid couplings connect rotating members such as shafts. They secure onto both members and provide transmission of torque and motion

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Pipe Fittings - (1232 companies)

Pipe fittings include many components that connect pipe ends for in-line, offset, multi-port, and mounting configurations.

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Fluid Feedthroughs - (22 companies)

Fluid feedthroughs use a hermetic seal to transmit fluids through the walls of a pressurized or vacuum system. Devices include nitrogen, air, and water feedthroughs.

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Shaft-hub Locking Devices - (55 companies)

Shaft-hub locking devices frictionally clamp gears, pulleys, flywheels, and other components to a shaft without the need for threads or keys

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Dynamic Seals - (491 companies)

Dynamic seals include oil seals, hydraulic and pneumatic seals, exclusion seals, labyrinth seals, bearing isolators, and piston rings. They create a barrier between moving and stationary surfaces in applications such as rotating shafts and pistons rings.  This is a general search form; more detailed search forms are available. Search by Specification | Learn More

Rotary Encoders, Absolute - (179 companies)

Absolute rotary encoders use optical, mechanical, or magnetic indexing for angular measurement. They do not lose their position after power-down, but instead provide absolute position upon power-up without requiring a home cycle or any shaft rotation

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Gearboxes and Gearheads - (641 companies)

Gearboxes and gearheads are speed reducers that consist of a set of gears, shafts, and bearings in an enclosed housing. In converting inputs to outputs, they reduce RPM and increase torque

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Product Announcements for rotating unions for large shaft
Rotary Systems, Inc.
Custom Rotating Unions, Wafer Processing

The union pictured is a custom multiple passage union that is used in the wafer processing industry. The union is manufactured from stainless steel. (read more)

More product announcements from Rotary Systems, Inc.
Browse Rotary Systems, Inc. Catalog
Browse Rotating Unions Datasheets for Rotary Systems, Inc.
Scott Rotary Seals
Standard Rotating Unions

Scott Rotary Seals offers an extensive range of off the shelf solutions for Rotary Union applications. (read more)

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Dynamic Sealing Technologies
GP Series rotating unions

DSTI offers a complete line of GP Series rotary unions for a wide variery of industrial applications. The GP Series rotary unions are suitable for transferring multiple medias. (read more)

More product announcements from Dynamic Sealing Technologies
Browse Dynamic Sealing Technologies Catalog
Browse Rotating Unions Datasheets for Dynamic Sealing Technologies
Dynamic Sealing Technologies
Custom Multiple-Passage Rotating Unions

DSTI can design a custom multi-port union assembly that will fit into your space envelope, transfer your medias, handle your system pressures & operate at your rotational speeds. Custom designs are available with a number of integrated electrical slip rings for power & data transfer. (read more)

More product announcements from Dynamic Sealing Technologies
Browse Dynamic Sealing Technologies Catalog
Browse Rotating Unions Datasheets for Dynamic Sealing Technologies
Dynamic Sealing Technologies
Large Custom Rotary Union-Hazardous Gas Transfer

Dynamic Sealing Technologies recently delivered a large custom rotary union designed for hazardous gas transfer. This custom union features a coaxial supply/return line configuration, with 5" flow passages. This unit was designed for low pressure, high volume transfer of hazardous gasses created during a manufacturing process. (read more)

More product announcements from Dynamic Sealing Technologies
Browse Dynamic Sealing Technologies Catalog
Browse Rotating Unions Datasheets for Dynamic Sealing Technologies
Dynamic Sealing Technologies
Over-Shaft Mounted Rotary Union Assemblies

DSTI offers many custom rotary union designs for feeding medias directly into rotating shafts. The experienced Engineering staff will design a custom rotating union to fit a specific shaft size; large diameter versions are available. (read more)

More product announcements from Dynamic Sealing Technologies
Browse Dynamic Sealing Technologies Catalog
Browse Rotating Unions Datasheets for Dynamic Sealing Technologies
Rotary Systems, Inc.
Large Custom 3 passage union for Industrial crane

3 passage rotary union for crane application. This union is designed with large bearing support to withstand high side loading. (read more)

More product announcements from Rotary Systems, Inc.
Browse Rotary Systems, Inc. Catalog
Browse Rotating Unions Datasheets for Rotary Systems, Inc.
Deublin Co.
What is a Rotating Union?

A Rotating Union is a precision mechanical device used to transfer fluid from a stationary source, such as a supply pipe, into a rotating piece of machinery. (read more)

More product announcements from Deublin Co.
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Rotary Systems, Inc.
Workholding Rotary Unions

Rotary Systems' new line of work-holding unions are available in two, four and six passage models. These unions are designed with #4 SAE threads on both the radial and axial locations on the shaft and in the housing. These unions are a direct retro-fit to other work-holding and clamping suppliers that provide these unions in their fixtures. (read more)

More product announcements from Rotary Systems, Inc.
Browse Rotary Systems, Inc. Catalog
Browse Rotating Unions Datasheets for Rotary Systems, Inc.
Dynamic Sealing Technologies
Large Custom Rotary Union Assemblies

DSTI specializes in large, custom rotary union assemblies. Custom rotary unions with 30"+ through bores, high flow volumes, 20+ passages, and more can be designed to exactly match each application. (read more)

More product announcements from Dynamic Sealing Technologies
Browse Dynamic Sealing Technologies Catalog
Browse Rotating Unions Datasheets for Dynamic Sealing Technologies
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See Dynamic Sealing Technologies Profile & Catalog
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See Duff-Norton Information
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