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    Parker Series 3H Cylinders
    Mounting-Info-1

    Series 3H Design Improvements Increase Reliability

    a) Hardened washers under each tie rod nut prevent galling, ensuring correct tie rod pre-stress and pressure envelope integrity.

    b) Class 1 service polyurethane rod wiperseal and o-rings as body end seals and rod gland static seal offer superior abrasion and extrusion resistance for longer service life.

    c) High compressive strength non-metallic piston wear rings, that minimize tube scoring, are standard on all configured piston selections.

    d) Cap cushion performance options are selectable as floating check bushing type for normal applications or solid orifice style for more demanding high speed and load operation.

    e) Cartridge style needle valve with captive micro adjust screw for precision cushion tuning.

    f) One common piston is used for 4 piston seal styles. When changing operating conditions require a different seal style, the piston and rod assembly is unchanged.

    g) Piston-to-rod connection is  pre-stressed to maximize fatigue life. An o-ring on the piston ID ensures a leak free joint and anaerobic adhesive further secures the threaded connection.

    h) Steel head and cap blocks are precision size, finished on all sides and are bored and grooved for concentric alignment of mating parts.

    Parker Series 3H Heavy Duty Hydraulic Cylinder | 7" & 8" Bore

    3H 7.00" & 8.00" bore cylinders set the standard for performance, durability, and trouble free operation. Parker’s superior design, the use of high quality materials and stringent manufacturing practices provide all customers with long cylinder service life and reduced operating costs. Design features such as the “Jewel” rod gland, hard chrome plated piston rods, and stepped cushions provide increased machine productivity through reduced downtime, faster cycle times, and improved system efficiency. Every Parker cylinder is individually tested before leaving our plant to assure proper performance and leak free operation. All Parker Cylinder products carry an eighteen month warranty. Select Parker Series 2H and 3H cylinders for your hydraulic cylinder requirements. Parker Series 2H and 3H will provide the value and performance you need for all of your industrial hydraulic application demands.

    Parker-Jewel-Gland

    Standard Specifications | 7" & 8" Bore
    • Heavy Duty Service – ANSI/(NFPA) T3.6.7R3 - 2009
    • Specifications and Mounting Dimension Standards
    • Standard Construction – Square Head – Tie Rod Design
    • Nominal Pressure – 3000 psi1
    • Standard Fluid – Hydraulic Oil
    • Standard Temperature – -10°F to +165°F2
    • Piston Diameters – 3.000" through 5.500"
    • Mounting Styles – 17 standard styles at various application ratings
    • Strokes – Available in any practical stroke length
    • Cushions – Optional at either end or both ends of stroke.
    • Rod Ends – Four Standard Choices – Specials to Order

    1 If hydraulic operating pressure exceeds 3000 psi, send application data for engineering evaluation and recommendation. See Section H for actual design factors.

    2 See Section H for higher temperature service.

    In line with our policy of continuing product improvement, specifications in this catalog are subject to change.

    Note: Series 2H Hydraulic Cylinders fully meet ANSI/(NFPA) T3.6.7R3 - 2009 Specifications and Mounting Dimension Standards for Square Head Industrial Fluid Power Cylinders.

    Available Mounting Styles | 7" & 8" Bore

    Piston Rod End Dimensions | 7" & 8" Bore

    series-3H-rod-end-thread-style-chart 1

    “Special” Thread Style 3

    Special thread, extension, rod eye, blank, etc., are also available.
    To order, specify “Style 3” and give desired dimensions for KK, A, W or WF.
    If otherwise special, furnish dimensioned sketch.

     

    Style 55 Rod End

    series-3H-rod-end-thread-style-chart 2

    1 For special WG dimension, specify “Style 3” and give desired dimension for WG. For other changes, place “S” in the model code, and describe rod end with dimensioned sketch.
    2 Style 9 stroke restrictions may apply. See Style 9 Minimum Stroke Table on How to Order page for details.
    3 These piston rod numbers will have 4 spanner wrench holes instead of wrench flats. See rod drawings on page 117 for dimensions.

     

    Parker Series 3H Heavy Duty Hydraulic Cylinders |10" to 20" Bore
    3h-large-bore-diagram

    Parker Series 3H 10in to 20in is your best choice for all your large bore heavy duty hydraulic cylinder applications.

