Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20SB 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 ACQJ32X70-20SB
The AirTAC ACQJ32X70-20SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the extend stroke on the machine across a 50 to 70 mm usable range (the 70 mm full stroke shortened by up to a 20 mm window) without swapping parts. The retract stroke remains completely unaffected. Driven through a PT1/8 port, this unit pushes with 402.1 N and pulls with 301.6 N at 0.5 MPa.
Because the adjuster alters travel length rather than piston area, output force stays identical to a standard ACQ of the same 32 mm bore, yielding 562.9 N of push at 0.7 MPa and a maximum 82 kgf at 1.0 MPa. This SB configuration includes a male M14x1.5 rod-end thread for direct load coupling and a built-in piston magnet compatible with reed or solid-state electronic switches. Deceleration relies on a fixed NBR elastomer bumper at each end rather than an adjustable air cushion.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20SB |
|---|---|
| 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 ACQJ32X70-20SB
| 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 ACQJ32X70-20SB Is Used
Machining Fixture Stops
Dial in the exact extend position of a 32 mm clamping cylinder during CNC product changeovers without machining new spacer blocks.
Assembly Press Depth
Set precise press-fit depths on an automated assembly line by turning the external stop to vary the extend travel between 50 and 70 mm.
Carton Sealing Alignment
Adjust the end stop on a packaging conveyor flap-folder to accommodate different carton heights rapidly on the fly.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ32X70-20SB the Right Cylinder?
If your application only requires a fixed 70 mm extend, the standard ACQ32X70 avoids the external adjuster hardware. For lower force needs, the 25 mm bore delivers 245.4 N push at 0.5 MPa, while the larger 40 mm bore provides 628.3 N push at 0.5 MPa for heavier loads. When ordering this adjustable variant, confirm the 32 mm bore, 70 mm full stroke, 20 mm window, S magnet, and B male rod thread to ensure proper integration.
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 ACQJ32X70-20SB FAQ
The usable extend range is 50 to 70 mm (70 mm full stroke minus the 20 mm window). Force is identical to a standard ACQ 32 mm bore: 402.1 N push and 301.6 N pull at 0.5 MPa, 562.9 N push at 0.7 MPa, and a maximum push of 82 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the extend travel without changing the piston area, so force remains unchanged. The cylinder uses fixed NBR elastomer bumpers for end-of-stroke deceleration, not an adjustable air cushion. Note that a plain ACQ-type does not hold its load on air loss; use an external rod lock or pilot-operated check valve for fail-safe holding.
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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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