Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø125mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ125 mm
- Full stroke175 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB
The ACQJ125X175-30SB is a big-bore JIS compact, double-acting single-rod cylinder featuring an external M27x2.0 threaded stop and lock nut. This mechanism limits the extend end position, providing a usable forward travel range of 145 to 175 mm. The return stroke remains completely unaffected. Because the piston area stays constant, output force equals that of a standard ACQ of this size.
Equipped with a male M30x1.5 piston rod end (-B) and a built-in magnet (-S), it couples directly to the load and supports both reed and solid-state sensors. Operating pressure spans 0.15-1.0 MPa, and the unit relies on a fixed NBR elastomer bumper at each end for deceleration rather than an adjustable air cushion.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø125 mm |
| Full stroke | 175 mm |
| Adjuster thread | M27×2.0 |
| 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 | M22×2.5 (F) / M30×1.5 (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.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 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.
Model Code: Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 125 | 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).
Where the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB Is Used
Heavy Press Tooling
Dial in the exact 145-175 mm clamping reach on large press setups without machining custom spacers during product changeover.
Automotive Assembly
Fine-tune the extend end position on the fly for varying chassis dimensions, relying on the 6135.9 N push force to seat heavy components.
Pallet Positioning
Adjust the external stop to set precise lifting heights for different pallet sizes while the fixed elastomer bumper manages end-of-travel impact.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB the Right Cylinder?
For 0.5 MPa push requirements, the smaller bore 100 yields 3927.0 N, whereas this 125 mm bore delivers 6135.9 N; stepping up to bore 140 provides 7696.9 N. Choose this specific model when your fixture needs 145-175 mm of forward travel and direct male rod mounting. If the exact 175 mm forward position never varies, a fixed-stroke ACQ suffices. Confirm ordering essentials: 125 mm bore, 175 mm full stroke, 30 mm window, -S magnet, and -B male rod thread.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ125X175-30SB FAQ
The usable extend range is 145-175 mm (a 30 mm window off the 175 mm full stroke). Force is identical to a standard ACQ: push is 6135.9 N and pull is 5733.8 N at 0.5 MPa, push is 8590.3 N at 0.7 MPa, and maximum push is 1251 kgf at 1.0 MPa.
An external M27x2.0 threaded stop with a lock nut mechanically limits forward travel, shortening the stroke without changing piston area, so force is unchanged. The cylinder uses a fixed elastomer bumper, not an adjustable cushion; for fail-safe load holding on air loss, add an external rod lock.
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Standard models usually ship in 3-4 days.
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Related AirTAC ACQJ Compact Cylinders
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