Mill-Max Manufacturing Corp. has launched new Omniball spring-loaded connectors for applications requiring multiple points of contact in sliding or rotational orientations. The unique Omniball spring-loaded contact (patent pending) features a rolling ball interface, enabling contact to be made between components in axial and non-axial alignments.
These versatile connectors facilitate creative solutions for innovative interconnect arrangements while providing optimal electrical, mechanical, and structural reliability. The connectors use Omniball contacts, spring-loaded pins in which the traditional plunger has been replaced by a gold-plated brass ball. They’re designed to optimize connections between components that slide or revolve into contact.
When engaged, the ball compresses and rolls, allowing the mating surfaces to make contact and then easily slide parallel to each other while spring force acts to ensure consistent electrical contact is maintained. This rolling action prevents binding, premature wearing, and structural failure that traditional, plunger style, spring pin connectors can be prone to in these types of applications.
The Omniball connectors, offered in single and double row configurations, have a pin-to-pin spacing of 4 mm (.1575″), a 6.76-mm (.266″) above board height and are available in through-hole or surface-mount termination styles. There are also options for threaded inserts to provide secure mounting in rugged applications and for alignment pegs on the SMT connectors. Insulator material is Nylon 4/6, characterized by excellent high-temperature performance, dielectric strength, and mechanical toughness.
The new contacts also feature .762 mm (.030″) maximum stroke, gold plating on all components and a 2.3-mm (.091″) diameter ball interface. These spring-loaded pins are durable, they have been tested to 1,000,000 compression cycles and rolled over 67 miles (108 km) at half stroke while still meeting specifications for contact resistance of 30 milliohms, and spring force of 55 grams at mid stroke (.381 mm | .015″).
The single-row connectors are offered in 2-10 positions. The part numbers are 845-22-0XX-10-0X1101 (through-hole) and 845-22-0XX-30-XX1101 (SMT). Double row connectors are offered in 4-20 positions. The part numbers are 847-22-0XX-10- 0X1101 (through-hole) and 847-22-0XX-30-XX1101 (SMT).