This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X25-20B, 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 ACPJ16X25-20B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X25-20B 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 ACEJ16X25-20B (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 → ACEJ16X25-20B
- 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 ACPJ16X25-20B
This AirTAC cylinder is double acting with an adjustable stroke: air drives the rod out and pulls it back, and a stop screw trims the extend stroke anywhere in the ordered 20 mm window, so the 25 mm stroke can be set from 5 to 25 mm on site. At 0.5 MPa the 16 mm bore delivers 100.5 N push and 75.4 N pull, rising to 140.7 N at 0.7 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight jigs and guarding where a full-length body will not. Note this ACPJ family is discontinued; the current-production drop-in is ACEJ16X25.
The male rod thread (B code) bolts straight to I/Y knuckles, and FA flange or LB foot mounts attach to the same face. Fixed TPU bumpers at both ends decelerate the piston, and the body is hard-anodized aluminium with an S45C hard-chrome rod. A practical sizing rule: plan on roughly 60 N of real work at 0.5 MPa, which lifts about 5 kg vertically with a 2:1 margin. The magnet is not fitted on this version - order the -S code if you need CMSE / DMSE switch sensing. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X25-20B |
| 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 ACEJ16X25-20B (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 ACPJ16X25-20B
| 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 ACPJ16X25-20B Is Used
Fixture clamp with set stroke
Clamps thin aluminium brackets on a small CNC fixture; the 20 mm window lets you trim the 25 mm stroke so the male-threaded rod pad lands exactly on the part without crushing it.
Carton push-off on a packing bench
Ejects folded cartons from a magazine into a glue station; 100.5 N push at 0.5 MPa is enough for lightweight boxes, and the short body fits under a low guard frame.
Escalate to sensed version
On a parts-presence check station, order the -S variant of this bore so CMSE or DMSE switches can report end positions; this non-S unit has no magnet to trigger them.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-20B with the ACEJ16X25-20B
Size between bores: at 0.5 MPa the 12 mm bore pushes 56.5 N while the 20 mm bore pushes 157.1 N, so this 16 mm model at 100.5 N sits in the middle for light clamping and positioning. The stop screw is a mechanical end stop for the extend stroke only - it does not lock the piston mid-stroke, and on air loss the rod still drifts, so add a separate holding valve if the load must stay put. If you need position feedback, specify the -S magnet version instead; this unit has no magnet. For new designs, order the current ACEJ16X25 and confirm the ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X25-20B
- ✓ 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 ACPJ16X25-20B 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. The -20 code gives a 20 mm adjustment window, so the 25 mm extend stroke can be trimmed to anywhere between 5 and 25 mm with the stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8, rod thread male (B code).
The ACPJ family is no longer in production. The current-production replacement is ACEJ16X25 (swap the P for an E), an ISO 21287 compact cylinder in the same bore, stroke and force class. Because the ACP was built to a DIN-standard body, confirm the ISO 21287 mounting dimensions against your fixture before swapping, and add the -S code if you want the optional magnet for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X25-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X25-20B replacement — usually within 7-8 hours.