Stainless steel barrel
Cold-drawn SUS tube, honed internally. No flaking paint and no corrosion track where the piston travels.
CDJ2D series · bore ⌀16 mm
Stainless mini cylinder that keeps its seal
A double-acting ⌀16 mm pneumatic cylinder with a SUS stainless tube, a 20 µm chrome-plated rod and an oil-reservoir piston seal. 17 strokes from 5 to 200 mm. One part number per stroke, no adapters needed.
$9.90From · per unit
In stock: 17 strokesShips in 24 hM5 portsBuilt-in magnet
Ships in 24 hours
Stocked in all 17 stroke lengths. Tracked air freight to the US, EU and Asia.
Stainless, not painted
SUS tube with a 20 µm chrome rod: no rust ring where the rod enters the seal.
Buy 1 or 500
Single units for a test rig, tiered pricing above 50 and 200 pieces.
Drawing on request
2D and 3D files for every stroke, sent the same working day.
$12.90per unit
CDJ2D16-25-B
Stroke118 mm OAL
Quantity
Part number: CDJ2D16-25-B
in stock
Overall length 118 mm · body length 93 mm + stroke
Order before 14:00 UTC and it leaves the same working day.
Short answer
The CDJ2D16 is a double-acting, ⌀16 mm bore mini pneumatic cylinder made with a stainless steel tube and a hard-chromed piston rod. It is available in 17 stroke lengths from 5 mm to 200 mm (part numbers CDJ2D16-5-B to CDJ2D16-200-B), uses M5 × 0.8 air ports and an M5 × 0.8 rod thread, and has a magnetic piston for CS1-M or D-C73 reed switches. Overall length in mm is 93 plus the stroke. It is used for short-stroke clamping, pushing, lifting and gate-actuation tasks in packaging, assembly and automation equipment.
What is actually different
Six construction details that decide whether a mini cylinder still seals at 1 million cycles.
20 µm chrome rod
Ground, then hard-chrome plated to 20 µm, so the rod resists pitting from condensate in compressed air.
Oil-reservoir piston seal
The piston seal stores lubricant and feeds it back to the bore, which keeps friction low when the air line is dry.
Sealed front nose
Pressed-in front seal and a bronze guide take the side load, so a misaligned clevis does not start a leak.
Magnetic piston
A magnet ring is standard, so CS1-M or D-C73 reed switches mount in the groove without a separate band.
Rubber bumpers both ends
End-of-stroke impact is absorbed internally; the cylinder runs quieter and the tube does not ovalise.
Specifications
Data for the whole CDJ2D16 range. Stroke-specific values are in the dimension table.
| Performance | |
|---|---|
| Bore size | ⌀16 mm |
| Action | Double acting |
| Working pressure | 0.1 – 0.7 MPa (15 – 100 psi) |
| Proof pressure | 1.05 MPa |
| Piston speed | 50 – 500 mm/s |
| Operating temperature | −10 to 60 °C |
| Cushioning | Rubber bumper, both ends |
| Stroke tolerance | +1.0 / 0 mm |
| Ports and threads | |
|---|---|
| Air port | M5 × 0.8 |
| Piston rod thread | M5 × 0.8 |
| Mounting | Front nose thread with lock nut, rear clevis |
| Construction | |
|---|---|
| Cylinder tube | Stainless steel (SUS), honed |
| Piston rod | Chrome-plated, 20 µm |
| Seals | NBR with oil reservoir |
| Magnet | Built-in, for CS1-M / D-C73 switches |
| Media | Filtered air, 40 µm, lubricated or dry |
| Stroke range | 5 – 200 mm, 17 steps |
Dimensions
Overall length grows linearly with stroke. All dimensions in millimetres.
| Stroke | Part number | Overall length |
|---|---|---|
| 5 mm | CDJ2D16-5-B | 98 mm |
| 10 mm | CDJ2D16-10-B | 103 mm |
| 15 mm | CDJ2D16-15-B | 108 mm |
| 20 mm | CDJ2D16-20-B | 113 mm |
| 25 mm | CDJ2D16-25-B | 118 mm |
| 30 mm | CDJ2D16-30-B | 123 mm |
| 35 mm | CDJ2D16-35-B | 128 mm |
| 40 mm | CDJ2D16-40-B | 133 mm |
| 45 mm | CDJ2D16-45-B | 138 mm |
| 50 mm | CDJ2D16-50-B | 143 mm |
| 60 mm | CDJ2D16-60-B | 153 mm |
| 75 mm | CDJ2D16-75-B | 168 mm |
| 100 mm | CDJ2D16-100-B | 193 mm |
| 125 mm | CDJ2D16-125-B | 218 mm |
| 150 mm | CDJ2D16-150-B | 243 mm |
| 175 mm | CDJ2D16-175-B | 268 mm |
| 200 mm | CDJ2D16-200-B | 293 mm |
Nose 15 / 8 mm, front shoulder 12.5 mm, rear clevis 27.5 mm and port thread M5 × 0.8 are constant across the series.
