This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X70-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X70-50 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 ACPJ Adjustable Compact Cylinder ACPJ12X70-50
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50 is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 70mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X70-50 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke70 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X70-50
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50
This double acting compact cylinder trims its extend stroke on site: the -50 code gives a 50 mm stop-screw window, so the 70 mm stroke can be shortened anywhere down to 20 mm. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa). Note that the 70 mm stroke exceeds the 50 mm standard maximum for this bore, so it is made to order, and the ACPJ family is discontinued - ACEJ12X70 is the current-production replacement.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits slim jigs and guarding frames. A fixed TPU bumper sits at both ends, and the hard-anodized aluminium body carries an S45C hard-chrome rod with a female M3x0.5 thread. As a planning figure, treat about 34 N (roughly 3 kg lifted vertically with margin) as the practical output at 0.5 MPa. No magnet is fitted on this version; the optional -S code adds one for CMSE / DMSE switches.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X70-50 |
| Bore size | Ø12 mm |
| Stroke | 70 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ12X70-50 (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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACEJ12X70-50 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -50 | 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 (adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50 Is Used
Micro part ejection from press dies
The 56.5 N push at 0.5 MPa is enough to strip small stamped clips or pins off a die, and the 20-70 mm adjustable range lets the operator tune the eject travel per tool.
Lab sample pusher in compact analyzers
With an M5x0.8 port and a body far shorter than an ISO 15552 profile cylinder, this bore fits inside tight analyzer housings that move lightweight sample trays.
Small carton flap tuck on packaging lines
The 42.4 N pull at 0.5 MPa retracts a light flap-tucking lever, and the stop screw sets the exact extend position for each carton size.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-50 with the ACEJ12X70-50
At 12 mm bore you are at the bottom of the ACPJ range: 56.5 N push at 0.5 MPa versus 100.5 N for the 16 mm bore and 157.1 N for the 20 mm bore. Step up if your part weight or clamp force approaches the 34 N practical working band of this size. The stop screw shortens the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the rod will still drift if air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switch position feedback. Before ordering, confirm the ISO 21287 mounting dimensions of the ACEJ12X70 replacement against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X70-50
- ✓ 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 ACPJ12X70-50 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with a 50 mm stop-screw window trimming the 70 mm stroke down to 20 mm, running at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air. The 70 mm stroke is non-standard for this 12 mm bore (standard maximum is 50 mm), so it is made to order. The model is discontinued; ACEJ12X70 is the drop-in successor.
An external stop screw shortens the extend stroke anywhere within the ordered 50 mm window - it sets an end position, it does not hold or brake a load mid-stroke, and the rod still drifts on air loss. A fixed TPU bumper decelerates the piston at each end. For switching, the magnet is not fitted on this version; you must order the -S variant to enable CMSE or DMSE reed or solid-state switches. Mounting is via FA/FB flange or LB foot on the standard face, and the ACEJ12X70 replacement should be checked against ISO 21287 dimensions before swapping.
Related AirTAC ACE Cylinders
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