
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X50-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 50mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The ACQJ160X50-30SB is a double-acting, single-rod JIS compact cylinder from AirTAC's big-bore range, featuring an external threaded stop with a lock nut that limits the EXTEND end position. With a full stroke of 50mm and a 30mm adjustment window, the usable extend range spans 20-50mm, while the RETRACT stroke remains unaffected. The external adjuster utilizes an M36x2.0 thread.
Because the piston area is unchanged, the force output is IDENTICAL to a standard ACQ of this bore, delivering 10053.1N push and 9424.8N pull at 0.5MPa. This variant includes a male-thread piston rod end (M36x1.5) for direct load coupling, a built-in piston magnet (-S) compatible with reed or electronic solid-state switches, and fixed NBR elastomer bumpers at each end for end-of-stroke deceleration.
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X50-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 50 mm |
| Adjuster thread | M36×2.0 |
| 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 | M24×3.0 (F) / M36×1.5 (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 | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 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. |
|---|---|
| 160 | 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 20-50mm extend position on heavy-duty metal stamping presses without machining new spacers.
Adapt stop positions rapidly during automotive product changeovers to accommodate different large component heights.
Set trial end positions on large injection molding machinery safely before finalizing mechanical hard stops.
For a 160mm bore, this cylinder delivers 10053.1N push force at 0.5MPa. Stepping down to a 140mm bore yields 7696.9N push, while no larger standard bore exists in this series. If exact 50mm extension is always required without variation, a fixed-stroke ACQ cylinder suffices. When ordering, confirm the 160mm bore, 50mm full stroke, 30mm window, -S magnet, and -B male rod thread.
Quick checklist
The force is IDENTICAL to a standard ACQ of this bore: 10053.1N push and 9424.8N pull at 0.5MPa, 14074.3N push at 0.7MPa, and a maximum push of 2050kgf at 1.0MPa. Operating pressure is 0.15-1.0MPa. The usable extend range is 20-50mm (50mm full stroke minus the 30mm window), while the retract stroke is unaffected.
The external M36x2.0 threaded stop with lock nut limits the extend stroke length only, meaning force remains unchanged. Deceleration relies on fixed NBR elastomer bumpers, not adjustable air cushions. A plain ACQ-type cylinder does NOT hold its load on air loss; for a fail-safe hold, install an external rod lock or pilot-operated check valve.
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