This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X75-20S, 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 ACPJ12X75-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X75-20S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 75mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X75-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke75 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X75-20S
- 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 ACPJ12X75-20S
The ACPJ12X75-20S is a double acting, adjustable-stroke compact cylinder with a 12 mm bore and a 75 mm stroke. A stop screw trims the extend stroke by up to 20 mm on site, giving a usable range of 55-75 mm without changing the cylinder. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those figures rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The 75 mm stroke exceeds the 50 mm maximum standard stroke for a 12 mm bore, so this unit is made to order.
The hard-anodized aluminium body and S45C hard-chrome rod keep the short ISO 21287-class build rigid while saving roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. Because the -S code is ordered, the magnet is fitted and CMSE or DMSE reed and solid-state switches can be clamped straight onto the body for end-of-stroke sensing. Plan on about 34 N of real work at 0.5 MPa (roughly 0.6 of the push rating), which is a vertical lift of about 2 kg with a 2:1 margin. Note: this model is discontinued; the current-production replacement is the ACEJ12X75, and buyers should confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X75-20S |
| Bore size | Ø12 mm |
| Stroke | 75 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 ACEJ12X75-20S (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 ACPJ12X75-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×75 | 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 (double rod, adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20S Is Used
Position-verified ejection on SMT pick-and-place heads
The fitted -S magnet lets CMSE or DMSE switches confirm the 55-75 mm trimmed extend stroke before the head releases a component, at speeds up to 500 mm/s.
Clamping small PCB test fixtures
About 34 N of usable clamp force at 0.5 MPa and a 20 mm trim window let the stop screw be set exactly for thin boards without repositioning the cylinder.
Sample pusher in compact lab analysers
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and the female M3x0.5 rod thread accepts small custom pusher tips.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20S with the ACEJ12X75-20S
Size both ways before ordering: the 16 mm bore pushes 100.5 N at 0.5 MPa if 56.5 N is marginal, while staying at 12 mm keeps the footprint smallest. The 20 mm adjustment window means your fixture stop must sit anywhere between 55 mm and 75 mm of extend stroke; the screw shortens the stroke only, it never lengthens it past 75 mm. The adjuster is a mechanical end stop, not a mid-stroke lock, so on air loss the piston still drifts and the stop must never be treated as a load-holding brake. Mounting is FA/FB flange or LB foot with I/Y rod knuckles on the ISO 21287 face. The rod end is female M3x0.5 and the port is M5x0.8. This model is discontinued; order the ACEJ12X75 as the drop-in successor and confirm the ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X75-20S
- ✓ 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 ACPJ12X75-20S 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 -20 code gives a 20 mm adjustment window, so the stop screw trims the 75 mm extend stroke anywhere down to 55 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the port is M5x0.8. The 75 mm stroke is a non-standard, made-to-order length for this bore.
An external stop screw shortens the extend stroke within the ordered 20 mm window; it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. Because this model carries the -S code, the magnet is fitted and CMSE or DMSE reed or solid-state switches mount directly on the body. A fixed TPU bumper sits at both ends. The model is discontinued; the ACEJ12X75 is the current drop-in replacement, so confirm the ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X75-20S
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