This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X25-20, 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 ACPJ16X25-20
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X25-20 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X25-20 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X25-20
- 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 ACPJ16X25-20
The -20 code sets a 20 mm adjustment window, so a stop screw trims the extend stroke anywhere in a 5-25 mm range on site. Air supply is 0.15-1.0 MPa (22-145 psi) and rod speed runs 30-500 mm/s.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarded stations. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body carries an S45C hard-chrome rod, and the female M4x0.7 rod thread is standard. Note this model is discontinued: the current-production direct is the ACEJ16X25, so confirm ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on roughly 60 N (about 6 kg of vertical lift) of real work at 0.5 MPa rather than the full rating.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-20 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-20 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X25-20 |
| Bore size | Ø16 mm |
| Stroke | 25 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 ACEJ16X25-20 (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 ACPJ16X25-20
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×25 | 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 ACPJ16X25-20 Is Used
Fixture clamping on small CNC jigs
The 5-25 mm adjustable window lets one cylinder serve several part heights on a machining fixture, with 100.5 N enough for light clamping of aluminium blanks.
Ejection in compact assembly heads
A 25 mm stroke with a 20 mm trim range ejects finished clips or pins from a nest, and the short body fits inside a guarded pick-and-place head.
Push-off on labelling and carton lines
About 6 kg of practical vertical force at 0.5 MPa nudges cartons or blister packs off a conveyor lane where a full-length cylinder will not fit.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-20 with the ACEJ16X25-20
Size both ways: if 100.5 N at 0.5 MPa is more than your load needs, the ACPJ12 delivers 56.5 N in the same compact format; if you need headroom, the ACPJ20 pushes 157.1 N. Remember the stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the rod can drift if air is lost. Mount with FA/FB flanges or LB feet, and order the -S code if you want the optional magnet for CMSE / DMSE switches; this version has no magnet fitted. For new builds, specify the ACEJ16X25 instead, as this ACPJ is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X25-20
- ✓ 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 ACPJ16X25-20 FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa push rises to 140.7 N and pull to 105.6 N. The theoretical maximum at 1.0 MPa is 20.5 kgf. The -20 stop screw trims the extend stroke within a 5-25 mm window, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
An external stop screw shortens the 25 mm extend stroke by up to 20 mm, giving any usable stroke from 5 to 25 mm; it cannot lengthen the stroke past the ordered value. This ACPJ is discontinued - the current-production replacement is the ACEJ16X25 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN-standard footprint.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X25-20
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X25-20 replacement — usually within 7-8 hours.