The S59DZ9-HCF120412 is a heavy-duty constant-velocity coupling designed to reduce rotational vibration and transmit torque with zero backlash while accommodating angular misalignment up to 1°. It features aluminum hubs, an acetal control-flex member, and hardened alloy steel pins, with a bore of 0.250 inches, an overall length of 0.78 inches, and a maximum outside diameter of 0.748 inches. The coupling is secured with #4-40 socket head screws and operates within a temperature range of -10°F to +150°F. It provides a continuous torque rating of 272 ozf·in and a peak torque of 384 ozf·in, with a torsional stiffness of 9.9 lbf·in per degree. The design requires no maintenance or lubrication and offers electrical isolation.
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 | S59DZ9-HCF120412 |
| Product Name | 0.25" Bore, 0.78" Overall length Schmidt control-flex constant velocity coupling |
| Rated Torque | 10 In-lbs (11.53 kg-cm) |
