SUN HYDRAULICS
YJY

$203.90 USD

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SUN HYDRAULICS
Material:YJY
Summary:Manifold

Quantity in stock: 0

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***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 YJY (Material Number: YJY) is a line mount manifold designed for efficient hydraulic systems. It features a cross pilot body type with no specific interface, making it versatile for various applications. The manifold has a mounting hole diameter of 0.42 inches (10.7 mm) and is designed for through-hole mounting with two mounting holes available. It incorporates the T-17A cavity and supports port sizes of 1 1/4 BSPP, ensuring compatibility with a range of hydraulic components. The open cavities count is two, which allows for flexible plumbing configurations in complex hydraulic circuits. This manifold is constructed from 6061-T651 aluminum, known for its excellent corrosion resistance and strength suitable for hydraulic applications. Despite the potential benefits of anodizing, Sun Hydraulics does not anodize their manifolds to maintain cost-efficiency and avoid issues related to fatigue life and increased breakaway torque. This choice ensures that the manifold remains reliable under standard operating conditions without compromising its structural integrity. The YJY model is suitable for use in systems where maximum system pressure does not exceed 3000 psi (210 bar), as aluminum manifolds are not rated beyond this pressure threshold regardless of port size or type. Its design caters to high-flow valve applications and offers a robust solution for managing hydraulic fluid distribution efficiently within specified pressure limits.

Description

Body Type	Line mountLine mount
Interface	NoneNone
Body Features	Cross pilotCross pilot
Mounting Hole Diameter	.42 in.10,7 mm
Mounting Hole Depth	ThroughThrough
Mounting Hole Quantity	22
Open Cavities	22
Cavity	T-17A
Port Size	1 1/4" BSPP1 1/4" BSPP

Show FAQ

How big is a drop of hydraulic oil?	There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
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%.

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 HYDRAULICSYJY

Additional Resources

SUN HYDRAULICS
YJY