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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 3/8" Threaded Rotating Shaft - Cast Iron Rotating Joints & Unions
DUFF-NORTONCast Iron Rotating Joints & Unions

DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 3/8" Threaded Rotating Shaft

The DUFF-NORTON Rotary Union is a straight, plain cast iron rotating joint with a single passage and a 3/8" threaded rotating shaft. It features a carbon graphite seal and supports a maximum speed of 700 rpm (MPN…

SKU 3G-OTH-479752

Brand
DUFF-NORTON
Item
Rotary Union: Straight, Plain Cast Iron, 1 Passages, 3/8" Threaded Rotating Shaft
Category
Cast Iron Rotating Joints & Unions
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Technical Specifications

DUFF-NORTON
Manufacturer Part Number
730443C
Type
Plain Cast Iron, Plain
Passages
1
Maximum Speed
700 rpm
Seal Material
Carbon Graphite
Threaded Rotating Shaft
3/8"
Rotating Shaft Thread Size
3/8"
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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 a single passage and a 3/8" threaded rotating shaft. It features a carbon graphite seal and supports a maximum speed of 700 rpm (MPN 730443C).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a DUFF-NORTON rotary union used for?

A DUFF-NORTON rotary union transfers fluid (coolant, air, oil) from a stationary supply line into rotating machinery such as rolls, drums, or spindles. This straight, plain cast iron model with a single passage and 3/8" threaded rotating shaft is common in paper, steel, and textile processing.

What are the specifications of the DUFF-NORTON 730443C rotary union?

The DUFF-NORTON 730443C is a straight, plain cast iron rotary union with 1 passage, a 3/8" threaded rotating shaft, and a carbon graphite seal. It supports a maximum speed of 700 rpm. The seal material provides reliable performance in moderate-temperature fluid transfer applications.

Where to buy a DUFF-NORTON rotary union worldwide?

3G Electric supplies the DUFF-NORTON 730443C rotary union to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this plain cast iron rotating joint.

How to install a DUFF-NORTON rotary union?

Ensure the rotating shaft threads (3/8") are clean and properly aligned with the machine spindle. Use thread sealant on the stationary connection, not the rotating side. Support the union body to avoid vibration. Refer to the manufacturer's manual for torque specs and seal pre-load.

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: Elbow, Plain Cast Iron, 2 Passages, Threaded Rotating Shaft, Gases/Oils (MPN 730859C). Key specifications — Maximum Speed: 600 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1/4" Threaded Rotating Shaft, Plain (MPN 730432C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1/4".
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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1/4" Threaded Rotating Shaft, Plain (MPN 730432C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1/4".
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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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440319C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 2" Threaded Rotating Shaft, Plain (MPN 440465C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 2" Threaded Rotating Shaft, Plain (MPN 440465C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440321C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
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