This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X20-20S, 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 ACPJ20X20-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ20X20-20S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X20-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X20-20S
- 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 ACPJ20X20-20S
The ACPJ20X20-20S is a discontinued double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 20 mm stroke anywhere within the ordered 20 mm window, so the usable range is 0-20 mm. Because the short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight pick-and-place heads and guarding where a full-length body will not reach.
The -S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke signalling. A fixed TPU bumper sits at both ends to soften arrival, and the hard-anodized aluminium body with an S45C hard-chrome rod runs on 0.15-1.0 MPa (22-145 psi) air at 30-500 mm/s. This model is discontinued - the current direct is the ACEJ20X20, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X20-20S |
| Bore size | Ø20 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ20X20-20S (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 (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 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 ACPJ20X20-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 ACPJ20X20-20S Is Used
Position-verified clamping on test benches
With the -S magnet fitted, CMSE or DMSE switches confirm the clamp has reached its trimmed stop before a leak or electrical test starts, on a body short enough to fit inside the bench guarding.
Light vertical lift in a pick head
The 10 mm rod and about 8 kg vertical-lift equivalent at 0.5 MPa suit raising small connectors or vials into a nozzle, with the TPU bumpers absorbing the touchdown at each end.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20S with the ACEJ20X20-20S
The stop screw only shortens the extend stroke; it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Match FA/FB flange or LB foot mounts and I/Y rod knuckles to your fixture, and remember the magnet here is the optional -S fitment that this model carries, enabling CMSE / DMSE switches.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X20-20S
- ✓ 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 ACPJ20X20-20S FAQ
The -20 code is a 20 mm adjustment window: the external stop screw shortens the 20 mm extend stroke on site, giving a usable range of 0-20 mm. It cannot lengthen the stroke past the ordered 20 mm, and the stop is not a load-holding brake - on air loss the piston still drifts. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s, and the port is M5x0.8 with a female M6x1.0 rod thread.
No - the ACPJ family is discontinued. The current-production direct is the ACEJ20X20 (swap the P for an E), which matches the same 20 mm bore, 20 mm stroke and force class in the ISO 21287 short-body format. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions and your FA/FB flange or LB foot interface before ordering the swap. The ACEJ also carries the optional -S magnet for CMSE / DMSE switches, so your sensor layout can carry over.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X20-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X20-20S replacement — usually within 7-8 hours.