Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 175mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke175 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S
The AirTAC ACQJ40X175-75S is a double-acting, single-rod JIS compact cylinder built for applications requiring adjustable extend positioning. Because this is a long-stroke made-to-order variant, it exceeds the 100mm standard maximum for this bore size while retaining the standard 628.3N push force at 0.5MPa. An external M12x1.25 threaded stop and lock nut limit the forward travel, allowing you to fine-tune the usable extend range from 100mm up to the full 175mm directly on the machine without swapping parts.
The retract stroke remains completely unaffected by the forward stop mechanism. Since the piston area is unchanged, the output force is identical to a standard ACQ of the same 40mm bore, delivering 527.8N pull at 0.5MPa and 879.6N push at 0.7MPa. The cylinder body uses fixed NBR elastomer bumpers at each end for end-of-stroke deceleration rather than adjustable air cushions, and the built-in magnet (-S) supports both reed and solid-state electronic switches via its integrated grooves.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 175 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| 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 | M8×1.25 (F) / M14×1.5 (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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S Is Used
Fixture Setup Variation
Ideal for machining stations where clamping fixtures of different heights require rapid extend-position tuning without disassembling the pneumatic line.
Product Changeover Stops
Deploy on packaging conveyors to alter diverting stroke lengths on the fly when switching between varying box dimensions.
Assembly Press Trials
Useful on light assembly presses to dial in the exact pressing depth during prototype runs before locking down the final position.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S the Right Cylinder?
When sizing this model, consider the adjacent bores: the ACQJ32 provides 402.1N push at 0.5MPa, while the ACQJ50 yields 981.8N, making the 40mm bore a solid middle ground at 628.3N. If your extend end-position never varies, a fixed-stroke standard ACQ cylinder is sufficient. For setups requiring on-the-fly stroke adjustments, confirm your ordering essentials: 40mm bore, 175mm full stroke, 75mm adjustable window, the -S magnet, and the default female M8x1.25 rod-end 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 ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X175-75S FAQ
This cylinder has a 175mm full stroke with a 75mm adjustable window, giving a usable extend range of 100-175mm. The force is identical to a standard ACQ40: 628.3N push and 527.8N pull at 0.5MPa, 879.6N push at 0.7MPa, and a maximum push of 128kgf at 1.0MPa.
The external M12x1.25 threaded stop with lock nut only limits the extend stroke length; it does not change the piston area, so force remains constant. The retract stroke is unaffected. Deceleration relies on fixed NBR elastomer bumpers, so for high-energy loads, an external shock absorber is recommended.
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Related AirTAC ACQJ Compact Cylinders
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