SMC 10-CDUJB10-8D-F8N | Clean Room Mini Free Mount Cylinder CUJ Series 10mm Bore 8mm Stroke Double-Acting Non-Rotating Rod Compact

The SMC 10-CDUJB10-8D-F8N is a clean room specification miniature free mount cylinder from the CUJ series with a 10mm bore and 8mm stroke. Part number decoded: CDUJ = CUJ series mini free mount cylinder, B = basic type, 10 = bore mm, 8 = stroke mm, D = double-acting, F8N = non-rotating rod option. The CUJ series is SMC's most compact cylinder platform, designed for micro-actuation in extreme space constraints where even compact CQ2 cylinders cannot fit.

What makes the CUJ a "free mount" cylinder? The free mount design allows mounting from any surface — top, bottom, side, front, or back — without special mounting brackets. Integrated through-holes on the cylinder body accept mounting screws directly, enabling maximum installation flexibility in compact clean room tooling. The 10mm bore generates approximately 47N at 0.6 MPa through a minimal 8mm stroke, sufficient for pin insertion, micro-part ejection, small shutter actuation, and miniature clamp operations. The non-rotating rod (F8N) maintains oriented tooling alignment through millions of cycles, preventing angular displacement without requiring external guide mechanisms.

The CDUJB10-8D-F8N adds non-rotating rod to the compact CUJ 10mm platform. For standard rod rotation at lower cost, the CDUJB10-8D provides the same bore and stroke without anti-rotation. For smaller micro-actuation, see CDUJB6 (6mm bore) or CDUJB8 (8mm bore) variants. Double-acting operation delivers powered extend and retract without spring return limitations. Clean series (10-) fluorine grease and Particle Grade 1 for semiconductor and pharmaceutical environments. CUJ bores range from 4mm to 20mm with strokes from 4mm to 30mm. RoHS compliant.