OEM Factory Direct CDM2B Series Stainless Steel Mini Pneumatic Cylinder Manufacturer Double Acting Single Rod Air Cylinder Compatible With SMC Supplier

Product Detailed Description:

Our CDM2B Series (SMC Type Interchangeable) is engineered for durability and precision. The cylinder utilizes a high-strength stainless steel tube combined with anodized aluminum end caps, ensuring a lightweight yet rugged construction. The "D" in CDM2B signifies a built-in magnetic ring, allowing for seamless integration with auto-switches for position sensing. Available in bore sizes from 20mm to 40mm, this series offers multiple tail configurations (Basic type B or Flat tail type U) and mounting options (Flange, Foot, or Pivot) to fit any tight-space application.

Application Industries:

Food & Beverage Processing,Pharmaceutical Manufacturing,Medical Device Production,Chemical Processing,Marine & Offshore Equipment,Water & Wastewater Treatment,Outdoor & Agricultural Equipment,Electronics & Semiconductor,Automotive Testing & Engine Bay,Dairy & Brewery Equipment

Product Feature:

• Superior Corrosion Resistance: The 304 stainless steel barrel is ideal for humid or mildly corrosive industrial environments.
• High-Speed Performance: Capable of reaching speeds up to 750 mm/s, significantly improving machine cycle times.
• Compact Round Design: The small footprint allows for installation in narrow spaces where square-body cylinders cannot fit.
• Auto-Switch Compatible: Integrated magnetic ring (CDM2B) allows for easy mounting of proximity sensors on the barrel.
• Long Service Life: High-quality NBR seals and precision-ground piston rods ensure millions of trouble-free cycles.

Specification:

Customization Options

Product Advantages

• Full stainless steel external construction — corrosion resistance as standard. The cylinder tube is precision-drawn stainless steel. The tie rods, tie-rod nuts, piston rod, and rod-end nut are all stainless steel as the default specification. Every external metal component resists rust — there is no zinc plating to degrade, no chrome to peel, no exposed carbon steel to corrode. This is the definitive choice for washdown, outdoor, marine, and chemical environments.

• Stainless steel tube — smooth bore, long seal life. The drawn stainless steel tube provides an inherently smooth internal surface that requires no coating or plating. Unlike anodized aluminum bores that can wear through to expose soft substrate, the stainless bore maintains its surface integrity throughout the cylinder's service life, providing consistent low friction and predictable seal wear rates.

• Wide temperature range — -10°C to 150°C. The standard CDM2B operates from -10°C to 70°C. With optional Viton seals and high-temperature grease, the operating range extends to 150°C — making it suitable for autoclaves, ovens, engine test cells, and heat-treatment equipment where most cylinders cannot survive.

• Low-speed capability — smooth motion at 5–50 mm/s. The CDM2B maintains smooth, stick-slip-free motion at speeds as low as 5 mm/s. Precision-ground seals and the mirror-smooth stainless bore enable controlled slow-speed operation critical for adhesive dispensing, delicate part placement, and precision positioning applications.

• Adjustable stroke variants — built-in precision stops. Adjustable extend and retract stroke variants allow mechanical stroke-end positioning without external hard stops. Turn the adjustment screw to set the precise stop position — ideal for applications requiring fine-tuning during setup or between production runs.

• Magnetic piston with auto switch compatibility. The CDM2B includes an integrated magnetic piston ring as standard, enabling external position sensing via proximity switches mounted on the tie rods with dedicated switch brackets. Detect stroke-end positions without mechanical flags or external sensors.

• SMC CM2/CDM2 1:1 dimensional replacement. Mounting dimensions, tie-rod spacing, port locations, rod-end threads, and accessory interfaces match SMC CM2/CDM2 specifications exactly. Drop-in replacement with no modifications required.

Application:

• Food & Beverage Packaging：

Due to the stainless steel construction, the CDM2B excels in packaging lines that require frequent wash-downs. It is widely used for pushing, capping, and sorting tasks where hygiene and rust prevention are paramount.

• Electronics & Semiconductor Assembly：

Its compact size and high-speed actuation make it perfect for pick-and-place modules, PCB testing fixtures, and small-part feeding systems where space is extremely limited and precision is required.

• Textile & Labeling Machinery：

In high-frequency environments like weaving or automatic labeling, the CDM2B provides the reliable, rapid-fire response needed for tension control and applicator arm movements.

Installation and Usage:

• Piping Prep: Before connecting, flush all air lines to remove dust or tape fragments.
• Mounting Tension: Do not over-tighten the mounting nut on the threaded nose; follow the torque specs to avoid distorting the barrel.
• Load Alignment: Ensure the load is aligned with the piston rod axis. Side loads will cause rapid wear on the rod bushing and seals.
• Speed Adjustment: Use speed controllers (flow control valves) to prevent the piston from hitting the end caps at full force, even if it has rubber bumpers.

FAQ

Q1. What is the difference between CM2B and CDM2B?

A1. CDM2B has a built-in magnet for position sensing with auto-switches, while CM2B does not.

Q2. Is this cylinder interchangeable with SMC models?

A2. Yes, our CDM2B series follows standard international dimensions and is a 1:1 replacement for the SMC CM2 series.

Q3.Can I get this cylinder with a flat tail (Type U)?

A3. Yes, we provide both the Basic type (B) with a threaded tail and the Flat tail type (U) for shorter overall length.

Q4. What is the maximum stroke available?

A4.Standard strokes go up to 500mm, but we can provide customized strokes up to 1000mm depending on the bore size.

Q5. Does it require lubrication?

A5.It is pre-lubricated at the factory and can operate without oil, but filtered 5-micron air is highly recommended.

Q6.Are mounting brackets like Foot (LB) or Flange (FA) included?

A6.Brackets are sold separately or as a kit; please specify your required mounting type (FA, SDB, or LB) when ordering.

Q7. What is the delivery time ?

A7.Normal model 1-3days,because we have ability to do the stock.For big order,it takes about 10-15days.

Q8. What is the payment term?

A8.We accept T/T, L/C, WESTERN UNION.

Factory Advantages and Certifications

Company Introduction 1

Company Introduction 2

Certification