Miniature couplings from SDP/SI

These compact flexible disc couplings have an extended torque range and good performance. The compact design offers torques from 0.6 to 12 Nm. Device manufacturers can benefit from the smaller size and lower weight, while getting more torque capacity and power. As a high-performance coupling for motion control, disc couplings are well suited for applications requiring precise positional accuracy.

SDP/SI bellows couplings are flexible couplings designed for different types of loads. SDP/SI Hi-Flex bellows couplings are used for applications that combine high shaft alignment with low radial loads on the bearings. SDP/SI modular bellows couplings are configurable and offer high torsional stiffness for fast torque transfer. A wide variety of bores and combinations are offered to meet specific needs.

SDP/SI spiral couplings are a type of flexible coupling for axial movement, angular rotation and parallel offset. This coupling has one-piece construction, so there is no backlash. The coupling is made flexible by removing material from the piece in a spiral pattern. SDP/SI spiral couplings are available in aluminum and stainless steel.

Flexible Couplings can compensate for shaft misalignments and are designed for different types of loads. No single type of coupling can provide a universal solution to all coupling problems; therefore, many designs are available, each with construction features to meet one or more application requirements. SDP/SI offers many styles of flexible couplings, such as bellows couplings, screw couplings, Oldham couplings, universal joints and flexible shafts.

For positional accuracy and vibration reduction in a servo system . These couplings solve alignment errors. For servo systems for semiconductor manufacturing equipment industry, scanning equipment and other automation applications.

Standard sizes available in bores from 3 to 16 mm. Can also be customized.

Two- and three-piece Junior couplings are curved gear couplings made of nylon. Designed to compensate for axial, radial and angular misalignments, they are lightweight and maintenance-free.

A magnetic coupling transfers torque by using a magnetic field rather than a physical mechanical connection. Because a non-contact magnetic connection is created between the two shafts, these couplings are typically used for liquid pumps and screw systems where seals wear or break over time as the two surfaces slide against each other.

SDP/SI Precision Multi-jawed Coupling is a rigid coupling that can handle minimal shaft alignment. The helical gear coupling allows a positive connection between two shafts that can be disconnected or coupled at any time at standstill.

An Oldham coupling consists of three parts: a hub connected to the input shaft, a hub connected to the output shaft, and a floating member connected to the first two by tongue and groove in the center of the coupling. The tongue and groove of one side are 90° or perpendicular to the tongue and groove of the other side. The input and output shafts rotate at the same speed as the center member, about its center point. Twice per revolution, the center point travels a circular path around half of the input and output shafts. To prevent backlash, springs are usually used.

Oldham couplings can accommodate lateral shaft misalignment of up to 10% of the nominal shaft diameter and angular misalignment of up to 3°. Lubrication can be a problem, but in most applications this can be solved by choosing a coupling that uses a wear-resistant plastic or elastomer member instead of steel or bronze floating members.

Rigid couplings have limited applications unlike flexible couplings. Rigid couplings cannot compensate for shaft misalignments and are therefore used when shafts are already in precise lateral and angular alignment. Because of their simple and robust design, rigid couplings can generally transmit more power than similar-sized flexible couplings.

If polyurethane timing belts are preferred because of weight (aluminum pulleys) or environmental variables, the endless spooled belts from Megadyne (Megapower) or Elatech (iSync) are the solution.

Single and double universal joints made of stainless steel and alloy steel are offered in various bore sizes. Miniature universal couplings have no backlash, sealed lubrication and low inertia. Reverse universal couplings are small in size and light in weight at a given torque capacity. Telescopic units can be made from these couplings by combining them with miniature telescopic ball shafts.

Plastic universal joints are cost-effective, dampen vibrations, are electrically insulating and are well suited for low-torque applications. These joints are available in a wide variety of sizes and styles. It is also possible to manufacture connections according to specific requirements. Please contact us for this.