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OEM Factory Direct CQSB Series Compact Air Cylinder Manufacturer Double-Acting Single Rod Air Cylinder Compatible With SMC

OEM Factory Direct CQSB Series Compact Air Cylinder Manufacturer Double-Acting Single Rod Air Cylinder Compatible With SMC

The CQSB Series is a space-saving, high-performance pneumatic cylinder designed for applications where electronic position sensing is not required. By omitting the internal magnet, the CQSB offers a more cost-effective and streamlined solution for high-force pushing and clamping in extremely confined spaces.

Overview
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Product Detailed Description：

The CQSB Series (Basic Compact Cylinder) is engineered for industrial environments that prioritize mechanical simplicity and maximum power density. Without the added length or cost of a magnetic piston, the CQSB series provides a rugged, short-stroke linear motion solution that fits where standard actuators cannot.

Constructed from premium, hard-anodized aluminum alloy, the square body design offers high rigidity and excellent resistance to external impacts. Each unit features a precision-machined piston rod and high-grade seals, ensuring low friction and long-term reliability. Its minimalist design makes it the perfect choice for high-frequency mechanical tasks that rely on external physical stops or timed sequences rather than electronic sensor feedback.

Application Industries:

Automation & Assembly,Packaging Machinery,Electronics Manufacturing,Medical & Laboratory,Textile & Printing,Automotive Assembly,Robotics & EoAT,Woodworking,Semiconductor Equipment

Product Feature：

1. Maximum Space Efficiency: Optimized square-body design allows for installation in the tightest machine compartments.

2. High Force-to-Size Ratio: Delivers significant thrust and clamping force despite its miniature footprint.

3. Cost-Effective Solution: A budget-friendly alternative for systems that do not require magnetic auto-switches.

4. Durable Hard-Anodized Body: Provides superior wear resistance and protection against harsh industrial environments.

5. Flexible Mounting Options: Through-hole mounting allows for direct and secure attachment to any flat machine surface.

6. High-Speed Response: Lightweight internal components allow for rapid cycling in automated production lines.

Specification：

Series	CQSB (Basic Compact Type)
Action	Double Acting (Standard)
Bore Size	Ø12, 16, 20, 25, 32, 40, 50, 63, 80, 100 mm
Standard Strokes	5mm to 100mm (Depending on Bore)
Fluid	Compressed Air (40μm filtered)
Operating Pressure Range	0.05 ~ 1.0 MPa (7.2 ~ 145 psi)
Proof Pressure	1.5 MPa
Operating Temp.	-10°C to 70°C (No freezing)
Lubrication	Pre-lubricated (Non-lube service)
MOQ	10
Lead Time	5-7Days
Warranyt	1 year
Pattern of Payment	PayPal；T/T；L/C；D/P

Customization Options

Option	Details
Bore Size	12, 16, 20, 25 mm (all in stock)
Stroke Length	Standard 5–50 mm; custom strokes up to 100 mm on request
Rod Thread	Male or female rod end; metric or inch thread options
Rod Material	Standard hard chrome-plated steel or optional 304/316 stainless steel
Seal Material	Standard NBR (–10 to 70°C) or optional FKM/Viton (–10 to 150°C)
Cushion Type	Standard rubber bumper; optional pneumatic cushion on larger bores
Auto Switch	Pre-installed reed or solid-state (NPN/PNP, 2-wire/3-wire) with cable length choice
Mounting Accessories	Foot bracket, flange, trunnion, clevis — supplied as kit or pre-assembled
Port Thread	Standard M5×0.8; optional G, NPT, or Rc threads
Surface Finish	Standard anodized or custom color anodizing for OEM branding
Special Variants	Double rod (W type), high-temperature, low-temperature, food-grade grease
OEM/ODM	Custom part number engraving, private-label packaging, branded datasheets

Product Advantages

1. Ultra-Compact, Basic Type — Short body with through-hole basic mounting. Bolts straight onto fixture plates with no bracket hardware — the most space- and cost-efficient compact actuator layout.

2. Short Stroke Optimized — Standard strokes 5–50 mm, up to 100 mm on request. Designed for high-cycle, short-travel motions where long-stroke cylinders waste space and air.

3. SMC CQS/CDQS/CQ2B Series Compatible — Same mounting dimensions, hole patterns, and M5×0.8 ports as SMC compact basic-type cylinders. True drop-in replacement — no redesign needed.

4. Aluminum Alloy Body — Hard-anodized aluminum barrel and end caps. Lightweight, corrosion-resistant, reduces moving mass on high-speed machines.

5. Double Acting, Single Rod — Positive force in both directions with a single rod. Rubber bumper cushioning at both ends for quiet, maintenance-free stops.

