These compact and efficient solar tracking jacks are designed to precisely position loads at speeds up to 3.75 inches per minute.
STB - Ball Screw Jacks
Part Number
Typical Dynamic Load Capacity*
Typical Staic Load Capacity*
STB-4.5
9,000 lb.
20,000 lb.
STB-11
22,000 lb.
40,000 lb.
STB-44
88,000 lb.
88,000 lb.
* Actual load capacities may vary depending on desired life and travel speed requirements.
Motor Control Options
Joyce/Dayton offers motor controls ranging from simple Motor Starters to complex positioning systems and Custom controls. Every system that is powered by an electric motor requires a control system. At Joyce, we know that choosing the best option can sometimes be a challenge. That’s why our Engineers are available to help you through the process.
Customer to provide trunnion pins. They should be made of steel with hardness greater than 30 HRC, yield strength greater than 110 KSI, and supported within 1/16 inch of the actuator housing.