Parker Series 2H Cylinders

Series 2H 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 2H Heavy Duty Hydraulic Cylinder

Series 2H 1.50"-6.00" and 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.

Standard Specifications

• 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
• Bore Diameters – 1.50" through 6.00" (Larger sizes available)

• Piston Rod Diameter – 0.625" through 4.000"
• Mounting Styles – 19 standard styles at various application ratings
• Strokes – Available in any practical stroke length
• Cushions – Optional at either end or both ends of stroke. “Float Check” design is standard at cap end.
• 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 Parker Engineering Data pages for higher temperature service.

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.

In line with Parker's policy of continuing product improvement, specifications on this page are subject to change.

Available Mounting Styles

Piston Rod End Dimensions

“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.

“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.

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.