Cotta TR Series Transfer Cases – Mobile Rig Application

The TR series Transfer cases are proven to supply power to both the front and rear axles and are available with various ratios, multiple speeds, axle disconnects, and built in differentials. Capacities are to 600 + horsepower. Accessory drive pads add... Read More

Cotta GR1600 Speed Reducer – Blender Application

The Cotta GR1600 Speed Reducers match engine speed to driven equipment speed allowing both the engine and load to operate at peak efficiency. These compact and heavy duty gearboxes are designed for use with the commercial offerings of major engine... Read More

Spotlight on Cotta Gearboxes used in Oilfield Applications

Palmer Johnson Power Systems became authorized exclusively as the North American Distributor and Service Provider for Cotta in 2016.  Since that time we have seen unprecedented growth of two products primarily supporting our Oilfield Customer base.  The... Read More

Aventics Electronic Propulsion Controls

Marex OS III Control Systems AVENTICS control systems can be found on all type of ships around the world. Work vessels with classification, passenger liners, coastal cargo ships and even yachts rely on engineering expertise Made in Germany. Regardless of... Read More


The EC300JS from Twin Disc is versatile, intuitive, and reliable. The joystick is easy to use and easy to learn. The Duffield 58, as seen in this video, is equipped with the Caterpillar main engine 12.9 985 HP at 2300 rpm, the Twin Disc Transmission... Read More

VIDEO - Dana Off-Highway Systems

Dana Spicer produces off-highway drivetrain systems that are of superior quality and performance. These systems are equipped with technology that is the leader in off-highway drivetrain systems. Palmer Johnson Power Systems is an authorized service... Read More

Replacing the Allison 9800 series with the TD 7600 series

As the Oil & Gas market continues to pick up, Well Servicing Fleets are struggling to keep their fleets in operation. Palmer Johnson's Oil and Gas team has worked to position ourselves to help this market reduce downtime. 1. Invested in approximately... Read More

New HP800 Hydraulic PTO From Twin Disc

Twin Disc recently released the newest heavy-duty power take-off, the hydraulically-actuated HP800. This unit is ideal for a wide range of applications. A spring applied, hydraulically released brake (SAHR) has been added as a standard feature. An... Read More