The S50MSTMS20P06P08 is a miniature slit-type flexible coupling with 6 mm and 8 mm bore diameters, designed for zero backlash and high torsional stiffness in precision motion applications. It is constructed from stainless steel and compensates for up to 2° angular offset, 0.15 mm lateral misalignment, and ±0.4 mm axial movement. The coupling has a rated torque of 1 N·m, a maximum speed of 31,000 rpm, a torsional stiffness of 250 N·m/rad, and a moment of inertia of 2.4 × 10⁻⁶ kg·m². It weighs 38 grams and features a 3 mm set screw for secure shaft retention. The design adheres to metric dimensions and tolerances as specified for the S50MSTMS series.
Couplings Types
Couplings can be divided into two categories: flexible and rigid. Both types are used to connect two rotating shafts driven by a motor and transmit torque and angular velocity; however, flexible couplings and shafts are designed to accommodate angular misalignment, angular offset, axial movement, and a variety of load conditions. A flexible coupling is pliable due to the twisting and compression of a durable, adaptable material, like neoprene, rubber, or silicone.
Flexibility can also be achieved with thin metal disks, corrugated aluminum bellows (bellows couplings), or even a stainless-steel ball (miniature ball couplings). Some materials can provide vibration reduction, as in our precision flexible antivibration couplings.
Rigid couplings are limited by comparison; rigid couplings are used when shafts are already positioned in precise lateral and angular alignment. Their rigid design inhibits shaft misalignment. They can generally transmit more power than flexible couplings due to their rigidity.
Even the most complicated application challenges can be solved by our skilled engineers, they will identify the best coupling solution for your application. SDP/SI provides a comprehensive range of rigid and flexible couplings. Many of our precision couplings, including the Miniature Bellows Coupling and the Neo-Flex Coupling, have our patented Fairloc® Hub design, which solves phasing, timing, positioning, and frequent removal problems. For more about the easily adjustable Fairloc® hub design click here.
Precision Magnetic Disk Couplings
Precision Flexible Bellows Couplings
Precision Miniature Ball Couplings
Precision Flexible Antivibration Couplings
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Flexible Couplings |
| Product Number | S50MSTMS20P06P08 |
| Product Name | 6mm & 8mm Bores (Side1 & Side2), Zero Backlash Miniature Slit Type Flexible Coupling |
| Coupling Type | Helical / Slit |
| Rated Torque | 8.85 In-lbs (10.2 kg-cm) |
| Rated Speed | 31000 rpm |
