
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X50-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X50-50SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut to regulate the extend end position. You get a 50mm full stroke with a 50mm adjustment window, allowing the usable extend range to be fine-tuned from 0mm up to 50mm directly on your equipment. The retract movement remains completely unaffected. A -B male piston rod end (M22x1.5) couples directly to your load, and the -S magnet enables position sensing.
Because the internal piston area stays constant, output force is identical to a standard ACQ of this bore: 2513.2N push and 2267.8N pull at 0.5MPa. The cylinder body uses a fixed NBR elastomer bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Operating pressure spans 0.15 to 1.0 MPa, and the PT3/8 port handles standard pneumatic supply.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X50-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 50 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. |
| ×50 | 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 fixture during initial setup, shortening the extend stroke from 50mm down to 0mm without fabricating custom spacers.
Accommodate varying carton sizes on a packaging line by tweaking the rod extension stop on the fly, ensuring precise flap folding without changing cylinders.
Test multiple engagement depths on a light assembly press by adjusting the external M20x1.5 stopper nut, finding the optimal end position before final lock-down.
Choosing this 80mm bore provides a maximum push of 513 kgf at 1.0 MPa. If you need less force, dropping down to a 63mm bore yields 1558.6N push at 0.5 MPa, while stepping up to a 100mm bore gives 3927.0N push at 0.5 MPa for heavier loads. A fixed-stroke ACQ is sufficient if your end position never varies. When ordering, verify the 50mm full stroke, the 50mm adjustment window, the -S magnet, and the -B male rod thread to ensure proper fitment.
Quick checklist
It delivers 2513.2N push and 2267.8N pull at 0.5MPa, 3518.5N push at 0.7MPa, and a maximum push of 513kgf at 1.0MPa. The full stroke is 50mm with a 50mm window, giving a usable extend range of 0-50mm. The retract stroke stays fixed at 50mm.
The external M20x1.5 threaded stop with lock nut limits only the extend length, leaving force unchanged from a standard ACQ. Fixed NBR elastomer bumpers absorb end-impact energy. The built-in -S magnet works with both reed and electronic solid-state switches for position feedback.
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