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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages - Cast Iron Rotating Joints & Unions
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, featuring a 1-1/4" threaded rotating shaft (MPN 440321C). It is designed for a maximum speed of 700 rpm and uses a carbon…

SKU 3G-OTH-479743

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
440321C
Type
Plain Cast Iron
Passages
2
Maximum Speed
700 rpm
Seal Material
Carbon Graphite
Threaded Rotating Shaft
1-1/4 "
Rotating Shaft Thread Size
1-1/4 "
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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, featuring a 1-1/4" threaded rotating shaft (MPN 440321C). It is designed for a maximum speed of 700 rpm and uses a carbon graphite seal material. 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is a DUFF-NORTON rotary union used for?

A DUFF-NORTON rotary union transfers fluid or gas from a stationary supply line into rotating machinery. This straight, plain cast iron model with 2 passages and a 1-1/4" threaded shaft is common in industrial applications like paper mills, steel processing, and packaging lines where reliable rotary joints are needed.

What are the specifications of the DUFF-NORTON 440321C rotary union?

The DUFF-NORTON 440321C rotary union is a straight, plain cast iron unit with 2 passages. It has a maximum speed of 700 rpm, a carbon graphite seal, and a 1-1/4" threaded rotating shaft. This genuine component is supplied by 3G Electric, which sources across 14 industrial departments.

Where to buy a DUFF-NORTON rotary union worldwide?

3G Electric supplies the DUFF-NORTON 440321C rotary union to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance for international delivery. Contact us to order this genuine cast iron rotating joint with a 1-1/4" threaded shaft.

How to install a DUFF-NORTON rotary union?

Install the DUFF-NORTON rotary union by aligning the 1-1/4" threaded rotating shaft with the machine's rotating connection. Use proper thread sealant and avoid overtightening. Ensure the carbon graphite seal is lubricated per manufacturer guidelines. 3G Electric can provide sourcing support for this component.

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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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440322C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440322C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
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