Heavy Duty Square Tube Drop Leg Jack Bulldog
(Bulldog Part #: HB-182815)
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Strong, durable and sturdy, the Bulldog 12,000 lb. Support Capacity Square Jack is the BIG reason by Bulldog has carried the load in agricultural, construction and horse/livestock trailer industries since 1923. No mounting hardware. Crank handle (HB-15181) sold separately.

  • Mounting is done by direct weld
  • Bulldog model number SWQ 180 DL-BX


Lift Capacity10,000 lbs
Support Capacity12,000 lbs
Travel12.5 inches
Extended (B)54.6 inches
Retracted (A)28.6 inches
Clearance (C)N/A


  • 10,000 pound lift capacity, 12,000 support capacity
  • 13.5 inches of additional drop leg extension with standard disc foot
  • 4 inch square tubing, 7 gauge superior alloy steel
  • Drop leg pull pin positioned to the FRONT of the jack
  • Sidewind design - can be used in tandem

Not Included:


1919 - In a small third floor room over his car dealership in Wausau, Wisconsin, Thomas J. Jacob begins making high-quality precision tools of his own design. His venture becomes known as the Hammer Blow Tool Company. The death of a favorite hunting dog due to an accident involving a poorly-designed trailer hitch leads Jacob to develop the first drop-forged ball-and-socket trailer hitch, which he names the "Never Lets Go" Bull Dog. More inventions follow, positioning Hammer Blow at the forefront of the trailer industry at its infancy.

1930's - Demonstration models of camper trailers built by Jacob at the Chicago World's Fair set off a period of rapid growth in the industry.

1940's - Jacob dies in 1945. His wife, Lula, takes over Hammer Blow and guides it with great success for more than 20 years.

1960's - In 1967, Lula Jacob sells Hammer Blow to Neway Equipment Company of Muskegon, Michigan, which later sells to Lear Siegler, Inc.

1970's - In 1977, private investors led by Thomas J. Reinhart purchase and rename The HammerBlow Corporation. Expansion of the mechanical jack line and related products continues for more than a decade.

The above information has been provided by the Manufacturer, and we cannot guarantee the accuracy thereof or endorse the opinions expressed.