Bosch Rexroth”s QR1 series of fittings provides an inch and metric (ISO-G) program for the company”s pneumatic components. In addition to the mini and standard programs, the complete fitting program also includes various function fittings. The QR1 (quick release) series includes connections for all types of applications. Push-in fittings are equipped with a plastic release ring that enables fast connection and release of compressed-air tubing. The series features an oval release ring. Mini fittings support plastic tubing ODs of 1/8” to ¼” and three to six mm. Standard fittings can be used for tubing ODs of 5/32” to ½” and four to 16 mm.

Versions at a glance:
Mini
Thread sizes: 10-32UNF and 1/8”, M3 – G1/8
Tubing O.D.: 1/8”- 1/4”, 3 – 6 mm
Standard
Thread sizes: 10-32UNF – 1/2”, M5 – G1/2
Tubing O.D.: 5/32” – 1/2”, 4 – 16 mm
Function fittings
Thread sizes: 10-32UNF – 1/2”, G 1/8 – G1/2
Tubing O.D.: 5/32” – 1/2”, 4 – 12 mm