SUN HYDRAULICS
VNB

$241.15 USD

SUN HYDRAULICS
Material:VNB
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 VNB (VNB) is a robust manifold designed for hydraulic systems, featuring a 2-station, parallel circuit with relief cavity configuration. This model complies with the ISO 05 interface standard and is constructed from 6061-T651 aluminum, known for its high corrosion resistance and durability. The manifold includes M8x1.25 mounting holes with a depth of 11.1 mm, and it accommodates four mounting holes in total. It also features one open cavity designated as T3A and utilizes 12 BSPP port sizes for efficient fluid transfer. Despite its sturdy construction, the manifold is not anodized to maintain cost efficiency and avoid potential issues such as increased breakaway torque or reduced fatigue life due to anodizing's brittle surface effect on aluminum. This design choice ensures long-lasting performance under pressures up to 3000 psi (210 bar), making it suitable for various hydraulic applications where reliability and corrosion resistance are critical.

Description

Body Type	Bar ManifoldBar Manifold
Interface	ISO 05ISO 05
Body Features	2 Station, Parallel circuit with relief cavity2 Station, Parallel circuit with relief cavity
Mounting Hole Thread	M8x1.25 - 6HM8x1.25 - 6H
Mounting Hole Depth	.44 in.11.1 mm
Mounting Hole Quantity	44
Open Cavities	11
Cavity	T-3A
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:

For mounting bracket information, see catalog or drawing 991-021-***
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 HYDRAULICSVNB

Additional Resources

SUN HYDRAULICS
VNB