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DUFF-NORTONCast Iron Rotating Joints & Unions

DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages

The DUFF-NORTON Rotary Union is a straight, plain cast iron rotating joint with 2 passages and a 1-1/2" threaded rotating shaft (MPN 440146C). It features a carbon graphite seal and a maximum speed of 700 rpm. 3G…

SKU 3G-OTH-479740

Brand
DUFF-NORTON
Item
Rotary Union: Straight, Plain Cast Iron, 2 Passages
Category
Cast Iron Rotating Joints & Unions
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Technical Specifications

DUFF-NORTON
Manufacturer Part Number
440146C
Type
Plain Cast Iron
Passages
2
Maximum Speed
700 rpm
Seal Material
Carbon Graphite
Threaded Rotating Shaft
1-1/2"
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Technical Documents

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DUFF-NORTON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DUFF-NORTON Rotary Union is a straight, plain cast iron rotating joint with 2 passages and a 1-1/2" threaded rotating shaft (MPN 440146C). It features a carbon graphite seal and a maximum speed of 700 rpm. 3G Electric interprets your demand for this OEM part, sources it across 14 industrial departments, and provides specialist support in combustion, pumps, and controls.

Frequently Asked Questions

What is a DUFF-NORTON rotary union used for?

A DUFF-NORTON rotary union transfers fluid or air from a stationary supply line into rotating machinery. This straight, plain cast iron model with 2 passages and a 1-1/2" threaded rotating shaft is common in paper, steel, and textile mills where reliable rotary joints are needed.

What are the specifications of the DUFF-NORTON 440146C rotary union?

The DUFF-NORTON 440146C is a straight, plain cast iron rotary union with 2 passages, a 1-1/2" threaded rotating shaft, and a carbon graphite seal. Maximum speed is 700 rpm. It is designed for continuous rotation in industrial fluid-transfer applications.

Where to buy a DUFF-NORTON rotary union worldwide?

3G Electric supplies the DUFF-NORTON 440146C rotary union to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this OEM part across 14 departments and support your application needs.

How to install a DUFF-NORTON rotary union?

Ensure the rotating shaft aligns with the machine's centerline to avoid binding. Use thread sealant on the 1-1/2" connection and verify the carbon graphite seal is lubricated before startup. Follow the manufacturer's torque specs and check for leaks at operating pressure.

Used in

Common applications for DUFF-NORTON
Solar panel tracking — Duff-Norton LT series linear actuators adjust panel tilt angles with IP66 protection.
Material handling automation — LS series actuators position conveyor gates or diverters with 675 lbf capacity.
Agricultural equipment — LT actuators control vent openings or seed drill depth in dusty, outdoor conditions.
Industrial valve actuation — LT series with potentiometer feedback provides precise valve position control.
Medical equipment adjustment — LT actuators with low noise plastic nuts are used in patient bed or table positioning.
Packaging machinery — LS series actuators drive pusher arms or lift platforms in high-cycle indoor environments.

DUFF-NORTON Products

3G Electric supplies DUFF-NORTON cast iron rotating joints & unions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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