Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 70mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke70 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-40
The AirTAC ACQJ40X70-40 is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend end position. With a full stroke of 70 mm and a 40 mm adjustment window, you can fine-tune the usable extend range from 30 mm up to 70 mm directly on your equipment. The retract stroke remains completely unaffected by this mechanism.
Because the piston area is unchanged, output force matches a standard ACQ exactly, delivering 628.3 N push and 527.8 N pull at 0.5 MPa. The body features a 16 mm rod, a PT1/8 port, and fixed elastomer bumpers at both ends for end-of-stroke deceleration. This unit ships without a magnet, though the body retains sensor grooves for adding switches externally if needed.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 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 (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 ACQJ40X70-40
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | 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 ACQJ40X70-40 Is Used
Machine Tending Setup
Dial in the exact extend distance from 30 to 70 mm during initial machine commissioning to accommodate varying part heights without machining new spacers.
Product Changeover Stops
Quickly reposition the external M12x1.25 adjuster lock nut on a packaging line when switching between different carton sizes or fixture depths.
Trial End Positions
Test clamping reach on an assembly press safely by starting at a shorter 30 mm extend stroke before moving out to the full 70 mm travel.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X70-40 the Right Cylinder?
If your application only requires a fixed 70 mm extend stroke, a standard ACQ40X70 cylinder is sufficient. Choose this ACQJ40X70-40 model when you need on-machine end-position tuning without swapping parts. For lower force needs, a 32 mm bore provides 402.1 N push at 0.5 MPa; for higher demands, a 50 mm bore yields 981.8 N. When ordering, confirm the 40 mm bore, 70 mm full stroke, 40 mm window, female M8x1.25 rod-end thread, and whether you require the S magnet option for position sensing.
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 ACQJ40X70-40 FAQ
The force is identical to a standard ACQ40, providing 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa. The usable extend range is 30 to 70 mm, created by the 40 mm adjustment window on the 70 mm full stroke.
The external threaded stop with a lock nut limits the extend distance without changing the piston area, so force remains unchanged. The retract stroke is unaffected. Deceleration relies on fixed elastomer bumpers, not adjustable air cushions. This unit lacks a magnet, but the body grooves allow mounting reed or solid-state switches if you add a magnet later.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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