CDQ2B40-20DMZ: Thin Compact Cylinder, Intelligent Power Unit with Built-in Magnet

Product Positioning
The CDQ2B40-20DMZ is a double-acting, single-rod thin cylinder from SMC’s CQ2-Z series. Its core advantages lie in its ultra-thin design, lightweight structure, and intelligent control capabilities. It packages powerful linear driving force within a square body with extremely low axial height. It is the ideal actuator for workstations in automation equipment where installation space is limited but reliable power output and position feedback are required. It is widely used in electronic assembly, packaging machinery, medical devices, and general industrial automation.

Core Highlights: Built-in Magnet, Compact Thin Design, Lightweight Construction

• Built-in Magnet for Intelligent Control
  The “D” in the model number indicates a built-in magnet, allowing users to optionally select a magnetic switch (such as M9B, A93 series) to achieve non-contact detection and feedback of the piston position, facilitating integration with control systems like PLCs.
  Note: This model does not come standard with a magnetic switch; it must be ordered separately.
• Thin and Compact Design, Significant Space Savings
  Utilizes a square body and扁平化结构, significantly reducing axial height for easy installation in limited spaces.
  Compared to the older CQ2 series, weight is reduced by 5% to 13%, greatly lowering motion inertia and improving response speed.
• Double-Acting Drive with Clear Thrust Specifications
  Features a double-acting design where compressed air drives the piston for both forward and return strokes, enabling flexible and responsive motion control.
  Bore size: Φ40mm, Stroke: 20mm, providing stable and reliable output thrust.
• Theoretical Thrust Data for Precise Selection
  At 0.5MPa: 628 N (extending), 528 N (retracting).
  At 0.6MPa: 754 N (extending), 634 N (retracting).
  At 0.7MPa: 880 N (extending), 739 N (retracting).
• Wide Operating Conditions, Maintenance-Free (Non-lube)
  Operating pressure range: 0.05 to 1.0 MPa; proof pressure: 1.5 MPa, suitable for various conditions from low-pressure start-up to high-pressure drive.
  Piston speed: 50 to 500 mm/s; ambient temperature: -10 to 70°C (without switch) / -10 to 60°C (with switch).
  Port size: Rc 1/8″ (PT 1/8 tapered thread); piston rod thread: M14×1.5 external thread.
  Non-lube design: pre-lubricated at the factory for long-term operation without additional oil, reducing maintenance costs.

Detailed Model Breakdown
Based on SMC naming conventions and multiple search results, the CDQ2B40-20DMZ model number decodes as follows:

Specifications Overview

Structure and Features
According to SMC technical data, key features of the CQ2-Z series include:

Application Scenarios

• Packaging Machinery: Material pushing, pallet positioning, carton pressing.
• Automotive Manufacturing: Clamping and positioning in welding fixtures, assembly stations.
• Electronic Assembly: PCB pressing, component positioning, workpiece handling.
• General Automation: Various standard stations requiring medium-thrust linear motion.
• Multi-Station Integration: Applications requiring dense arrangement of multiple cylinders with position detection.
• Space-Constrained Equipment: Workstations within equipment with tight internal space that require thin power units and intelligent control.

Summary: A Reliable Choice for a Thin, Intelligent Power Unit
The CDQ2B40-20DMZ thin cylinder perfectly addresses the core challenge in automation equipment of “limited space requiring reliable power and position feedback” through its three core technological advantages: intelligent control capability enabled by the built-in magnet, space-saving thin and compact design, and powerful thrust of 628 N (at 0.5MPa). Its lightweight structure reduces system burden, the rod-end external thread simplifies load connection, and the wide operating condition range ensures stable operation in various industrial environments. Choosing the CDQ2B40-20DMZ means equipping your automation equipment with a space-saving, intelligently controllable, and high-performance power unit—an ideal choice for enhancing equipment performance and integration density.