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Parker Hydraulic Cylinders Series VH

Extra-long Tapered Cushions Oversize Ports Meets N.F.PA. Specifications
Nominal Pressure - 3000 PSI
Standard Bore Sizes - 2-1/2"Through 8"
Piston Rod Diameters - 1" Through 5-1/2"
Fifteen Standard Mounting Styles
Series “VH” very heavy-duty hydraulic cylinders are premium quality cylinders—with operating capacities of 3,000 PSI. They fully meet NFPA standards. And to make sure every cylinder is premium-quality, Parker Hannifin subjects each and every one— not just batch samples—to tough inspection and performance tests.
Series “VH” ports are two sizes or larger than NFPA standards. Standard location is position 1 as shown in dimensional drawings. Where mountings do not interfere, ports may be located at positions 2, 3, or 4. Ports are not available at positions 2 or 4 on mounting style C, 2h/2 thru 5” bore cylinders. SAE straight thread 0-ring ports will be supplied unless otherwise specified.
Cushions on Series “VH” cylinders are 3” long on all sizes except 31/4” and 4” bore sized equipped with 2” and 21/2” diameter piston rods which are supplied with cushions 213/16” long at head end. Self-centering floating cushion sleeve at head end and cushion spear at cap is tapered for 2/3 its length to give maximum cushioning effect for 1/3 its length.
Thrust Key
An extended retainer plate, to serve as a thrust key, can be supplied on mounting styles C and F. The thrust key would be the same as used on Parker Hannifin “2H” hydraulic cylinders.
Air Bleeds
When specified, 1/8” NPTF bleed ports are available at either head or cap end. For design and location, ask for Drawing 81292.
Mounting accessories for Series “VH” are the same as used on Parker Hannifin Series 2H hydraulic cylinders. For dimensional data for rod clevis, knuckle, clevis bracket, mounting plate and pivot pin, see the Parker Series 2H section of this catalog.
To obtain dimensioning information on a double rod cylinder, first select the desired mounting style and refer to the corresponding single rod cylinder model shown on the preceding pages. After you have determined all necessary dimensions from that drawing, turn back to this page and supplement those dimensions with additional ones from this drawing and the table at right. These added dimensions provide the additional information needed to completely dimension a double rod cylinder model.
On a double rod cylinder where the two rod ends will be different, be sure to state which rod end is to go at which end of the cylinder.

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