The S50HWWM20H0404 is a split-hub, one-piece helical coupling made of 17-4PH stainless steel, designed for zero backlash and constant velocity transmission in high- and low-speed applications. It has a bore diameter of 4 mm, an outer diameter of 20 mm, and a length of 15 mm. The coupling accommodates a maximum angular offset of 5°, a lateral offset of 0.25 mm, and axial motion of ±0.25 mm. Its maximum momentary torsional torque is 2.6 N·m, with a torsional inertia of 0.078 kg·cm² based on the smallest standard bore. It features an integral clamp and shaft relief for secure mounting and reliable performance.
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 | S50HWWM20H0404 |
| Product Name | One Piece Zero Backlash Constant Velocity, Split-Hub Helical Coupling |
| Coupling Type | Helical / Slit |
| Rated Torque | 11.5 In-lbs (13.27 kg-cm) |
| Units | Metric Design |
| Bore Diameter | 0.1575 inch (4 mm) |
