This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X100-50B, 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 ACPJ12X100-50B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X100-50B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 100mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X100-50B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke100 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X100-50B
- 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 ACPJ12X100-50B
This ACPJ12X100-50B is a double acting compact cylinder with an adjustable extend stroke, built to the DIN-standard short-body format. Air drives the rod out and pulls it back, and a stop screw trims the 100 mm stroke anywhere inside the 50 mm adjustment window, giving a usable range of 50-100 mm. At 0.5 MPa the 12 mm bore pushes 56.5 N and pulls 42.4 N; at 0.7 MPa that rises to 79.2 N push and 59.4 N pull. The 100 mm stroke exceeds the 50 mm standard maximum for this bore, so it is a made-to-order build.
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 slim fixtures and guarded assemblies. Practical sizing: about 34 N (roughly 3.4 kgf) is a realistic working force at 0.5 MPa, so it lifts about 3 kg vertically with a 2:1 margin - enough for small covers, chutes or sensor flags. The rod ends in a male thread (the B code), the port is M5x0.8, and a fixed TPU bumper sits at each end. Note this model is discontinued; the current-production replacement is the ACEJ12X100, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-50B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-50B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X100-50B |
| Bore size | Ø12 mm |
| Stroke | 100 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 ACEJ12X100-50B (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 ACPJ12X100-50B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×100 | 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 (double rod, adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-50B Is Used
Small-part ejection on assembly fixtures
The 56.5 N push at 0.5 MPa is enough to nudge machined bushings or stamped clips off a nest, and the 50-100 mm adjustable range lets the operator tune the eject travel without re-plumbing.
Guarded slide actuation in compact cells
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits inside tight guarding where a full-length body cannot, driving lightweight shields or deflectors.
Sample handling in lab automation
With about 3 kg of vertical lift capacity at a 2:1 margin, the 12 mm bore raises small trays or vial racks, and the male rod thread (B code) accepts I/Y knuckles for linkages.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-50B with the ACEJ12X100-50B
Size both ways before committing: the 16 mm bore delivers 100.5 N push at 0.5 MPa if 56.5 N feels marginal, while staying at 12 mm keeps the envelope smallest. The 50 mm window suits applications where the extend stroke is tuned on site, but the stop is a mechanical end stop only - on air loss the piston still drifts, so it is not a load-holding device. No magnet is fitted on this version (no -S code), so CMSE or DMSE switches cannot be used; order an -S variant if sensing is needed. For new designs, specify the ACEJ12X100 instead - same bore, stroke and force class, currently in production.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X100-50B
- ✓ 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 ACPJ12X100-50B 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, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -50 code is a 50 mm adjustment window: a stop screw shortens the 100 mm extend stroke on site, so the usable extend range is 50-100 mm. It cannot lengthen the stroke past 100 mm, and the stop is not a mid-stroke lock - the piston still drifts if air is lost.
It is a short-body compact cylinder with a hard-anodized aluminium body, S45C hard-chrome 6 mm rod, M5x0.8 ports, a fixed TPU bumper at both ends and a male rod thread from the B code. Speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). The magnet is the optional -S code - this version has none, so CMSE / DMSE switches cannot be fitted. The model is discontinued; the current-production drop-in is the ACEJ12X100, and buyers should confirm ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
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