This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X250B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X250B in place of this model. 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 ACPD Double Rod Compact Cylinder ACPD50X250B
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD50X250B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 250mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X250B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke250 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM10×1.5
- StatusDiscontinued → ACED50X250B
- 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 ACPD Double Rod Compact Cylinder ACPD50X250B
A double acting compact cylinder with a rod leaving both covers, the ACPD50X250B delivers 881.2 N at 0.5 MPa in each direction because both strokes work on the rod-side area of the 50 mm bore. The through-rod resists rotation and side load, gives a symmetric mount, and lets the rear rod carry a sensor flag, while fixed TPU bumpers decelerate the piston at each end. This model is discontinued; the current-production drop-in is the ISO 21287 ACED50X250 in the same bore, stroke and force class.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight packaging gantries and test rigs. At 0.7 MPa output rises to 1233.7 N both ways, with a peak of 179.7 kgf at 1.0 MPa. Plan on roughly 529 N of usable work at 0.5 MPa, which lifts about 27 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, runs 30-500 mm/s on air filtered to 40 um, and accepts 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating from -20 to +70 C.
Airtac ACPD Double Rod Compact Cylinder ACPD50X250B Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X250B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X250B |
| Bore size | Ø50 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| 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 ACED50X250B (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 | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACPD Double Rod Compact Cylinder ACPD50X250B
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 (adjustable stroke).
Where the Airtac ACPD Double Rod Compact Cylinder ACPD50X250B Is Used
Case ejector on a carton line
The 250 mm stroke pushes filled cartons off a conveyor at up to 500 mm/s, and the 881.2 N output both ways lets the same cylinder retract under load without a larger bore.
Benchtop fatigue test rig
The through-rod resists the side load of a swinging fixture, and the rear rod carries a position flag for end-of-stroke confirmation on cyclic pull-push testing.
Pallet-stacker mast guide
Symmetric double-rod mounting keeps the guide roller centered under vibration, with the fixed TPU bumpers absorbing the mast reaching either end of travel.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD50X250B with the ACED50X250B
Size down to the ACPD32X250 if your job needs only 345.6 N at 0.5 MPa, or step up to the ACPD63X250 for 1458.1 N. This unit has no magnet fitted: order the -S code (ACPD50X250BS) if you want CMSE or DMSE switches, otherwise no sensing is possible. The B code gives a male M10x1.5 rod thread and the 1/8" PT port; FA/FB flange or LB foot brackets bolt to the standard face. Note that a plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check for held loads. Confirm ISO 21287 mounting dimensions before swapping to the ACED50X250.
Replacement checklist
- ✓ Current-production ACE → ACED50X250B
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPD Double Rod Compact Cylinder ACPD50X250B FAQ
Because a rod exits both covers, force is equal in both directions: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa, peaking at 179.7 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s, on air filtered to 40 um.
The short ISO 21287-class aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end and FA/FB flange or LB foot mounting. The ACPD50X250B is discontinued; the current drop-in is the ACED50X250 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACED50X250B
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X250B replacement — usually within 7-8 hours.