This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X125-100 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X125-100 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 ACPJ20X125-100
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100 is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm 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 ACEJ20X125-100 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X125-100
- 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 ACPJ Adjustable Compact Cylinder ACPJ20X125-100
The ACPJ20X125-100 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 125 mm stroke by up to 100 mm, giving a usable range of 25-125 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, and the theoretical maximum is 32 kgf at 1.0 MPa. The 125 mm stroke exceeds the 100 mm standard maximum for bore 20, so this unit is made to order. Note: the ACPJ family is discontinued; the current-production drop-in is the ACEJ20X125.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight gantries and guarding where a full-length body will not fit. A rule of thumb: plan for about 94 N of real work at 0.5 MPa, which lifts roughly 4 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X125-100 |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ20X125-100 (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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 kgf | |
The ACEJ20X125-100 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 ACPJ20X125-100
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -100 | 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 ACPJ20X125-100 Is Used
Fixture clamping on CNC pallets
The 157.1 N push at 0.5 MPa clamps aluminium workpieces on machining pallets, with the stop screw set so the rod tip lands exactly on the clamp point.
Product divert on packaging lines
At 30-500 mm/s the rod kicks cartons off a conveyor lane; trimming the stroke to 25 mm keeps the divert arm clear of passing packs.
Sample press in lab automation
About 4 kg of vertical lift capacity with a 2:1 margin suits pressing sample vials into sealing trays inside compact instrument enclosures.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100 with the ACEJ20X125-100
Size up from the 16 mm bore (100.5 N push at 0.5 MPa) if 157.1 N is more than the job needs; step to a 25 mm or larger bore if the load approaches the 94 N working figure. The end stop only limits the extend stroke - it is not a mid-stroke lock, so the rod still drifts if air is lost. This unit has no magnet fitted; order the -S code if CMSE / DMSE switches are planned. FA/FB flange and LB foot mountings suit the ISO 21287 face. Before swapping in the ACEJ20X125, confirm the ISO 21287 mounting dimensions against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X125-100
- ✓ 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 ACPJ20X125-100 FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N. The theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi).
The -100 code sets a 100 mm adjustment window: a stop screw shortens the 125 mm extend stroke on site, so the usable range is 25-125 mm. It cannot lengthen the stroke past 125 mm. The model is discontinued; the ACEJ20X125 is the current ISO 21287 replacement - confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X125-100
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X125-100 replacement — usually within 7-8 hours.