21-CM2R

Name: SMC 21-CM2R — 10-11-21-22-CDM2R Air Cylinder Direct Mount Clean Room
Brand: SMC

SMC 21-CM2R — 10-11-21-22-CDM2R Air Cylinder Direct Mount Clean Room

The SMC 21-CM2R is an official catalog model of the CM2 Stainless Steel Cylinder featuring the 21 clean series designation with relief type, copper, fluorine, and silicon-free construction, and low particle generation. This component supports bore sizes of 20mm, 25mm, 32mm, and 40mm, bottom or front mounting styles, Rc, NPT (TN), or G (TF) port threads, and configurable stroke lengths from 25mm to 300mm with either male or female rod ends. Built-in magnet options and various solid state or reed auto switches with multiple lead wire and prewired connector configurations are available. Submit the exact part number, quantity, and application requirements to request a quote.

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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-CM2R
Product series: CM2 Stainless Steel Cylinder
Data verification: Manufacturer evidence reviewed

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Exact part-number verificationTechnical properties are matched to 21-CM2R.

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)
M2R: M2R
Mounting: A (Bottom Mounting Style), B (Front Mounting Style)
Bore Size: 20mm, 25mm, 32mm, 40mm
Port Thread: Rc, TN (NPT), TF (G)
Stroke: 25mm, 50mm, 75mm, 100mm, 125mm, 150mm, 200mm, 250mm, 300mm
Rod End Thread: Male Rod Thread, F (Female Rod Thread)
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.

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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-CM2R. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.