SMC Corporation MQR4-M5 Pneumatic Rotary Joint

SMC’s MQR4-M5 is a four‑circuit, metal‑seal pneumatic rotary joint in the MQR family, engineered to transfer compressed air from a stationary supply to a rotating axis with low torque. This four‑circuit, metal‑seal design lets you run multiple air feeds through a single rotating joint while minimizing tubing wear and movement resistance. Part of SMC’s Low Torque Rotary Joint lineup, it is specified for air as the operating fluid and supports an operating‑pressure range of −100 kPa to 1.0 MPa, with a wide ambient temperature range of −10 to 80°C and lubrication not required. At roughly 0.39 kg, the unit is suited for compact installations where weight and space matter, and it accommodates up to about 1,500 rpm, making it appropriate for rotating interfaces in automation, packaging, and auxiliary tooling that need reliable multi‑line pneumatic connections through a moving joint.