
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X45-50S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. You can fine-tune the usable extend range from 0 up to 45 mm directly on your machinery without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area is unchanged, output force matches a standard ACQ of the same bore, delivering 2513.2 N push at 0.5 MPa. This bore 80 unit features a 25 mm rod, PT3/8 porting, and fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration. The included -S magnet works with reed or electronic solid-state switches.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X45-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 45 mm |
| Adjuster thread | M20×1.5 |
| Port size | PT3/8 |
| 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 |
| Rod thread | M16×2.0 (F) / M22×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×45 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Dial in the exact clamping reach on a CNC machining center during initial setup, allowing operators to tweak the 0-45 mm extend position for different raw casting widths.
Adjust the extend stroke of a sorting gate on a packaging line without changing cylinder mounts, accommodating varying box lengths rapidly.
Test end positions on an assembly press by limiting the extend stroke to prevent tooling crashes, finding the optimal working depth before final lock-down.
If your application only requires a fixed 45 mm extend stroke, a standard ACQ series cylinder will suffice without the external adjuster hardware. For higher force requirements, stepping up to a bore 100 provides 3927.0 N push at 0.5 MPa, while dropping to a bore 63 yields 1558.6 N push. When ordering this adjustable model, confirm the 80 mm bore, 45 mm full stroke, 50 mm adjustment window, the -S magnet option, and the default female M16x2.0 rod-end thread.
Quick checklist
This double-acting cylinder has a usable extend range of 0-45 mm (45 mm full stroke minus the 50 mm window). It delivers 2513.2 N push and 2267.8 N pull at 0.5 MPa, 3518.5 N push at 0.7 MPa, and a maximum push of 513 kgf at 1.0 MPa. The bore is 80 mm with a PT3/8 port.
An external M20x1.5 threaded stop with a lock nut mechanically limits how far the rod extends, shortening the stroke length only. The output force is identical to a standard ACQ because the piston area is unchanged. Deceleration is handled by fixed NBR elastomer bumpers at both ends, not an adjustable air cushion.
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