
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X80-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 80mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X80-50SB 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 stroke anywhere from 30 mm up to the full 80 mm directly on the machine, while the retract stroke remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This 80 mm bore model features a 25 mm piston rod, PT3/8 porting, and a male M22x1.5 rod-end thread (-B) that couples directly to your load. The integrated magnet (-S) works with reed or electronic solid-state switches, and fixed elastomer bumpers handle end-of-stroke deceleration.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X80-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 80 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. |
| ×80 | 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 extend position on a CNC fixture without machining new spacers, allowing rapid adaptation for raw blanks of varying thicknesses.
Adjust the pressing height of a sealing jaw on the fly during product changeover, accommodating different box sizes without swapping pneumatic hardware.
Set trial end positions for a light assembly press, safely testing the 30-80 mm stroke window before locking the M20x1.5 adjuster nut for production runs.
Providing 2513.2 N push and 2267.8 N pull force at 0.5 MPa (3518.5 N push at 0.7 MPa), this 80 mm bore sits between the 63 mm (1558.6 N push) and 100 mm (3927.0 N push) sizes. If the end position never varies, a fixed-stroke ACQ suffices; otherwise, this ACQJ is ideal. Confirm your ordering essentials: 80 mm bore, 80 mm full stroke, 50 mm adjuster window, -S magnet, and -B male M22x1.5 rod thread.
Quick checklist
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 full stroke is 80 mm with a 50 mm window, giving a usable extend range of 30-80 mm. The adjuster thread is M20x1.5, the rod end is male M22x1.5, and the port is PT3/8.
No, the external threaded stop only limits how far the rod extends, leaving the piston area and force unchanged. The cylinder uses fixed NBR elastomer bumpers at each end for deceleration rather than adjustable air cushions, so for high-speed or high-energy loads you should add an external shock absorber.
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