This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X40-20S, the same code under the new prefix. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X40-20S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X40-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X40-20S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S
The ACPJ16X40-20S is a double acting compact cylinder with an adjustable extend stroke: the -20 code gives a 20 mm stop-screw window, so the 40 mm stroke can be trimmed anywhere between 20 and 40 mm on site. It is discontinued; the current-production drop-in is the ACEJ16X40, which carries the same bore, stroke and force class. Push force is 100.5 N and pull 75.4 N at 0.5 MPa, rising to 140.7 N at 0.7 MPa.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits cramped jigs and guarding. A practical sizing check: about 60 N of the rated push is realistic working force at 0.5 MPa, which lifts roughly 6 kg vertically - halve that for a 2:1 margin and match parts up to about 3 kg. The -S magnet is fitted, so CMSE / DMSE switches can be clamped straight onto the body, and a fixed TPU bumper sits at both ends.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X40-20S |
| Bore size | Ø16 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed bumper (both ends) |
| Max standard stroke | Up to 75 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ16X40-20S (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
Theoretical Output Force (Ø16mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 75 N |
| 0.7 MPa | 106 N |
| Max (@1.0 MPa) | 15 kgf |
ACPJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (double rod, adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S Is Used
Small-parts press fit
Trim the stroke to 28 mm so a 100.5 N push seats bearings or dowels into aluminium housings without bottoming the tool.
Gated assembly station
The fitted -S magnet lets CMSE switches report extend and retract on a 20-40 mm window inside a compact guarding cell.
Packaging line kicker
About 6 kg of vertical equivalent at 0.5 MPa nudges cartons or trays sideways on a conveyor where a full-length cylinder will not fit.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S with the ACEJ16X40-20S
At 16 mm bore this sits mid-range: the 12 mm bore pushes 56.5 N at 0.5 MPa, while the 20 mm bore reaches 157.1 N, so step up if your part weight exceeds about 6 kg equivalent. The stop screw only shortens the extend stroke - it is not a mid-stroke lock, and on air loss the piston still drifts, so add an external stop for load holding. FA/FB flange and LB foot mountings plus I/Y rod knuckles bolt to the standard face. Order the ACEJ16X40 as the current replacement and confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X40-20S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-20S FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa push is 140.7 N and pull 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. Plan on about 60 N of usable push at 0.5 MPa, which lifts roughly 6 kg vertically - use about 3 kg for a 2:1 margin. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8, rod thread female M4x0.7.
The -20 code is a 20 mm window: an external stop screw shortens the 40 mm extend stroke anywhere down to 20 mm; it cannot lengthen it. Fixed TPU bumpers decelerate at both ends. This model is discontinued - the ACEJ16X40 is the current ISO 21287 drop-in with the same bore, stroke and force class, so confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X40-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X40-20S replacement — usually within 7-8 hours.