This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ16X70-50B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ16X70-50B 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 ACPJ16X70-50B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm 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 ACEJ16X70-50B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke70 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X70-50B
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50B
This is a double acting compact cylinder with an adjustable extend stroke: the -50 code gives a 50 mm window, so the stop screw trims the 70 mm stroke anywhere down to 20 mm on site. Bore 16 mm delivers 100.5 N push and 75.4 N pull at 0.5 MPa (rising to 140.7 N at 0.7 MPa), with a male rod thread (B code) on the 8 mm rod and M5x0.8 ports. Note: the ACPJ family is discontinued; the current-production drop-in is the ACEJ16X70, so confirm ISO 21287 mounting dimensions before swapping.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarded stations. The hard-anodized aluminium body carries an S45C hard-chrome rod, a fixed TPU bumper at each end, and runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). No magnet is fitted on this version (no -S code), so no CMSE or DMSE switch can be mounted. For planning: treat roughly 60 N (about 6 kg lifted vertically with a 2:1 margin) as the usable push force at 0.5 MPa rather than the full rating.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X70-50B |
| Bore size | Ø16 mm |
| Stroke | 70 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ16X70-50B (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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 75 N |
| 0.7 MPa | 141 N | 106 N |
| Max (@1.0 MPa) | 21 kgf | |
The ACEJ16X70-50B 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 ACPJ16X70-50B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | 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 ACPJ16X70-50B Is Used
Multi-variant jig clamping
A 50 mm trim window lets one fixture clamp housings from 20 to 70 mm thick without re-fixturing, using the 100.5 N push at 0.5 MPa for light plastic or aluminium parts.
Compact ejection on assembly machines
The short body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, fits between station plates where a full-length body cannot, ejecting small stamped parts with the male-threaded 8 mm rod.
Adjustable carton stop on a packaging line
Set the extend stroke between 20 and 70 mm to stop different carton heights at an infeed gate; the fixed TPU bumper quiets the end of travel at 30-500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50B with the ACEJ16X70-50B
Size both ways: if 100.5 N push at 0.5 MPa is marginal for your tooling mass, step up to bore 20 (157.1 N push at 0.5 MPa); if the load is light and space is tighter, bore 12 gives 56.5 N at 0.5 MPa. The 50 mm window suits stations where one cylinder serves several product sizes between 20 and 70 mm of stroke. The adjuster is a mechanical end stop for the extend stroke only - it does not lock the piston if air is lost, so add external stops for load holding. FA/FB flange and LB foot mountings bolt to the ISO 21287 face. Since this model is discontinued, order the ACEJ16X70 as the current replacement and verify mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X70-50B
- ✓ 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 ACPJ16X70-50B FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa push rises to 140.7 N and pull to 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. The -50 code gives a 50 mm adjustment window, so the extend stroke is trimmed anywhere from 20 to 70 mm with the external stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
Only if the optional -S magnet was ordered - this version (no S code) has no magnet, so CMSE or DMSE reed or solid-state switches cannot be fitted. The ACPJ family is discontinued; the current-production replacement is the ACEJ16X70, a drop-in in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN-standard footprint.
Related AirTAC ACE Cylinders
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