This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE50X90S, 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 ACP Compact Cylinder ACP50X90S
The AirTAC ACP Compact Cylinder ACP50X90S is a double acting DIN-standard tight/compact air cylinder with a Ø50mm bore and 90mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE50X90S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke90 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.5
- StatusDiscontinued → ACE50X90S
- 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 ACP Compact Cylinder ACP50X90S
A double acting compact cylinder in the DIN-standard ACP series, the ACP50X90S pairs a 50 mm bore with a 90 mm stroke and comes with the optional -S magnet already fitted, so CMSE or DMSE reed and solid-state switches can be mounted directly on the hard-anodized aluminium body. At 0.5 MPa it pushes 981.7 N and pulls 881.2 N; at 0.7 MPa those figures rise to 1374.4 N and 1233.7 N, with a theoretical ceiling of 200.2 kgf at 1.0 MPa. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight jigs and guarding where a full-length body will not fit.
The rod is 16 mm with a female M10x1.5 thread, the air port is 1/8", and a fixed TPU bumper sits at both ends. Note that this model is discontinued: the current-production direct is ACE50X90, so confirm the ISO 21287 mounting dimensions before you swap.
Airtac ACP Compact Cylinder ACP50X90S Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP50X90S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE50X90S |
| Bore size | Ø50 mm |
| Stroke | 90 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE50X90S (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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 kgf | |
The ACE50X90S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACP Compact Cylinder ACP50X90S
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| 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 ACP Compact Cylinder ACP50X90S Is Used
Carton press-down station
With 981.7 N of push at 0.5 MPa, the 50 mm bore seats flaps or presses inserts into shipping cartons on a packaging line, and the 90 mm stroke clears loading by hand.
Fixture clamping on a CNC jig
The short body fits inside tight fixture plates where a full-length profile cylinder cannot, holding machined aluminium housings with about 60 kgf of practical clamping force.
Small-parts lift in an assembly cell
Mounted clevis-down, the cylinder raises a 50 kg pallet of connectors about 90 mm between an assembly bench and an inspection tray, with CMSE switches reporting end positions.
Replacing the Airtac ACP Compact Cylinder ACP50X90S with the ACE50X90S
At 50 mm bore this sits mid-range: a 40 mm bore gives 628.3 N push at 0.5 MPa if you need less force, while a 63 mm bore delivers 1558.6 N for heavier clamping. The 90 mm stroke is well inside the 250 mm maximum standard stroke for this bore, so it is a catalogue item, not a made-to-order build. Mount it on FA/FB flanges, an LB foot or a CA/CB clevis, and add I/Y rod knuckles as needed. Because the piston drifts when air is lost, fit a rod lock or pilot check valve if the load must stay put. Order ACE50X90 as the current replacement and verify ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACE50X90S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACP Compact Cylinder ACP50X90S FAQ
Push is 981.7 N and pull is 881.2 N at 0.5 MPa; at 0.7 MPa push reaches 1374.4 N and pull 1233.7 N, with a theoretical maximum of 200.2 kgf at 1.0 MPa. It is a double acting 50 mm bore, 90 mm stroke unit with a 16 mm rod, 1/8" port, 0.15-1.0 MPa (22-145 psi) operating range, 1.5 MPa (215 psi) proof pressure, -20 to +70 C temperature range and 30-500 mm/s speed.
The S means the optional -S magnet is fitted on this model, so CMSE or DMSE reed and solid-state switches can be clipped onto the body for end-of-stroke sensing; models ordered without the S code carry no magnet. The ACP family is discontinued, and the current-production successor is ACE50X90 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping.
Request a Quote for the ACE50X90S
Send us the quantity and destination. We confirm price, stock and lead time on the ACE50X90S replacement — usually within 7-8 hours.