Restore the efficiency of your automatic sliding door system with our genuine Record STA21 Drive Unit. Designed specifically for the Record System 20, this complete Motor Drive Unit (MDU) is the industry standard for reliability and performance. Whether you are performing a Record STA21 Retrofit or a direct repair, this assembly ensures seamless operation.

Why Choose This Record STA21 MDU?

The Record STA21 Drive Unit is the heart of your automatic door operator. Over time, wear and tear can affect the motor's precision. Our replacement unit is a direct fit, eliminating the need for complex modifications. It is engineered to meet the exact specifications of the original Record STA21 Assembly.

Key Features & Specifications:

• Part Type: Complete Drive Unit / MDU (Motor Drive Unit)
• Compatibility: Exclusively for Record System 21 Drive operators.
• Condition: Brand New, OEM Quality.
• Variant: Available as standard or STA21 No Brake Unit (please select your required configuration).
• Installation: Plug-and-play design for certified technicians.

Common Symptoms for Replacement

Consider replacing your drive unit if you experience:

• Irregular door movement or "juddering".
• Error codes pointing to motor overload on the controller.
• Excessive noise coming from the Record STM21 motor area.

Technical Note: This unit is often searched for as a Record STM21 Replacement due to the motor labeling. Please verify your existing part number matches the Record STA21 MDU specifications before ordering to ensure compatibility.