This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X40-40S, 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 ACPJ16X40-40S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X40-40S 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 ACEJ16X40-40S (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 → ACEJ16X40-40S
- 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 ACPJ16X40-40S
The ACPJ16X40-40S is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 40 mm stroke anywhere within the ordered 40 mm window, so one unit covers a 0-40 mm working range. The 16 mm bore delivers 100.5 N push and 75.4 N pull at 0.5 MPa (140.7 N / 105.6 N at 0.7 MPa, 20.5 kgf theoretical max at 1.0 MPa). The -S code means the optional magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clamped straight onto the hard-anodized aluminium body.
As an ISO 21287 short-body design it saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped jigs and guard brackets. Rule of thumb for sizing: plan on roughly 60 N (about 6 kgf) of real work at 0.5 MPa, and expect it to lift about 5 kg vertically with a 2:1 margin. Note this model is discontinued; the current-production drop-in is the ACEJ16X40 - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-40S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-40S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X40-40S |
| 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 ACEJ16X40-40S (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 ACPJ16X40-40S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -40 | 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 ACPJ16X40-40S Is Used
PCB fixture clamping
The 100.5 N push at 0.5 MPa is enough to hold small circuit boards in a test fixture, and the fitted magnet lets a CMSE switch confirm the clamp is closed.
Small-part ejector on assembly stations
Trims the extend stroke within the 40 mm window to eject machined pins or bushings from a jig, with the TPU bumper softening each end of the 30-500 mm/s cycle.
Gate interlock on a compact guard
The short body fits where an ISO 15552 profile cylinder would not, and the -S magnet with a DMSE switch signals gate-open and gate-closed to the PLC.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-40S with the ACEJ16X40-40S
At 100.5 N push at 0.5 MPa this 16 mm bore suits light clamping and positioning; step down to the 12 mm bore (56.5 N) for tighter spaces or up to the 20 mm bore (157.1 N) when the load grows. The 40 mm adjustment window lets you dial the extend stroke down on site without changing cylinders. The stop screw is a mechanical end stop only - it does not hold a load mid-stroke if air is lost. FA/FB flange and LB foot mountings plus the fitted -S magnet for CMSE / DMSE switches make fixture integration easy. For new designs, order the ACEJ16X40, the current replacement in the same bore, stroke and force class.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X40-40S
- ✓ 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 ACPJ16X40-40S FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa that rises to 140.7 N push and 105.6 N pull, with a theoretical maximum of 20.5 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 40 mm extend stroke on site, giving a usable range of 0-40 mm. It shortens the stroke only and acts as a mechanical end stop, not a load-holding brake.
No - the ACPJ family is discontinued. The current-production drop-in is the ACEJ16X40 (swap the P for an E), an ISO 21287 compact cylinder in the same bore, stroke and force class with the same FA/FB flange and LB foot mounting family. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. The port is M5x0.8, the rod thread is female M4x0.7, and the fixed TPU bumper at both ends is not adjustable.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X40-40S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X40-40S replacement — usually within 7-8 hours.