The S50XUTM series consists of split-type flexible couplings with aluminum alloy hubs, steel pins, polyimide bushings, stainless steel spacers, and black oxide steel screws, designed for zero backlash and high torsional stiffness. These couplings accommodate a maximum angular offset of 1° and a lateral offset of 0.2 mm, with shaft tolerances of h7 for bore sizes from 3 to 12 mm. Rated torque ranges from 6 to 12 N·m depending on bore size, with maximum speeds up to 42,000 rpm and torsional stiffness from 200 to 900 N·m/rad. The coupling mass ranges from 8 to 33 grams. The series replaces the older S50MCTM and shares consistent material composition and misalignment compensation across variants.
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 | S50XUTM40H20H20 |
| Product Name | Cross Joint Type Flexible Couplings, 20 / 20mm Bores, 40mm Overall Length, Material: Hub-Alum. Alloy, Pins-Steel, Bushings-Polyimide, Spacers-S.S., Screws-Black Oxide Steel |
| Rated Torque | 53.1 In-lbs (61.22 kg-cm) |
| Rated Speed | 15000 rpm |
| Bore Diameter | 0.7874 inch (20 mm) |
