Zinko ZAJ-2510 25 Ton 4" Stroke Aluminum Journal Jack


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Zinko ZAJ-2510 25 Ton 4" Stroke Aluminum Journal Jack

25 Ton Aluminum Mechanical Journal Jack, 4 inch stoke. Beveled ring gear interlocks with the precision forged pinion to provide shifted tooth actuation. Extremely strong, precise interlocking gears. Used in structural steel work, bridges, shop building and other industry where powerful, all position jacks are required. Ideal for applications where electric power or air power is inconvenient or dangerous.


  • Unique construction bearing is made for longer life and smooth horizontal advance.
  • Rigidly designed screw made by chrome -molybdenum steel to withstand excessive load.
  • Beveled ring gear interlocks with the precision forged pinion to provide shifted tooth form for strong and excellent interlocking.
  • Special ratchet handle interior design with nickel-chrome wheel and plunger enables strong rotation for an easy , smooth operation.
  • Buttress threads will not creep down under load.
  • Operable vertically or laterally (lateral movement requires optional traversing bed).
  • Constructed of aluminum alloy, reducing overall weight.


Capacity (Tons)  25
Stroke (in)  3.93
Operation Force (Ft. / lb.)  520
Minimum Height (in)  7.87
Maximum Heights (in)  11.80
Saddle Diameter (in)  2.28
Base Diameter (in)  4.80
Weight (lbs)  29.000000


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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.