
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X175-50S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø160mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ160X175-50S is a double-acting, single-rod big-bore JIS compact cylinder featuring an external threaded stop and lock nut that limits the EXTEND end position. With a full stroke of 175 mm and a 50 mm adjustment window, you can fine-tune the usable extend range from 125 mm up to 175 mm directly on the machine. The RETRACT stroke remains completely unaffected by this mechanism. A built-in piston magnet (-S) is included for position sensing.
Because the piston area is unchanged, the force output is identical to a standard ACQ of this bore, delivering 10053.1 N of push force at 0.5 MPa. The unit uses a fixed elastomer NBR bumper at each end for end-of-stroke deceleration rather than an adjustable air cushion. Operating pressure spans 0.15-1.0 MPa, and the standard PT3/8 port handles airflow for the 40 mm rod.
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ160X175-50S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø160 mm |
| Full stroke | 175 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. |
| ×175 | 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).
Dialing in the exact extend end position during a heavy press setup without machining custom spacers or swapping cylinder bodies.
Adjusting the extend stroke on a large assembly line fixture to accommodate varying product heights quickly during line changeovers.
Testing trial end positions on a new heavy-duty packaging machine to find the optimal clamping distance before finalizing the design.
When sizing this model, consider the adjacent bores in the big-bore compact range (up to 300 mm max standard stroke). Stepping down to bore 140 yields 7696.9 N push at 0.5 MPa, while this 160 mm bore provides 10053.1 N push at 0.5 MPa and a maximum push of 2050 kgf at 1.0 MPa. If your extend end position is fixed and never requires variation, a standard ACQ cylinder will suffice. To order, confirm the 160 mm bore, 175 mm full stroke, 50 mm window, the -S magnet for electronic or reed switches, and the female M24x3.0 rod-end thread.
Quick checklist
The usable extend range is 125-175 mm (full 175 mm stroke minus up to 50 mm). Force is identical to a standard ACQ: 10053.1 N push and 9424.8 N pull at 0.5 MPa, 14074.3 N push at 0.7 MPa, and a maximum push of 2050 kgf at 1.0 MPa.
An external M36x2.0 threaded stop with a lock nut limits the extend stroke length only, leaving the retract stroke and piston force unchanged. Fixed NBR bumpers handle deceleration at both ends. The -S magnet works with reed or solid-state electronic switches for position feedback.
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