21-CDJ2

Name: SMC 21-CDJ2 — 10-11-21-22-CDJ2 Air Cylinder 6mm Bore Double Acting Single Rod Clean Room
Brand: SMC

SMC 21-CDJ2 — 10-11-21-22-CDJ2 Air Cylinder 6mm Bore Double Acting Single Rod Clean Room

The SMC 21-CDJ2 is an official catalog model of the CJ2 Small Bore Actuator featuring a Clean Series 21 relief type configuration that is copper, fluorine, and silicon-free with low particle generation. This unit is available with bore sizes of 6mm, 10mm, or 16mm, stroke lengths ranging from 15mm to 200mm, and multiple mounting options including basic, bossed, flange, and foot styles. Users can configure the actuator with rubber bumper or air cushions, built-in magnets, axial or perpendicular head cover ports, and various solid-state or reed auto switches. Submit your exact part number, quantity, and application requirements to receive a formal quotation.

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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-CDJ2
Product series: CJ2 Small Bore Actuator
Data verification: Manufacturer evidence reviewed

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

Verified configuration

Technical Specifications

6: 6
Product Series: CJ2 Small Bore Actuator
Configuration Status: Official catalog model
Clean Series: 10 (Relief Type), 11 (Vacuum Suction Type), 21 [Relief Type (Copper, Fluorine and Silicon-free + Low Particle Generation)], 22 [Vacuum Suction Type (Copper, Fluorine and Silicon-free + Low Particle Generation)]
-: -
C: C
Magnet: None, D (Built-in Magnet)
J2: J2
Mounting: B (Basic Style), E (Double-side Bossed), F (Rod Side Flange Style), G (Head Side Flange Style), L (Single Foot Style), M (Double Foot Style)
Stroke: 15mm, 30mm, 45mm, 60mm, 75mm, 100mm, 125mm, 150mm, 175mm, 200mm
Cushion: Rubber Bumper, Standard, A (Air Cushion)
Head Cover Port: 90° to Axis, R (Axial)
Auto Switch: No Switch, M9B--Solid State, Gen. Purpose, 2 Wire, Horizontal, M9BA--Solid State, Water Resist., 2 Wire, Horizontal, M9BAV--Solid State, Water Resist., 2 Wire, Vertical, M9BV--Solid State, Gen. Purpose, 2 Wire, Vertical, M9BW--Solid State, 2-color Indication, 2 Wire, Horizontal, M9BWV--Solid State, 2-color Indication, 2 Wire, Vertical, M9N--Solid State, Gen. Purpose, 3 Wire NPN, Horizontal, M9NA--Solid State, Water Resist., 3 Wire NPN, Horizontal, M9NAV--Solid State, Water Resist., 3 Wire NPN, Vertical, M9NV--Solid State, Gen. Purpose, 3 Wire NPN, Vertical, M9NW--Solid State, 2-color Indication, 3 Wire NPN, Horizontal, M9NWV--Solid State, 2-color Indication, 3 Wire NPN, Vertical, M9P--Solid State, Gen. Purpose, 3 Wire PNP, Horizontal, M9PA--Solid State, Water Resist., 3 Wire PNP, Horizontal, M9PAV--Solid State, Water Resist., 3 Wire PNP, Vertical, M9PV--Solid State, Gen. Purpose, 3 Wire PNP, Vertical, M9PW--Solid State, 2-color Indication, 3 Wire PNP, Horizontal, M9PWV--Solid State, 2-color Indication, 3 Wire PNP, Vertical, A90--Reed, AC Volt, Horizontal
Lead Wire or Prewired Connector: 0.5m (Or None in the Case of No Switch), M (1m), L (3m), Z (5m)
Number: 2 pcs. (Or None in the Case of No Switch), 3 pcs., 4 pcs., S (1 pc.)
Series: J2
Bore Size: 6mm, 10mm, 16mm
Head Cover Port Location: Perpendicular to Axis, R (Axial Direction)
Version: None, Z
Auto Switch Mounting Type: None, B (Band Mounting)

Engineering context

Identification and RFQ Guidance

Confirm the exact configuration

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-CDJ2. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.