This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X20-20SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X20-20SB 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 ACPJ20X20-20SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20SB is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm 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 ACEJ20X20-20SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X20-20SB
- 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 ACPJ20X20-20SB
This is a double acting, adjustable-stroke compact cylinder in the discontinued AirTAC ACPJ series. The 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa, rising to 219.9 N at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: an external stop screw trims the extend stroke anywhere from 0 to 20 mm on site, so one cylinder covers several station positions. The S code means the optional magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clamped straight onto the body, and the B code gives a male 10 mm rod thread.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight fixtures, slides and guarding where a full-length body cannot. A hard-anodized aluminium body carries an S45C hard-chrome rod, with a fixed TPU bumper at each end, running at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s. Note this model is discontinued: the current-production replacement is the ACEJ20X20, so confirm ISO 21287 mounting dimensions before swapping. As a sizing rule, plan on about 94 N of real work at 0.5 MPa, which lifts roughly 8 kg vertically with a 2:1 margin.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X20-20SB |
| Bore size | Ø20 mm |
| Stroke | 20 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 ACEJ20X20-20SB (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 (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 ACEJ20X20-20SB 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 ACPJ20X20-20SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | 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 ACPJ20X20-20SB Is Used
Small-parts clamping fixture
The 157.1 N push at 0.5 MPa clamps aluminium brackets or PCB carriers in a CNC secondary-operation jig, with the 0-20 mm trim absorbing fixture tolerance.
Indexed eject on an assembly dial
With the -S magnet fitted, CMSE switches confirm part ejection at each station of a rotary assembly table, while the short body fits under the dial plate.
Carton flap tuck station
A packaging machine tucks carton flaps with about 8 kg vertical equivalent force, and the compact head clears the sealing head guard.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X20-20SB with the ACEJ20X20-20SB
At 20 mm bore this sits in the mid range of the compact family: the 16 mm bore gives 100.5 N push at 0.5 MPa for lighter clamps, while the 25 mm class steps up for heavier tooling. The stop screw is a mechanical end stop for the extend stroke only - it does not lock the piston mid-stroke, so on air loss the rod can still drift and a separate holding method is needed for suspended loads. FA/FB flanges, LB feet and I/Y rod knuckles bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches for end-of-stroke sensing. Order the ACEJ20X20 as the current drop-in replacement and verify the ISO 21287 footprint first.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X20-20SB
- ✓ 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 ACPJ20X20-20SB 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. The -20 code sets a 20 mm adjustment window: a stop screw shortens the 20 mm extend stroke anywhere down to 0 mm, so the usable range is 0-20 mm. It runs on 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s.
No - the ACPJ series is discontinued. The current-production replacement is the ACEJ20X20, which matches the same 20 mm bore, 20 mm stroke and force class in the ISO 21287 family. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions and port position before swapping. This unit already carries the optional -S magnet, so CMSE / DMSE switches work as on the new model.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X20-20SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X20-20SB replacement — usually within 7-8 hours.