21-CDM2

Name: SMC 21-CDM2 — 10-11-21-22-CDM2 Double Acting Single Rod Clean Room
Brand: SMC

SMC 21-CDM2 — 10-11-21-22-CDM2 Double Acting Single Rod Clean Room

The SMC 21-CDM2 is an official catalog model CM2 stainless steel cylinder featuring a clean series 21 relief type configuration that is copper, fluorine, and silicon-free with low particle generation. This unit accommodates bore sizes of 20mm, 25mm, 32mm, or 40mm, stroke lengths ranging from 25mm to 300mm, and port thread options including Rc, NPT (TN), and G (TF). It supports multiple mounting styles, cushion types, auto switch variants with configurable lead wire lengths, and male or female rod end threads. Submit your exact part number, quantity, and application requirements to receive a formal quotation for this SMC component.

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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued SMC references — within one business day.

Manufacturer: SMC
Part number: 21-CDM2
Product series: CM2 Stainless Steel Cylinder
Data verification: Manufacturer evidence reviewed

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Exact part-number verificationTechnical properties are matched to 21-CDM2.

Worldwide sourcingSupport for planned and urgent industrial requirements.

Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Product Series: CM2 Stainless Steel Cylinder
Configuration Status: Official catalog model
Clean Series: 10 (Relief Type), 11 (Vacuum Suction Type), 21 [Relief Type (Copper, Fluorine & Silicon-free + Low Particle Generation)], 22 [Vacuum Suction Type (Copper, Fluorine & Silicon-free + Low Particle Generation)]
-: -
C: C
Magnet: None, D (Built-in)
M2: M2
Mounting: B (Basic Style), L (Axial Foot Style), F (Rod Side Flange Style), G (Head Side Flange Style), BZ (Boss-cut Basic Style), FZ (Boss-cut Rod Side Flange Style)
Bore Size: 20mm, 25mm, 32mm, 40mm
Port Thread: Rc, TN (NPT), TF (G)
Stroke: 25mm, 50mm, 75mm, 100mm, 125mm, 150mm, 175mm, 200mm, 250mm, 300mm
Cushion: Rubber Bumper, A (Air Cushion)
Rod End Thread: Male Rod End, F (Female Rod End)
Z: Z
Auto Switch: No Switch, M9B--Solid State, Gen. Purpose, 2 Wire, Horizontal, M9N--Solid State, Gen. Purpose, 3 Wire NPN, Horizontal, M9P--Solid State, Gen. Purpose, 3 Wire PNP, Horizontal, A33A--Reed, DC Volt, LED, Terminal, A34A--Reed, AC/DC Volt, LED, Terminal, A44A--Reed, AC-DC Volt, LED, DIN, A90--Reed, AC Volt, Horizontal, A93--Reed, DC Volt, AC Volt, LED, Horizontal, A96--Reed, DC Volt, LED, Horizontal, B54--Reed, DC Volt >5 <24, AC Volt <200, LED, B59W--Reed, DC Volt >5 <24, 2-color Indication, B64--Reed, DC Volt >5 <24, AC Volt <200, C73--Reed, DC Volt >5 <24, AC Volt <100, LED, C73C--Reed, DC Volt >5 <24, LED, Connector, C80C--Reed, DC Volt >5 <24, AC Volt <100, Connector, G39A--Solid State, Gen. Purpose, 3 Wire NPN, Terminal, H7A1--Solid State, Gen. Purpose, 3 Wire NPN, H7B--Solid State, Gen. Purpose, 2 Wire, H7BA--Solid State, Water Resist., 2 Wire
Lead Wire or Prewired Connector: 0.5m (Or None in the Case of No Switch), N (No Lead Wire), M (1m), L (3m), Z (5m), SC (0.3m Cord Length, M12-4 Pin Connector, 3 & 4 Out), SAPC (0.5m Cord Length, M8-3 Pin Connector), SBPC (0.5m Cord Length, M8-4 Pin Connector), SDPC (0.5m Cord Length, M12-4 Pin Connector), MAPC (1.0m Cord Length, M8-3 Pin Connector), MBPC (1.0m Cord Length, M8-4 Pin Connector), MDPC (1.0m Cord Length, M12-4 Pin Connector)
Number: 2 pcs. (or None in the Case of No Switch), 3 pcs., 4 pcs., S (1 pc.)

Engineering context

Identification and RFQ Guidance

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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

What to include in your RFQ

Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against SMC 21-CDM2. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.