6. High Cycle Capability — Compact seal design and low moving mass support speeds of 50–500 mm/s in continuous-duty automation.

7. Magnetic Piston (Standard) — Auto switch ready. Mount reed or solid-state sensors for end-of-stroke position feedback.

8. Low Minimum Operating Pressure — Starts from 0.03 MPa. Works reliably in low-pressure branches and vacuum-assisted circuits.

9. Wide Temperature Range — NBR seals rated –10 to 70°C standard; FKM option extends to 150°C for hot environments.

10. 8h-Year Factory Expertise — Direct from Zhejiang Jinzhi Pneumatic Co., Ltd. (AIRWORK). 100+ CNC machining centers, CE/ISO certified, shipped to 120+ countries.

Application：

1. General Conveyor Material Handling ：

In simple conveyor systems, the CQSB is widely used as a mechanical pusher or diverter gate. In these applications, the cylinder's extension and retraction are often triggered by a central timer or a basic limit switch on the conveyor frame, making the internal magnet of a CDQSB unnecessary. Its compact size allows it to be mounted underneath or alongside narrow conveyor belts to efficiently sort boxes or redirect packages without occupying valuable floor space.

2. Heavy-Duty Jigs & Fixtures in Metalworking ：

For manual or semi-automatic metal clamping fixtures, the CQSB provides a robust mechanical hold. In environments involving heavy welding sparks, high heat, or metal chips, electronic sensors (like those used with CDQSB) can often be damaged or provide false signals. The CQSB focuses on pure mechanical reliability, providing high clamping force to hold workpieces steady during drilling, milling, or grinding operations where the operator manually verifies the position.

3. Industrial Pressing & Stamping ：

The CQSB is an ideal actuator for small-scale pressing tasks, such as inserting pins, pressing bearings, or light stamping of plastic parts. Since these tasks often rely on a hard mechanical stop (the tool hitting the workpiece), the electronic position feedback of a magnetic cylinder is not required. The CQSB’s square body resists the vibration and shock of repetitive pressing cycles, offering a high-durability, low-cost solution for assembly workstations.

Installation and Usage：

1. Mounting: Use the through-holes to mount the cylinder directly to the machine plate. Ensure the mounting surface is clean and flat to avoid internal friction.

2. Air Connection: Use high-quality pneumatic fittings. Flush the air lines before connection to prevent debris from entering the cylinder.

3. Speed Adjustment: We recommend installing flow control valves (speed controllers) to prevent the piston from slamming into the end caps at high speeds.

4. Axial Load: Ensure the load is aligned with the center of the piston rod. Side loads should be avoided to prevent premature seal wear.

5. Environment: The CQSB is pre-greased. If used in dusty environments, ensure the piston rod is kept clean to protect the rod seal.

FAQ

Q1.What is the main difference between CQSB and CDQSB?

A1.The CQSB is a basic compact cylinder without an internal magnet. The CDQSB (with a "D") includes a built-in magnetic ring for use with proximity sensors. If you don't need electronic feedback, CQSB is the more economical choice.

Q2. Can I install sensors on a CQSB cylinder later?

A2.No. The CQSB piston does not have an internal magnetic ring. To use sensors, you must purchase the CDQSB model.

Q3.Is the CQSB interchangeable with other compact cylinders?

A3.Yes, the CQSB follows standard industrial dimensions for square-body compact cylinders, making it a compatible replacement for most standard compact series.

Q4. Does the CQSB come in single-acting (spring return) versions?

A4. Yes, we offer single-acting spring-extend and spring-return variants. Please contact our sales team for specific model availability.

Q5. What are the standard rod-end threads?

A5.Standard CQSB cylinders feature female rod-end threads. Male threads are available as an option (Suffix -M).

Q6. What bore sizes are available for the CQSB?

A6. We provide a full range of bore sizes from 12mm for precision tasks up to 100mm for heavy-duty applications.

Q7. Can this cylinder be used in high-temperature environments?

A7.The standard seals are rated for up to 70°C. For higher temperatures, we offer heat-resistant Viton (FKM) seals as a custom option.

Q8. Does it require regular lubrication?

A8. The CQSB is pre-lubricated with high-quality synthetic grease and is designed for "non-lube" operation. No additional lubrication is needed under normal use.

Q9.What is the recommended maintenance schedule?

A9.Pre-lubricated and designed for oil-free filtered air — minimal upkeep. Weekly: visual check for port leaks and rod surface damage. Every 6 months or 2 million cycles: check rod seal wear; wipe rod clean. Every 12 months or 5 million cycles: replace the complete seal kit as preventive maintenance. If you use lubricated air, lubrication must be continuous — interrupting it washes away the oil film and accelerates seal wear.