The S50XUTM20H04H04 is a split-type flexible coupling with 4 mm bores on both sides and an overall length of 20 mm, designed to transmit torque while compensating for small angular and lateral misalignments. Hubs are made of aluminum alloy, pins of steel, bushings of polyimide, spacers of stainless steel, and screws of black oxide steel. It has a maximum angular offset of 1° and a maximum lateral offset of 0.2 mm. The coupling supports a rated torque of 8 N·m and a maximum speed of 31000 rpm. Its torsional stiffness is 400 N·m/rad, and its rotational inertia is 8.1 × 10⁻⁷ kg·m² at the maximum bore size. The shaft tolerance is 0/-0.015 mm for 8 and 10 mm bores, and 0/-0.012 mm for 3 to 6 mm bores, which includes the 4 mm bores of this part.
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 | S50XUTM20H04H04 |
| Product Name | Cross Joint Type Flexible Couplings, 4 / 4mm Bores, 20mm Overall Length, Material: Hub-Alum. Alloy, Pins-Steel, Bushings-Polyimide, Spacers-S.S., Screws-Black Oxide Steel |
| Rated Torque | 5.31 In-lbs (6.12 kg-cm) |
| Rated Speed | 31000 rpm |
| Bore Diameter | 0.1575 inch (4 mm) |
