Zinko ZRH-302 30 Ton 2.5" Stroke Hollow Plunger Single Acting Cylinder


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Zinko ZRH-302 30 Ton 2.5" Stroke Hollow Plunger Single Acting Cylinder

These General Purpose Hollow type Cylinders of our store are designed for use in a variety of applications where lifting, pushing, bending or holding may be required.Ideal for use in shop, agricultural, automotive/truck service, and construction maintenance.


  • High-strength alloy steel construction.
  • Chrome-plated piston rods resist wear and corrosion.
  • Special bearing design helps prevent galling for long life and trouble-free performance.
  • Polyurethane seals and wipers to reduce contamination, extending cylinder life.
  • Hardened saddles keep top bearing and plunger from jamming.
  • Saddle grooves help prevent slipping.
  • Heavy-duty spring enables consistent fast plunger retraction.
  • All models come with fast-flow quick-connection coupler and dust cap.
  • May be used in any position.
  • Hollow plunger design allows for both pull and push forces.


Capacity (Tons)  30
Stroke (in)  2.52
Oil Capacity (in³)  18.18
Cylinder Effective Area (in²)  7.22
Minimum Height (in)  7.00
Maximum Heights (in)  9.52
Outside Diameter (in)  4.50
Weight (lbs)  29.000000


Parts Breakdown
User Manual



ZINKO makes every effort to assure that its products meet high quality and durability standards and warrants to the original retail consumer/purchaser of our products that each product be free from defects in materials and workmanship as follows:

1 year limited warranty on all ZINKO products unless specified otherwise. Warranty does not apply to defects due directly to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities or to a lack of maintenance. ZINKO LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED ABOVE FROM THE DATETHE PRODUCT WAS PURCHASED AT RETAIL. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES ORMERCHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOWLONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

In no event shall ZINKO be liable for incidental or consequential damages. The liability of ZINKO on any claim for loss or damage arising out of the sale, resale, or use of a jack or related service equipment shall in no event exceed the purchase price. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTALOR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

To take advantage of this warranty, the product or part must be return for examination, postage prepaid, to an Authorized Repair Station designated by our Ontario, California office. Proof of purchase date and explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, ZINKO will either repair or replace the product or refund the purchase price if we cannot readily and quickly provide a repair or replacement, if you are willing to accept such refund. ZINKO will return repaired product or replacement at ZINKO expense. If it is determined there is no defect, or that the defect resulted from cause not within the scope of ZINKO warranty, then the user must bear the cost of storing and returning the products. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. For service contact your local distributor.