This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ16X20-20SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ16X20-20SB 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 ACPJ16X20-20SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X20-20SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X20-20SB
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB
The ACPJ16X20-20SB is a double acting, adjustable-stroke compact cylinder with a 16 mm bore and 20 mm stroke, and it is now discontinued - the current-production replacement is the ACEJ16X20. Air drives the piston both ways, while a stop screw trims the extend stroke anywhere within the ordered 20 mm window, giving a usable range of 0-20 mm on site. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those figures rise to 140.7 N and 105.6 N, with a theoretical ceiling of 20.5 kgf at 1.0 MPa.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. Because the -S magnet is fitted on this model, CMSE or DMSE reed and solid-state switches can be clamped straight onto the hard-anodized aluminium body. As a planning rule, keep real work to about 60 N (roughly 6 kg vertical lift with margin) rather than the full 100.5 N rating. A fixed TPU bumper sits at both ends, the S45C rod is hard-chrome plated, and the male rod thread (B code) suits knuckle accessories. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ16X20.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X20-20SB |
| Bore size | Ø16 mm |
| Stroke | 20 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 ACEJ16X20-20SB (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 ACEJ16X20-20SB 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 ACPJ16X20-20SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -20 | 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 ACPJ16X20-20SB Is Used
Fixture clamping on small CNC jigs
The 0-20 mm adjustable window lets a machinist dial in exact clamp travel on 16 mm-bore fixtures, with 100.5 N of push at 0.5 MPa holding light aluminium parts.
Position-verified ejector on packaging lines
With the fitted -S magnet, a CMSE switch confirms full extend before the carton pusher retracts, at cycle speeds up to 500 mm/s.
Compact press head for electronics assembly
The short body fits inside a benchtop press frame where an ISO 15552 profile cylinder would overhang, delivering 140.7 N at 0.7 MPa for connector seating.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB with the ACEJ16X20-20SB
Size the bore by load: the 12 mm bore gives 56.5 N push at 0.5 MPa, while stepping up to 20 mm raises it to 157.1 N - pick 16 mm when your part weight sits between those bands. This unit carries the optional -S magnet and a male rod thread, so pair it with CMSE / DMSE switches and I or Y knuckles if position feedback and pivoting tooling are needed. Note the stop screw only shortens the extend stroke and drifts on air loss - it is not a mid-stroke lock. For new designs, order the ACEJ16X20 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X20-20SB
- ✓ 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 ACPJ16X20-20SB FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa it pushes 140.7 N and pulls 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, and the port is M5x0.8 with an 8 mm rod.
A stop screw shortens the extend stroke by up to 20 mm within the ordered -20 window, so usable travel is 0-20 mm; it is a mechanical end stop, not a load-holding lock, so the rod still drifts if air is lost. The ACPJ family is discontinued - order the ACEJ16X20, the current ISO 21287 drop-in in the same bore, stroke and force class, and confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X20-20SB
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