SIT SERVOPLUS Bellows Couplings
SIT SERVOPLUS are all-metal, torsionally rigid bellows couplings with backlash-free torque transmission, designed specifically for servo motor drives where maximum positioning accuracy is required. They transmit torque through a durable stainless steel bellows element connected to metal hubs on both sides, compensating for axial, radial and angular shaft misalignment while requiring no maintenance and allowing operating temperatures up to +300 °C. The hubs are made of aluminum alloy with a hole for a radial clamping screw, in variants with a pilot or finished bore for mounting the coupling on the shaft.
SERVOPLUS couplings can be used in both directions of rotation and in any mounting position.
GSPM (Pilot Bore Hubs)
GSPMF (Finished Bore Hubs)
GSPS (Bellows Elements)
Shaft Coupling Construction
- GSPM/GSPMF hubs with a pilot or finished bore and a hole for a radial clamping screw
- GSPS bellows element
Typical Applications
SIT SERVOPLUS bellows couplings with GSPM/GSPMF hubs and a GSPS bellows are designed specifically for drives controlled by servo motors, where in addition to torque transmission, maximum positioning accuracy and zero backlash are required.
They are used, for example, on the axes of CNC metalworking and woodworking machines, in robotics and manipulators, on packaging and printing machines, in instrumentation, measurement and automation technology, and on laser and cutting machines, as well as in other precision automated drives with closed-loop position control. They are also used in the food, chemical, paper, metalworking, and automotive industries.
Properties
- Torque transmission with maximum precision and zero backlash
- High torsional rigidity
- Low moment of inertia
- Excellent dynamic characteristics even at high speeds and during frequent load reversals
- Simple and quick installation
- Maintenance-free and wear-resistant
- Temperature resistance up to +300 °C
Documents for Download
Related Products
ESCODISC Disc Couplings
ESCOGEAR Gear Couplings
We also provide design and calculation of transmission components, including shaft couplings. In the case of your interest in this service, use the detailed Drive or Coupling Calculation Form.
Shaft Coupling Manufacturer Profile
SIT S.p.A. is a company focused on mechanical power transmission (SIT stands for Società Italiana Trasmissioni, meaning Italian Power Transmission Company). Under the SIT brand, it develops, engineers, manufactures, and distributes high-quality solutions and components for industrial applications across a wide range of sectors – from automotive and precision engineering to the food and textile industries, as well as chemical plants and logistics centers.
Together with Elatech S.r.l. and other companies, SIT S.p.A. is part of the Scaglia Group. The Group operates in Europe, North America, and Asia, and comprises 7 manufacturing facilities and 6 subsidiaries with more than 1,000 employees. As part of the Group, the individual companies benefit from shared technologies and innovations, providing financial stability and sustainable growth.
We are an authorized distributor of shaft couplings, bushes, sprockets, and pulleys from SIT S.p.A., as well as polyurethane timing belts and conveyor belts from Elatech S.r.l.