The SMC CDJ2B16-60Z-A is a compact round-body pneumatic cylinder in SMC’s CJ2/CDJ2 series, intended for reliable linear motion in automation equipment where installation space is limited but repeatable performance is still required. The model code corresponds to a 16 mm bore and 60 mm stroke configuration (the “CDJ2” family is the magnet/auto-switch-compatible version of the CJ2 platform). This makes it a common choice for light-duty push/pull motion, part separation, stopper mechanisms, and compact fixture actuation in assembly and packaging systems.
Unlike larger tie-rod cylinders, the CJ2/CDJ2 family uses a streamlined round-body format, which helps reduce envelope size and simplifies mounting in dense machine layouts. SMC’s CJ2 catalog also shows multiple mounting styles and port-location variants, so the same core cylinder platform can be adapted to different machine structures with fewer redesigns. For integrators and maintenance teams, this is useful because it standardizes spare parts and improves interchangeability across stations.
Key Product Specifications
| Item | Specification / Reference |
|---|---|
| Brand | SMC |
| Series | CJ2 / CDJ2 (round body cylinder family) |
| Model | CDJ2B16-60Z-A |
| Cylinder Type | Pneumatic cylinder, double acting, single rod |
| Bore Size | 16 mm |
| Stroke Length | 60 mm |
| Working Fluid | Air |
| Maximum Operating Pressure | 0.7 MPa |
| Proof Pressure | 1.0 MPa |
| Ambient / Fluid Temperature | -10°C to 70°C (without auto switch), -10°C to 60°C (with auto switch) |
| Cushion | Rubber bumper / air-cushion variants exist in CJ2 family (depends on suffix configuration) |
| Lubrication | Non-lube (not required) |
| Piston Speed | 50 to 750 mm/s (rubber bumper type), up to 1000 mm/s for air-cushion variants in catalog family data |
| Port Thread | M5 x 0.8 (CJ2 16 mm bore dimensional tables) |
| Standard Stroke Availability (16 mm bore family) | Includes 60 mm among standard strokes |
The CJ2 series catalog provides the core performance data (pressure, temperature, lubrication, speed range, etc.), and the 16 mm bore dimensional tables show M5 thread/port details used on this cylinder size. The exact CDJ2B16-60Z-A model is also listed by distributors as a 16 mm × 60 mm unit.
Product Weight (Catalog Reference)
For your requirement on weight, the catalog reference mass for the 16 mm bore / 60 mm stroke CJ2 standard cylinder (basic mounting group) is approximately 109 g (0.109 kg), based on the SMC CJ2 series weight table (bore 16, 60 stroke, basic/axial piping entries). The same table also shows slightly different values depending on mounting style (for example, double clevis or head-side bossed configurations).
Weight Notes (important)
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109 g is the catalog cylinder mass reference from the CJ2 weight table for the 16 mm × 60 mm standard type entry.
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Actual shipped weight can be higher if the product includes:
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auto switch(es)
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lead wire(s)
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brackets
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fittings
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special options
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Some distributor pages publish logistics weight (packing/shipping weight), which is not the same as the bare cylinder mass.
If you are preparing a quotation or engineering BOM, it is good practice to list:
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Cylinder catalog mass, and
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Estimated packed/shipping weight separately.
That avoids confusion in freight calculations and machine payload calculations.
Product Features and Engineering Advantages
1) Compact round-body design for tight machine layouts
The CJ2/CDJ2 platform is designed for compact pneumatic motion. Compared with bulkier cylinders, the round-body format is easier to install in narrow frames, slide units, and guarding-limited assemblies. This is especially useful in automated fixtures where multiple actuators sit close together and tubing space is limited. SMC’s dimensional pages also show consistent geometric patterns across mounting variants, which helps when standardizing machine designs.
2) 16 mm bore with 60 mm stroke for balanced force and travel
A 16 mm bore is a practical mid-size choice in miniature/compact pneumatic cylinders. It offers more thrust than 10 mm bore versions while still keeping the cylinder body compact. A 60 mm stroke is long enough for many practical automation movements, such as:
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pushing a part into position
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opening/closing a small mechanism
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shifting a guide or stop
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actuating a latch or clamp linkage
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performing short transfer motion between two indexed positions
Because 60 mm is a standard stroke in the CJ2 16 mm family, replacement and sourcing are generally easier than relying on special intermediate strokes.
3) Industrial operating range and non-lube design
SMC specifies the CJ2 family for 0.7 MPa maximum operating pressure and non-lubricated operation, which is a standard requirement in many factory air systems. For OEMs and maintenance teams, non-lube operation reduces maintenance complexity and avoids compatibility issues caused by inconsistent lubricator settings. The catalog temperature range also covers most normal indoor industrial environments.
4) Auto-switch compatibility for position detection
The CJ2 catalog notes that auto switch mounting is supported (band mounting type), which is one of the practical reasons many users choose the CDJ2 variant family. In real applications, this enables simple end-position sensing for:
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PLC interlocks
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sequence confirmation
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jam detection
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cycle timing logic
This helps improve reliability in automated equipment without moving to a more complex electric actuator.
Typical Applications
| Application Scenario | Why CDJ2B16-60Z-A Fits |
|---|---|
| Compact assembly fixture | Small body size and 60 mm travel support precise fixture actuation |
| Part stopper / ejector | 16 mm bore provides practical thrust for light-to-medium components |
| Packaging mechanism | Pneumatic speed and simple controls suit repetitive cycles |
| Sensor-assisted automation | CDJ2 family supports auto-switch mounting for stroke-end detection |
| OEM machine modules | Standardized CJ2/CDJ2 family reduces design and spare-parts complexity |
| Retrofit replacement | Common SMC CJ2/CDJ2 platform is widely recognized in industrial maintenance |
This model is particularly well-suited to applications where a machine designer needs a dependable pneumatic actuator with a moderate stroke length, compact footprint, and SMC ecosystem compatibility (switches, fittings, brackets, and standard pneumatic integration practices).
Installation and Selection Considerations
Air quality and speed control
Even though the CJ2/CDJ2 family is mechanically simple, service life depends heavily on air quality and speed adjustment. Use filtered, dry compressed air and set speed with flow controls to avoid excessive impact at the stroke end, especially when driving a hard stop or an external linkage. SMC’s specified speed ranges are achievable only when the load, tubing, and valve sizing are matched properly.
Confirm the suffix configuration before ordering
The CJ2/CDJ2 series uses suffixes for mounting, port orientation, cushioning, and switch-related variations. The base performance is similar across the family, but dimensions and weight can shift slightly depending on the exact suffix combination. For purchasing and replacement work, always confirm:
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bore size
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stroke
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mounting style
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port orientation
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cushion type
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switch requirement (if any)
This is particularly important when replacing a field-installed unit where the physical mounting arrangement matters as much as the bore/stroke.
SEO-Friendly Product Summary (English)
SMC CDJ2B16-60Z-A is a compact round-body pneumatic cylinder from the CJ2/CDJ2 series, designed for reliable linear motion in industrial automation equipment. This model is a double-acting, single-rod air cylinder with a 16 mm bore and 60 mm stroke, suitable for assembly fixtures, part stoppers, packaging mechanisms, and compact machine modules. The CJ2 family supports non-lube operation, a maximum operating pressure of 0.7 MPa, and practical pneumatic speed ranges for repetitive production cycles.
