8 products

Dor-o-matic spares.

Dor-O-Matic was established in the United States in the 1950s and became one of the pioneering names in automatic pedestrian door systems. The company gained early recognition for its innovative pneumatic and later electro-mechanical door operators, which provided reliable, hands-free access for commercial and public buildings.

Throughout the 1960s and 1970s, Dor-O-Matic expanded rapidly across North America and Europe, developing a strong reputation for durable swing and sliding door mechanisms widely used in retail, healthcare, and transport facilities. Its focus on accessibility and safety made it a preferred choice for architects and installers seeking dependable entrance automation.

In the 1990s, Dor-O-Matic became part of the Ingersoll Rand group, and its product range continued to evolve under the company’s commercial door and access division. In 2014, Allegion sold its UK door businesses, including the Dor-O-Matic branded automatic door business, to an affiliate of Alcyon Financial Limited.

Although the Dor-O-Matic name is now largely historical, its engineering influence can still be seen in many automatic door systems installed around the world. The brand’s legacy continues through the evolution of its technology within modern automatic entrance solutions.

Find Dor-O-Matic sliding door spares for existing installations, including Astroslide and ASD2000 drive belts, carriage wheels, anti-riser wheels, breakout shoes and floor guides. Check the operator reference and compare the original component before ordering. For a belt, confirm width, tooth pitch and length; for guides and rollers, check dimensions and mounting details. The product listing’s stated application takes precedence over a shared collection or brand name. Send us photographs and the operator label if you need help identifying a legacy part.