SMC 25A-CDQ2A20-50DCMZ-M9BL | Secondary Battery Compatible Compact Cylinder CQ2 Series 20mm Bore 50mm Stroke DCM Cushion Auto-Switch

The SMC 25A-CDQ2A20-50DCMZ-M9BL is a secondary battery compatible compact cylinder from the CQ2 series, designed for space-constrained actuation in lithium-ion cell and module production lines. Part number decoded: CDQ2 = CQ2 double acting, A = A-type mount, 20 = 20mm bore, 50 = 50mm stroke, DCM = cushion with modification, Z = auto-switch groove, M9BL = pre-mounted PNP auto-switch. The 25A- prefix certifies material compatibility with secondary battery manufacturing environments where copper, fluorine, and silicone contamination must be eliminated.

This cylinder generates approximately 19N at 0.6 MPa through a 50mm cushioned stroke. The DCM end-cushion absorbs impact energy at both stroke ends, protecting delicate electrode stacking fixtures and separator film tensioning mechanisms from shock damage. The M9BL PNP auto-switch provides position confirmation to the PLC, enabling reliable sequencing of multi-station pouch cell assembly processes. Operating pressure range is 0.05–1.0 MPa with magnetic piston standard.

Typical applications include separator film feed indexing, tab alignment positioning on electrode stacking tables, electrolyte dispensing nozzle advance/retract, and light-duty contact sensing on formation tray loading stations. Choose the 20mm bore CQ2 over the 16mm when actuation force above 12N is required, or over the 25mm when installation envelope is tighter than 35mm width. For strokes shorter than 50mm at this bore, the CDQ2A20-15DCZ provides 15mm; for longer travel, step up to the CDQ2A25 at 25mm bore. Compatible with D-series auto switches and SMC speed controllers for precise stroke speed tuning. RoHS compliant.