Home of Plate Jack®

R.P. Stagg and Co. LLC designs and manufactures Plate Jack®, a compact, versatile, and powerful jack. It’s ideal for areas with limited headroom and permanent installations. Plate Jack is a steel bellows jack with flat bearing surfaces that maintain a consistent linear pressure-thrust relationship throughout its extension range. We offer complete injection systems for use with hydraulic oil, water, epoxy, or cementitious grouts. These systems include digital or analog pressure monitoring and recording devices. Plate Jacks and injection systems are backed by our application engineering services, on-site assistance, and training.

In addition to Plate Jacks, we manufacture construction appurtenances such as column clamps, shoring devices, transfer beams, and other load transfer devices.