Theoretical thrust at the rod
Extension force of a ⌀16 mm bore, calculated as pressure × piston area (201 mm²). Use 60–70 % of these values for real sizing.
| Air pressure | Extension force |
|---|---|
| 0.4 MPa | 80 N · 8.2 kgf |
| 0.5 MPa | 101 N · 10.3 kgf |
| 0.6 MPa | 121 N · 12.3 kgf |
| 0.7 MPa | 141 N · 14.4 kgf |
Values are theoretical. Allow for friction, seal drag and the load direction.
Where this cylinder fits
Short strokes, high cycle counts, and an environment where rust would show.
Packaging machines
Film clamp, flap folding and date-stamp actuation on form-fill-seal lines.
Assembly fixtures
Part locating and ejector pins where a 5–30 mm stroke is enough.
Door and gate interlocks
Guard locking on machine enclosures, with a reed switch for position feedback.
Food and beverage
Stainless barrel survives washdown splash where a painted body would rust at the seam.
Textile and printing
Tension rollers, knife actuation and registration stops.
Lab and test rigs
Repeatable low-force clamping with a magnetic position signal.
CDJ2D16 vs. other ⌀16 options
A fair look at when this part is the wrong choice.
| CDJ2D16 stainless | ISO 6432 round cylinder | SDA compact | |
|---|---|---|---|
| Body material | Stainless steel | Anodised aluminium | Anodised aluminium |
| Rod | Chrome 20 µm | Chrome | Chrome |
| Stroke range | 5 – 200 mm | 25 – 500 mm | 5 – 100 mm |
| Port size | M5 | G1/8 | M5 |
| Best for | Corrosive, splash, dry air | Long stroke, heavy load | Tight space, square body |
| Weak point | Stroke above 250 mm | Rust on aluminium in washdown | Shorter stroke range |
Pneumatic catalogue
1168 models across five families, sourced from the same workshops we ship the CDJ2D16 from.
Frequently asked
What pressure can the CDJ2D16 run at?
0.1 to 0.7 MPa (15 to 100 psi) working pressure, 1.05 MPa proof. At 0.5 MPa the theoretical extension force is about 100 N (10 kgf).
How do I choose a stroke?
Pick the stroke that covers your travel plus 5–10 mm of clearance. Overall length is 93 mm plus the stroke, so a 50 mm stroke is 143 mm long.
Does it come with a magnetic switch?
The piston is magnetic and the barrel has a switch groove. CS1-M and D-C73 reed switches fit directly; switches are ordered separately.
Is it double acting?
Yes. Two M5 air ports, one at each end, so both extension and retraction are powered and no return spring is needed.
Can I use it with dry, oil-free air?
Yes. The piston seal holds a lubricant reservoir, so it keeps sealing on a dry line. If you already run lubricated air, keep lubricating consistently.
What is the lead time?
All 17 strokes are stocked. Orders placed before 14:00 UTC leave the same working day; transit is typically 3–6 working days with tracked air freight.
Do you ship to my country?
We ship worldwide with tracked couriers. Duties and import VAT are payable by the buyer unless your checkout shows them included.
Can I get a 2D or 3D drawing?
Yes. Send the stroke you need through the contact form and we return STEP and DXF files the same working day.
Ask for a quote or a drawing
Tell us the stroke, quantity and country. We answer within one working day.
Shipping and payment
Dispatch
Same working day for orders before 14:00 UTC. Tracking number by email.
Delivery
3–6 working days to the US and EU, 2–4 days within Asia, 5–9 days to South America.
Rates
Flat 9.90 USD worldwide, free above 120 USD.
Payment
Card via Stripe, or bank transfer against a proforma invoice for company purchases.
Visa · Mastercard · Amex · Apple Pay · Bank transfer / proforma invoice
New strokes and price updates
One email a month. No catalog spam.