MOSMATIC Rotary Union: Straight, Nickel-Plated C38500 Brass, 1 Passages, 1/4 in Stationary Port
The MOSMATIC Rotary Union: Straight (MPN 30.051) is a nickel-plated C38500 brass rotating joint designed for air service, featuring a single passage and a 1/4 in stationary port. It operates at a maximum speed of 30…
SKU 3G-OTH-464551
Need installation or engineering help?
Ask a question
Product Description
The MOSMATIC Rotary Union: Straight (MPN 30.051) is a nickel-plated C38500 brass rotating joint designed for air service, featuring a single passage and a 1/4 in stationary port. It operates at a maximum speed of 30 RPM, providing a reliable connection for rotary applications.
Frequently Asked Questions
What is the MOSMATIC Rotary Union 30.051 used for?
The MOSMATIC Rotary Union 30.051 is used to transfer air from a stationary supply line into rotating machinery. It is ideal for low-speed rotary applications such as indexing tables, reels, or air-actuated clutches where a reliable, leak-free connection is needed.
What are the specifications of the MOSMATIC Rotary Union 30.051?
The MOSMATIC Rotary Union 30.051 is a straight, single-passage rotary joint made of nickel-plated C38500 brass. It has a 1/4 in stationary port, is rated for air service, and has a maximum speed of 30 RPM. The manufacturer part number is 30.051.
Where to buy the MOSMATIC Rotary Union 30.051 worldwide?
3G Electric supplies the MOSMATIC Rotary Union 30.051 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this brass rotating joint.
How to install the MOSMATIC Rotary Union 30.051?
Install the MOSMATIC Rotary Union 30.051 by connecting the 1/4 in stationary port to your air supply line and the rotating port to the machine shaft. Ensure alignment is within 0.005 in to avoid premature wear. Use thread sealant on NPT connections and verify rotation is free before pressurizing.
Used in
Common applications for MOSMATICMOSMATIC Products
3G Electric supplies MOSMATIC brass rotating joints & unions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









