This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X25-30B, 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 ACPJ16X25-30B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X25-30B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X25-30B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X25-30B
- 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 ACPJ16X25-30B
The ACPJ16X25-30B is a discontinued double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 25 mm stroke anywhere within a 30 mm window on site, so one cylinder covers a range of jig positions. Air drives the rod out and back, and the 16 mm bore delivers 100.5 N push and 75.4 N pull at 0.5 MPa (140.7 N push at 0.7 MPa). In practice, plan on roughly 60 N of usable work at 0.5 MPa, which lifts about 6 kg vertically - and about 3 kg with a 2:1 margin for a real part like a small aluminum bracket.
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, guarding and pick stations. The hard-anodized aluminum body carries an S45C hard-chrome rod with a male (B) thread, fixed TPU bumpers sit at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). Note: this unit is discontinued - the current-production drop-in is the ACEJ16X25, so confirm ISO 21287 mounting dimensions before swapping from the DIN-standard ACP footprint.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-30B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-30B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X25-30B |
| Bore size | Ø16 mm |
| Stroke | 25 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 ACEJ16X25-30B (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 ACPJ16X25-30B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -30 | 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 ACPJ16X25-30B Is Used
Small-part ejection from machining fixtures
The 100.5 N push at 0.5 MPa is enough to tip a finished 10-15 mm aluminum or brass part off a CNC jig, and the 30 mm adjust window lets the operator shorten the extend stroke so the ejector never fouls the fixture wall.
Compact gating on packaging lines
With about 50% of the mounting length of an ISO 15552 profile cylinder, this 16 mm bore slides into the narrow gap between a conveyor guide rail and the machine frame to divert blister packs; add the -S magnet code if CMSE / DMSE end-position sensing is needed later.
Clamping of small electronics enclosures
Roughly 60 N of usable clamping force at 0.5 MPa holds a plastic control box against a locating pin during screw driving, and the male B rod thread accepts a knuckle for angled clamp arms.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X25-30B with the ACEJ16X25-30B
Size against the 0.5 MPa figures: bore 12 gives 56.5 N push and bore 20 gives 157.1 N push, so the 16 mm at 100.5 N sits between them - step up to 20 mm if your load needs more than about 60 N of real work, or down to 12 mm to save space. The 30 mm adjust window lets you dial the extend stroke from 0 to 25 mm, but the stop is a mechanical end stop only: on air loss the piston drifts, so it is not a load-holding lock. This version has no magnet (the optional -S code adds one for CMSE / DMSE switches), and the male B rod thread suits knuckle-style tooling. For new designs, order the ACEJ16X25 instead - this ACPJ is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X25-30B
- ✓ 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 ACPJ16X25-30B FAQ
At 0.5 MPa the 16 mm bore gives 100.5 N push and 75.4 N pull; at 0.7 MPa it gives 140.7 N push and 105.6 N pull; theoretical maximum is 20.5 kgf at 1.0 MPa. The extend stroke is 25 mm, trimmable by up to 30 mm via the stop screw, with speed 30-500 mm/s, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and an M5x0.8 port. The model is discontinued; the ACEJ16X25 is the current replacement.
An external stop screw shortens the extend stroke on site anywhere within the 30 mm window - it trims the stroke, it never extends it past 25 mm, and it is not a mid-stroke lock. For sensing, the optional -S magnet code enables CMSE / DMSE reed or solid-state switches; this B-version without S has no magnet, so no switch can be mounted. Fixed TPU bumpers at both ends absorb end-of-travel shock.
Related AirTAC ACE Cylinders
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