This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X175-10, 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.

The AirTAC ACPJ Adjustable Compact Cylinder ACPJ20X175-10 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X175-10 (ISO 21287 ACE), in the same bore, stroke and force class.
This double acting compact cylinder carries a 20 mm bore with a 175 mm made-to-order stroke and a 10 mm adjustment window: an external stop screw trims the extend stroke on site anywhere between 165 and 175 mm, so one unit can serve several jig depths without re-plumbing. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, and in practice you should plan on roughly 94 N (about 9.6 kg of vertical lift) of usable work rather than the full rating. The 175 mm stroke exceeds the 100 mm standard limit for bore 20, so it is built to order.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight gantries and guarding where a full-length body cannot. A hard-anodized aluminium body with an S45C hard-chrome rod, fixed TPU bumpers at both ends and M5x0.8 ports round out the build. Note this model is discontinued: the current-production direct is the ACEJ20X175, and you should confirm the ISO 21287 mounting dimensions before swapping. No magnet is fitted on this version, so position switches cannot be mounted unless you order the -S code.
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X175-10 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X175-10 |
| Bore size | Ø20 mm |
| Stroke | 175 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 ACEJ20X175-10 (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.
| 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).
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -10 | 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).
With a body about 50% shorter than an ISO 15552 profile cylinder, the 175 mm stroke fits inside a compact pick frame that pushes sample trays between stations at 30-500 mm/s.
The 117.8 N pull at 0.5 MPa retracts a flap-tucking blade into a tight folding head, and the stop screw sets the exact extend depth for each carton size.
Remember the stop screw is a mechanical end stop only - on air loss the piston still drifts, so it is not a load-holding brake. FA/FB flange and LB foot mountings bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switches if you need end-of-stroke signalling. Order the ACEJ20X175 as the current replacement and verify ISO 21287 mounting dimensions first.
Replacement checklist
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N. Theoretical maximum is 32 kgf at 1.0 MPa.
The -10 code adds a stop screw that shortens the extend stroke by up to 10 mm, giving a usable 165-175 mm range; it cannot lengthen the stroke past 175 mm. This model is discontinued - the current-production direct is the ACEJ20X175 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACPJ follows the older DIN-standard footprint.
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X175-10 replacement — usually within 7-8 hours.