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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 one passage, featuring a 3/8" threaded rotating shaft and a carbon graphite seal. It supports a maximum speed of 700 rpm (MPN 730444C).

SKU 3G-OTH-479753

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
730444C
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"
View Full Spec Sheet

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 one passage, featuring a 3/8" threaded rotating shaft and a carbon graphite seal. It supports a maximum speed of 700 rpm (MPN 730444C).

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 or air from a stationary supply line into rotating machinery, such as drums, rolls, or spindles. This straight, plain cast iron model with one passage and a 3/8" threaded rotating shaft is common in paper, textile, and rubber processing.

What are the specifications of the DUFF-NORTON 730444C rotary union?

The DUFF-NORTON 730444C is a straight, plain cast iron rotary union with one passage. It has a 3/8" threaded rotating shaft, a carbon graphite seal, and a maximum speed of 700 rpm. The manufacturer part number is 730444C.

Where to buy a DUFF-NORTON rotary union worldwide?

3G Electric supplies the DUFF-NORTON rotary union 730444C to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. 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. Support the union body to avoid side loads. Use a thread sealant on the stationary connection. Do not exceed 700 rpm. Refer to the DUFF-NORTON manual for torque values.

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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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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DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1/4" Threaded Rotating Shaft, Plain (MPN 730431C). 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 730431C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1/4".