Trimble SAM 200 Electric Motor for Assisted Steering of Agricultural Machinery

Typical faults:
Wear of the motor and gearbox bearings
Reduced steering force
Steering inaccuracy or difficulty in calibration

The Trimble SAM-200 is an electric steering motor that installs directly on the steering column and replaces the tractor's original steering wheel with a dedicated Trimble wheel. It functions as the main actuator for Trimble assisted and automatic steering systems (EZ-Pilot, EZ-Pilot Pro and Autopilot Motor Drive), converting the steering commands calculated by the guidance system into actual wheel movement.

The OE code 8338280 identifies the complete SAM-200 motor/gearbox/electronics assembly used in numerous retrofit kits and OEM applications in the agricultural sector, particularly on CNH machines (Case IH, New Holland, Steyr) and other brands. The unit is compact, does not modify the vehicle's hydraulic system and allows automating the steering while maintaining the tractor's original configuration.

Technical specifications

• Type: electric steering motor with integrated gearbox for direct drive of the steering wheel.
• Construction: single block including electric motor, mechanical gearbox, power and control electronics, position sensor/encoder.
• Application: steering actuator for Trimble EZ-Pilot, EZ-Pilot Pro and Autopilot Motor Drive systems.
• Control interface: connection via dedicated wiring to the navigation controller (NavController, e.g. NAV III) and the Trimble guidance console installed in the cab.
• Power supply: powered from the vehicle electrical system (typically 12 V), with fuse protections and dedicated cabling in official kits.

DIPA can service these components thanks to its experience and expertise.

Functions

• Automates the tractor's steering wheel rotation following the trajectories calculated by the guidance system (AB lines, curves, parallel passes, headlands, etc.).
• Keeps the vehicle on the set track, minimizing overlaps and missed coverage in operations such as seeding, fertilizing, spraying and tillage.
• Significantly reduces operator fatigue, who no longer has to continuously correct the steering during the workday.
• Allows rapid retrofit on many agricultural machines, thanks to mounting on the existing column and replacing only the steering wheel.
• In Autopilot Motor Drive mode it offers levels of precision and responsiveness close to hydraulic systems, using the same SAM-200 motor but with more advanced control logic.
• Supports firmware updates and calibrations via the Trimble console, allowing optimization of steering behavior based on the machine model and operating conditions.

Model applications

The Trimble SAM-200 OE 8338280 is widely used on tractors and agricultural machines prepared for Trimble guidance systems, both in retrofit and in OEM configuration with dedicated kits. Case IH, New Holland and Steyr tractors equipped with Trimble guidance systems based on EZ-Pilot or Autopilot Motor Drive are very common.

Typical defects

• Wear of the motor and gearbox bearings
• Reduced steering force
• Steering inaccuracy or difficulties during calibration

Final conclusions

The Trimble SAM-200 OE code 8338280 is the reference electric steering motor for Trimble EZ-Pilot, EZ-Pilot Pro and Autopilot Motor Drive guidance systems. Its installation on the steering wheel makes it an extremely versatile solution for retrofitting many tractors and agricultural machines, ensuring high guidance precision and significant operator comfort.

Its compact architecture, the ability to operate in different driving modes and its widespread use across major agricultural brands make it a strategic component.

DIPA has a wide range of spare parts dedicated to the Agri world: from vehicle-related parts to those for auxiliary equipment. Not only that: it has remanufactured components with like-new performance that allow savings on replacements while contributing to environmental protection through the circular economy. If the spare part you need is not available, don’t worry: DIPA can refurbish your part "on demand", restoring full functionality and safety in a short time.