Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-50B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-50B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø32mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ32 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-50B
The AirTAC ACQJ32X70-50B is a double-acting JIS compact cylinder featuring a 32mm bore and a 70mm full stroke. Equipped with an external M12x1.25 threaded stop and lock nut, it restricts the forward extension travel. You can shift the effective extend span anywhere from 20mm up to the complete 70mm right at the machine, while the retract distance remains untouched.
This unit includes a male M14x1.5 piston rod end for direct load coupling and uses a PT1/8 port. Because the piston area stays constant, output thrust equals a standard ACQ variant of this exact size, yielding 402.1N push and 301.6N pull at 0.5 MPa. It relies on a fixed NBR elastomer bumper for end-of-stroke deceleration and retains sensor grooves, though this specific SKU ships without a magnet.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-50B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-50B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø32 mm |
| Full stroke | 70 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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 ACQJ32X70-50B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 ACQJ32X70-50B Is Used
Machining Fixture Limits
Dial in the exact clamping reach on a CNC milling fixture during part changeovers, tweaking the 20-70mm forward span without machining new spacers.
Carton Sealing Stops
Modify the flap-folding arm extension on a packaging line to accommodate various box heights, using the external stop to prevent over-travel.
Press Tonnage Setup
Establish a precise touch-point for a light-duty bending or forming press, testing different end positions safely before locking the nut down.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-50B the Right Cylinder?
Choosing this 32mm bore provides 402.1N push force at 0.5 MPa, sitting between the smaller 25mm (245.4N push) and larger 40mm (628.3N push) options. If your setup never requires altering the forward endpoint, a fixed-stroke ACQ32 version is simpler and sufficient. When ordering, verify the 70mm total travel, the 50mm adjustment window, the male M14x1.5 rod thread, and the absence of a magnet. Note that a plain cylinder drifts if air pressure is lost; utilize an external rod lock for fail-safe load holding.
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 ACQJ32X70-50B FAQ
It has a 32mm bore, a 70mm full stroke, and a 50mm adjustment window, giving a usable extend range of 20-70mm. The thrust is identical to a standard ACQ32: 402.1N push and 301.6N pull at 0.5 MPa, 562.9N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa. The retract stroke is unaffected.
An external M12x1.25 threaded stop with a lock nut mechanically limits how far the rod extends, allowing on-machine tuning without replacing parts. This adjustment alters travel length only, leaving the piston area and force output unchanged. The cylinder uses fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions, so external shock absorbers are recommended for high-energy loads.
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1-Year Warranty
Covers non-human-caused product damage.
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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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