This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ16X125-50SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ16X125-50SB 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 ACPJ16X125-50SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ16X125-50SB is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 125mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X125-50SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X125-50SB
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X125-50SB
The ACPJ16X125-50SB is a double acting compact cylinder with an adjustable extend stroke: the -50 stop screw trims the 125 mm stroke down to as short as 75 mm on site. This 16 mm bore unit is discontinued; the current-production drop-in is the ACEJ16X125 in the same bore, stroke and force class. The 125 mm stroke exceeds the 75 mm maximum standard stroke for bore 16, so it is a made-to-order build.
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those rise to 140.7 N and 105.6 N, with a theoretical 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, and the male rod thread (B code) plus the fitted -S magnet for CMSE / DMSE switches make it easy to drop into sensor-equipped fixtures. Plan on about 60 N of real work at 0.5 MPa, which lifts roughly 5 kg vertically with a 2:1 margin. Fixed TPU bumpers sit at both ends, speed runs 30-500 mm/s, and pressure spans 0.15-1.0 MPa (22-145 psi).
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X125-50SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X125-50SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X125-50SB |
| Bore size | Ø16 mm |
| Stroke | 125 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 ACEJ16X125-50SB (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 ACEJ16X125-50SB 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 ACPJ16X125-50SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×125 | 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 ACPJ16X125-50SB Is Used
Fixture clamping on CNC pallets
The 100.5 N push at 0.5 MPa clamps small aluminium or plastic workpieces, and the 75-125 mm adjustable window lets one cylinder serve pallets of different heights.
Position-verified ejector on assembly lines
The fitted -S magnet accepts CMSE / DMSE switches, so a PLC can confirm full extension before the next station cycles.
Compact press for connector insertion
About 60 N of usable force at 0.5 MPa presses pins and terminals in electronics assemblies where a full-length cylinder will not fit.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X125-50SB with the ACEJ16X125-50SB
Size between bores: a 12 mm bore gives 56.5 N push at 0.5 MPa, while a 20 mm bore reaches 157.1 N - pick the 16 mm when your load sits between those. The adjuster is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the piston can drift if air is lost; do not use it to hold a load. Mounting options include FA/FB flange and LB foot on the ISO 21287 face, and the male rod thread suits I/Y knuckles directly. Before ordering, confirm the ISO 21287 mounting dimensions and switch to the ACEJ16X125, the current replacement for this discontinued model.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X125-50SB
- ✓ 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 ACPJ16X125-50SB FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa, 140.7 N push and 105.6 N pull; theoretical maximum is 20.5 kgf at 1.0 MPa. The -50 code sets a 50 mm adjustment window: an external stop screw shortens the 125 mm extend stroke to any length down to 75 mm. It is a stop, not a load-holding brake - on air loss the piston can still drift.
It is discontinued; the current-production replacement is the ACEJ16X125 (same bore, stroke and force class) - confirm ISO 21287 mounting dimensions before swapping. The body is hard-anodized aluminium with an S45C hard-chrome rod, fixed TPU bumpers at both ends, M5x0.8 ports, a male rod thread, and the -S magnet fitted for CMSE / DMSE switches. Speed is 30-500 mm/s; the 125 mm stroke is a made-to-order length.
Related AirTAC ACE Cylinders
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