Tri-Adjustable Round Tube Dimensional Sketch

This general engineering product specification is for the Wallace Steel Round-Tube Tri-Adjustable Gantry Crane.

You will find these models among the steel 1 & 2 ton and 3 & 5-ton Tri-Adjustable Gantries. They are the ones that have a model number that includes the letter “S” twice, for example, S2T10-S10AC and S6T12-S25AC.

General Engineering Product Specification

Gantry end frames shall be of steel round tube construction manufactured to Wallace Cranes standards, including, but not limited to the following:

  • Gantry shall be adjustable in height and have main leg malleable iron center castings for brace leg attachment to main support legs.
  • Gantry shall be adjustable in span so that operators may adjust the crane to an inboard braced, outboard braced, or a combination of the two or approved cantilevered configuration.
  • Gantry shall be adjustable in caster frame spread and have aluminum castings for attachment of casters.
  • The steel I-beam shall be American Standard and have a design deflection of no greater than l/800th of the span. The I-beam shall also be free-swinging and self-aligning to lift off-center loads as approved.
  • The telescoping legs shall be adjustable in 6” increments and also be equipped with malleable iron safety stops for everyday use as well as when adjusting height.
  • Spread adjustment on the caster frame shall be in 6” increments. Over spreading of the caster frame adjustment shall be prevented by means of an internal steel safety cable.
  • The main leg malleable iron center castings shall have spring-loaded pearlitic grade load-adjusting pins for adjusting / maintaining height adjustment of the crane as well as the attachment of brace legs.
  • Gantry shall be equipped with four, 360 degree rotating, non-marking phenolic resin casters with 4-position swivel locks, at 90 degrees, to provide easy steering of the crane by locking “lead” casters only, or to allow the positioning of the crane more firmly than a brake by locking all four casters 90 degrees to each other. Casters shall be 6” or 8” diameter as determined by the capacity, height, and span of the crane.
  • The I-beam and I-beam brackets shall be painted with red gloss industrial quality paint.
  • The frames, including brace legs, caster frames, and main legs shall be dip painted with red gloss industrial quality paint for protection of both inner and outer tubing walls.
  • The model number to be provided shall be tested in accordance with Wallace specifications. (A specific unit shipped is not tested; unless a Certificate of Test is ordered [additional charge applies]).
  • Gantry is manufactured in accordance with our interpretation of ANSI B30.17 and U.S. OSHA, (Section 1910.179, revised January 1976), regulations at the time of manufacture.

Downloadable / Printable PDF Version of the Specification

Download or print a PDF version of the specification.

Last Rev. 1/2016