This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X40-40B, 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 ACPJ16X40-40B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X40-40B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X40-40B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X40-40B
- 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 ACPJ16X40-40B
The ACPJ16X40-40B is a double acting adjustable-stroke compact cylinder, now discontinued, with a 16 mm bore and 40 mm stroke. Air drives the rod in both directions, and an external stop screw trims the extend stroke anywhere within the ordered 40 mm window, giving a usable range of 0-40 mm. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those figures rise to 140.7 N and 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into cramped fixtures a full-length body cannot reach.
Built around a hard-anodized aluminium body with an S45C hard-chrome rod, it carries fixed TPU bumpers at both ends and runs at 30-500 mm/s on air filtered to 40 um, 0.15-1.0 MPa (22-145 psi). This B-code version has a male rod thread and a PT port thread with an M5x0.8 port. For planning, treat about 60 N (0.6 of the push force) as the realistic working output at 0.5 MPa, which corresponds to lifting roughly 5 kg vertically with a 2:1 margin. Note that the stop screw is a mechanical end stop only: on air loss the piston still drifts, so it never holds a load. The current-production drop-in is the ACEJ16X40 (swap the P for an E); confirm ISO 21287 mounting dimensions before swapping, since the ACP series is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-40B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-40B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X40-40B |
| Bore size | Ø16 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ16X40-40B (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 (Ø16mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 75 N |
| 0.7 MPa | 106 N |
| Max (@1.0 MPa) | 15 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 ACPJ16X40-40B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -40 | 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 ACPJ16X40-40B Is Used
Small-parts press station
The 100.5 N push at 0.5 MPa seats connectors, labels or light inserts into plastic housings on an electronics assembly bench, with the 0-40 mm trim matching varying part heights.
Packaging line reject gate
A short 40 mm stroke with on-site adjustment swings or pushes off-spec cartons off a conveyor without lengthening the machine frame, thanks to the compact short body.
Lab clamping fixture
About 5 kg of vertical lift capacity (with a 2:1 margin) makes the 16 mm bore suitable for clamping small test specimens or lowering probes in bench-top rigs.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X40-40B with the ACEJ16X40-40B
Size this bore by force: at 0.5 MPa the 16 mm bore gives 100.5 N push, while the 12 mm bore delivers 56.5 N and the 20 mm bore 157.1 N. If your fixture needs more than about 60 N of real work at 0.5 MPa, step up to the 20 mm bore. The male rod thread (B code) suits knuckle or external tooling; FA/FB flange and LB foot mountings bolt to the standard face. The 40 mm stroke sits well inside the 75 mm maximum standard stroke for this bore. This model is discontinued - order the ACEJ16X40 as the current drop-in and verify ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X40-40B
- ✓ 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 ACPJ16X40-40B FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa, 140.7 N push and 105.6 N pull; theoretical maximum 20.5 kgf at 1.0 MPa. The -40 code sets a 40 mm adjustment window: an external stop screw shortens the 40 mm extend stroke on site, giving a usable 0-40 mm range. It is an end stop only - on air loss the piston drifts, so it never holds a load. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
No - the ACPJ family is discontinued. The current-production replacement is the ACEJ16X40 (P changed to E), a drop-in in the same bore, stroke and force class; confirm ISO 21287 mounting dimensions before swapping. On sensors: this unit has no magnet because the -S code was not ordered. The optional -S magnet enables CMSE / DMSE reed or solid-state switches; without it, no switch can be mounted.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X40-40B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X40-40B replacement — usually within 7-8 hours.