Page Header
Acme Screw
These self-locking, compact solar tracking jacks are designed to precisely position loads at speeds up to 3.75 inches per minute.
| STM - Machine Screw Jacks | ||
|---|---|---|
| Part Number | Typical Dynamic Load Capacity* | Typical Static Load Capacity* |
| STM-2 | 4,000 lb. | 4,000 lb. |
| STM-5 | 10,000 lb. | 10,000 lb. |
| STM-15 | 30,000 lb. | 30,000 lb. |
| STM-30 | 60,000 lb. | 60,000 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.
2D/3D Drawings
Login to access 2D/3D Drawings
Product Media
| Machine Screw Solar Tracking Jack (STM) Dimensions (in inches) | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Model | A | B | C | D | E | F | G | H | J | K | L | M | N | P | Q | R | S | T | U |
| STM-2 | 8.250 | 3.250 | 8.5 | 1.0 | 1.75 | 0.75 | 1.31 | 2.69 | 3.69 | 2.06 | 0.625 | 0.188 Sq x 1.0 Lg | 1.88 | 5.5 | 1.250 | 5/16-18 | 5.000 | 0.75 | 1.00 |
| STM-5 | 10.250 | 4.000 | 9.5 | 1.0 | 1.75 | 0.75 | 1.31 | 2.69 | 4.12 | 2.06 | 0.625 | 0.188 Sq x 1.0 Lg | 3.00 | 6.0 | 1.250 | 5/16-18 | 5.000 | 1.00 | 1.50 |
| STM-15 | 11.750 | 4.625 | 10.5 | 1.0 | 2.00 | 0.75 | 1.31 | 2.69 | 5.31 | 2.13 | 1.000 | 0.250 Sq x 1.25 Lg | 3.75 | 6.5 | 1.375 | 5/16-18 | 5.875 | 1.50 | 1.75 |
| STM-30 | 20.000 | 9.000 | 14.5 | 2.0 | 3.00 | 1.50 | 2.00 | 4.00 | 8.00 | 3.13 | 1.000 | 0.250 Sq x 1.25 Lg | 6.00 | 8.0 | 1.750 | 3/8-16 | 8.000 | 2.00 | 2.25 |
- Aluminum housing
- Alloy screw
- 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.