
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-50B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 75mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X75-50B is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. You get a usable extend range of 25-75 mm, set by taking the 75 mm full stroke and shortening it by up to the 50 mm window. The retract movement remains completely unaffected. An M20x1.5 adjuster screw handles the end-position tuning.
Output force matches a standard ACQ of the same bore, giving 2513.2 N push and 2267.8 N pull at 0.5 MPa. This unit ships with a male M22x1.5 rod end for direct load coupling and lacks a piston magnet. It uses a fixed NBR elastomer bumper at each end for deceleration and operates at speeds from 30 to 500 mm/s.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X75-50B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 75 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. |
| ×75 | 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 extend position for varying raw part sizes on a CNC lathe loader without machining new spacer blocks.
Quickly adjust the folding stroke length during packaging line format changes to accommodate different box dimensions.
Set precise lower dead point for a light assembly press during initial tooling trials to prevent part deformation.
This 80 mm bore delivers 2513.2 N push at 0.5 MPa. Dropping to a 63 mm bore drops force to 1558.6 N, while a 100 mm bore raises it to 3927.0 N. Choose this specific adjustable model when you need on-the-fly extend end-position changes during setup or product changeover; if the 75 mm distance never varies, a fixed-stroke ACQ suffices. Verify your ordering essentials: 80 mm bore, 75 mm full stroke, 50 mm window, male rod thread (-B), and no magnet.
Quick checklist
The usable extend range is 25-75 mm (75 mm full stroke minus a 50 mm window). It provides 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 port size is PT3/8.
An external M20x1.5 threaded stop with a lock nut limits only the extend stroke, leaving retract unaffected. Because the piston area is unchanged, force is identical to a standard ACQ. Fixed NBR elastomer bumpers decelerate the load at stroke ends; for high energy, slow the approach or add an external shock absorber.
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