SUN HYDRAULICS
U9D

$119.54 USD

SUN HYDRAULICS
Material:U9D
Summary:Manifold

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics U9D (Material Number: U9D) is a robust line mount manifold designed for hydraulic systems requiring a 4-way configuration. This model features combined ports, with port 1 connected to P, ports 2 to A and B, and port 3 to the tank. It is constructed from durable 6061T651 aluminum, known for its excellent corrosion resistance and strength. The mounting hole diameter is .34 inches (8.6 mm), with a through-depth design allowing straightforward installation using two mounting holes. The manifold accommodates open cavities of type T11A and has a port size of 12 BSPP, making it compatible with various hydraulic applications that require efficient fluid control. This manifold is particularly suited for systems where space optimization and reliability are critical due to its compact design and high-quality material construction. The U9D model does not include anodizing, which Sun Hydraulics has determined can reduce the fatigue life of aluminum manifolds by creating brittle surfaces prone to crack initiation under pressure. This decision underscores the emphasis on durability and long-term performance in demanding environments. When integrating the Sun Hydraulics U9D into a hydraulic system, it is essential to consider the maximum system pressure limitations inherent in aluminum manifolds, which are not rated for pressures exceeding 3000 psi (210 bar). This constraint ensures safe operation within specified parameters while delivering optimal performance in controlling fluid flow across multiple pathways within hydraulic circuits.

Description

Body Type	Line mountLine mount
Body Features	4 way, combined ports 1 to P, ports 2 to A and B, combined ports 3 to tank4 way, combined ports 1 to P, ports 2 to A and B, combined ports 3 to tank
Mounting Hole Diameter	.34 in.8.6 mm
Mounting Hole Depth	ThroughThrough
Mounting Hole Quantity	22
Open Cavities	22
Cavity	T-11A
Port Size	1/2" BSPP1/2" BSPP

Show FAQ

Why does Sun use 6061 aluminum?	6061-T651 is relatively strong, relatively inexpensive, difficult to machine, readily available in all shapes and sizes and very corrosion resistant. 2024 is stronger and machines beautifully, but is expensive and falls to pieces in a corrosive environment.
Why doesn't Sun anodize their aluminum bodies?	Reasons to anodize: To increase corrosion resistance. Sun uses 6061-T651 aluminum. It is one of the most corrosion resistant aluminum alloys there is. Whether or not anodizing improves the corrosion resistance of 6061 aluminum is debatable. We have yet to have a manifold returned because of corrosion. Appearance (color). The 2 colors that would appeal to Sun would be blue or black. Unfortunately these are the colors that are hardest to do consistently. To provide a hard wear surface. Sun does not make parts-in-body valves. The manifold is just plumbing. We don't need a wear surface. Because everyone else does it. Bad reason. Reasons to not anodize: Cost. It's another process. Logistics. When you make tens of thousands of manifolds a month and you anodize hundreds, it's a problem. Consistency. See above. Stamping. After a body is anodized you cannot do any more stamping without making a mess.Inspection. Have you ever tried to look for burrs in a black anodized body? It's the old blackboard factory at night scenario. Torque. You will experience an increase in breakaway torque when removing items from an anodized manifold. Fatigue life. This is the best reason to not anodize. Fatigue failure is a very complex phenomenon. What it takes to initiate a crack is difficult to predict. What it takes to propagate a crack is readily defined. Anodizing produces a very thin, very hard, and very brittle surface on aluminum. The first time you pressurize an anodized aluminum manifold you have initiated fatigue cracks. Whether or not the stress is enough to propagate the cracks is a matter of pressure and manifold geometry. Anodizing an aluminum manifold grossly reduces the fatigue life by anywhere from 20% to 50%.
How big is a drop of hydraulic oil?	There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

Additional Resources

Notes:

Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.

SUN HYDRAULICSU9D

Additional Resources

SUN HYDRAULICS
U9D