Mini seals, maximum impact

Trelleborg's Stefa® Mini Radial Shaft Seals deliver precision sealing for the demanding world of robotics. These compact, lightweight seals are engineered to handle high-speed operations and complex movements while maximizing space efficiency in servo motors, gearboxes and robotic joints.

Engineered for Performance

The Stefa® Mini family includes three specialized designs: the standard Mini Radial Shaft Seal for precision applications, the Mini Cassette Seal for demanding environments requiring no shaft surface preparation and the Nano Radial Shaft Seal for extreme space constraints with its 3x3 mm cross-section.

Each seal provides exceptional protection against grease and oil leakage while keeping contaminants out. Low-torque designs reduce energy consumption and emissions, while proprietary Trelleborg compounds ensure chemical compatibility across diverse applications.

Built for Robotics

These seals extend maintenance intervals and reduce replacement costs through outstanding durability and wear resistance. They support oscillating and bidirectional movements essential for advanced robotics while maintaining reliable performance in high-speed, high-acceleration conditions.

Metal inserts and springs are available in carbon steel or stainless steel for food applications. The preassembled cassette design eliminates costly shaft surface preparation, while the nano seal's minimal footprint addresses the tightest space requirements in robotic axis drives and compact designs.

From facility automation equipment to direct drive motors, Stefa® Mini Radial Shaft Seals provide the sealing performance modern robotics demand.

Click here to learn more about Stefa® Mini Radial Shaft Seals.