    A) Configurable Rod Sealing Systems
    All bores with Class 1 seals utilize state-of-art rod seals and double-lip wiper seals produced from tough, abrasion resistant polyurethane to provide long leak-free service and reduced maintenance.

    B) Hybrid Composite Wear Ring
    Offers significant performance improvements in comparison to traditional metal or filled nylon rod bushings.

    C) End Seals
    Pressure-actuated cylinder body-to-head and cap o-rings with back-up washers, with tough, extrusion resistant polyurethane o-rings utilized on 10" thru 14" bores with Class 1 seals.

    D) High-Strength Tie Rods
    Made from 100,000 psi minimum yield steel with cut threads for added strength.

    E) The Cylinder Body
    Heavy-wall steel tubing is honed to a micro finish bore, providing a wear surface for long lasting piston bearing and seal life.

    F) Piston to Rod Joint O-Ring Seal

    G) Precision Block Steel Caps
    Bored and grooved to promote concentricity for mating parts.

    H) Ports
    SAE O-ring straight thread ports are standard.

    I) Align-A-Groove
    A 3/16" wide surface machined at each end of the cylinder body. Makes precise mounting quick and easy.

    J) Four Configurable Piston Sealing Designs
    For the most demanding applications. See Piston Seal Selection Page.

    K) Step Cushions
    Now feature captive needle valve adjusters.

    L) Precision Block Steel Heads
    Bored and grooved to promote concentricity for mating parts.

    M) Alloy Steel Tie Rod Nuts
    With hardened steel washers.

    N) Bolt On Rod Gland
    Externally removable without cylinder disassembly.

    The Large Bore, High Pressure Hydraulic Cylinder
    Parker Designed to Meet Your Needs

    Parker Series 3H large bore cylinders provide unmatched reliability, performance, and innovative design features that aid in increasing productivity while reducing operating costs. Parker’s externally removable bolt-on gland assembly makes preventive and routine maintenance quick and easy! In many cases, the cylinder does not have to be removed or disassembled to facilitate service. Our innovative design provides for fast turn around, reduced downtime, and increased productivity. In addition to our removable gland assembly, Series 3H cylinders also include a multitude of innovative design features such as: anti-extrusion body end seals, floating
    cushions, hi load piston (standard), and various port and rod end options to meet your application requirements. Every Series 3H cylinder is individually tested before leaving our plant to assure proper and leak free operation. All Series 3H cylinders come with an eighteen month warranty standard.

    3h-large-bore

    Standard Specifications | 10" to 20" Bore
    • Heavy Duty Service
    • Standard Construction – Square Head – Tie Rod Design
    • Nominal Pressure – 3000 psi1
    • Standard Fluid – Hydraulic Oil
    • Standard Temperature – -10°F to +165°F2
    • Bore Sizes - 10.00" through 20.00"
    • Piston Rod Diameters – 4.500" through 10.000"
    • Mounting Styles – 12 standard styles at various application ratings
    • Strokes – Available in any practical stroke length
    • Cushions – Optional at either end or both ends of stroke.
    • Rod Ends – Three Standard Choices – Specials to Order

    1 If hydraulic operating pressure exceeds 3000 psi, send application data for engineering evaluation and recommendation. See Section H for actual design factors.

    2 See Section H for higher temperature service.

    In line with our policy of continuing product improvement, specifications in this catalog are subject to change.

    Available Mounting Styles | 10" to 20" Bore

    Piston Rod End Dimensions | 10" to 20" Bore

    Rod End Dimensions | 10.00" - 20.00" Bore
    series-3HD-style-rod-end-dimensions chart

     

    "Special" Thread 3 Style 3

    Special thread, extension, rod eye, blank, etc., are also available. To order, specify “Style 3” and give desired dimensions for KK, A & WF. If otherwise special, furnish dimensioned sketch.

    1For special WG dimension, specify “Style 3” and give desired dimension for WG. For other changes, place “S” in the model code, and describe rod end with dimensioned sketch.
    2Style 9 stroke restrictions may apply. See Style 9 Minimum Stroke Table on How to Order page for details.

     

    Style 55 Rod End

    series-3HD-style-rod-end-dimensions chart 55

    Warning Triangle WARNING: These products can expose you to chemicals including lead and/or DEHP and/or carbon black, which are known to the State of California to cause cancer or birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov
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