This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X50-10SB, the same code under the new prefix. 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 ACPJ12X50-10SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X50-10SB is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X50-10SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X50-10SB
- 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 ACPJ12X50-10SB
This is a double acting compact cylinder with an adjustable extend stroke. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa), and the -10 code gives a 10 mm trim window: a stop screw shortens the 50 mm stroke on site, so the working range is 40-50 mm. The body is hard-anodized aluminium with an S45C hard-chrome rod, and the male rod thread (B code) suits knuckle and tooling plates. Note that this model is discontinued; the current-production drop-in is ACEJ12X50 in the same bore, stroke and force class.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures, guards and small gantries. Because the S code is ordered, the magnet is fitted and CMSE / DMSE reed or solid-state switches can be mounted directly on the body. A fixed TPU bumper sits at each end. As a sizing rule, plan for roughly 33.9 N of real work at 0.5 MPa, which lifts about 2.9 kg vertically with a 2:1 margin. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, air filtered to 40 um. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X50-10SB |
| Bore size | Ø12 mm |
| Stroke | 50 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ12X50-10SB (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 (Ø12mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
ACPJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -10 | 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 (double rod, adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10SB Is Used
Micro part ejection from nests
The 56.5 N push at 0.5 MPa clears small machined or moulded parts off a locating nest, and the 40-50 mm trimmed stroke matches shallow die pockets.
Position-checked clamp on an assembly bench
With the -S magnet fitted, a CMSE or DMSE switch confirms the clamp is fully extended, while the male rod thread takes a Y knuckle for a swinging clamp pad.
Sample pusher in a compact lab feeder
The short body, about 50% shorter than an ISO 15552 profile cylinder, fits inside a benchtop feeder housing, lifting about 2.9 kg vertically with margin.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-10SB with the ACEJ12X50-10SB
Size both ways: if 56.5 N push at 0.5 MPa is marginal, step up to the 16 mm bore for 100.5 N; if the load is lighter and space is tighter, the 12 mm is already the smallest bore in the family. The stop screw trims the extend stroke only within the 10 mm window and is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flange and LB foot mountings plus I/Y rod knuckles bolt to the standard face. For new designs, order the ACEJ12X50 instead and confirm the ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X50-10SB
- ✓ 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 ACPJ12X50-10SB FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N; the theoretical maximum is 11.5 kgf at 1.0 MPa. The -10 code sets a 10 mm adjustment window: a stop screw shortens the 50 mm extend stroke on site, giving a usable 40-50 mm range. It is a mechanical end stop only, so on air loss the piston still drifts.
No, the ACPJ family is discontinued. The current-production drop-in is ACEJ12X50, which swaps the P for an E and matches the same 12 mm bore, 50 mm stroke and force class. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. This unit carries the optional -S magnet, so CMSE / DMSE switches can be used, and the fixed TPU bumper decelerates at both ends.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X50-10SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X50-10SB replacement — usually within 7-8 hours.