Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 250mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke250 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10
The AirTAC ACQJ40X250-10 is a double-acting JIS compact cylinder featuring a 250mm stroke and a 10mm external adjustment window. An external M12x1.25 threaded stop with a lock nut restricts the extend end position, yielding a usable extend range of 240-250mm. The retract stroke remains completely unaffected. This long-stroke variant exceeds the standard 100mm maximum for this bore, making it a made-to-order item.
Because the adjuster only limits travel distance and leaves piston area untouched, output force is identical to a standard ACQ. At 0.5 MPa, push force is 628.3 N and pull force is 527.8 N. The unit uses a PT1/8 port, a Ø16mm piston rod, and fixed NBR elastomer bumpers at both ends rather than adjustable air cushions.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 250 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 ACQJ40X250-10
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 ACQJ40X250-10 Is Used
Machining Fixture Positioning
Dial in the exact clamping extension on a CNC fixture without machining custom spacers, allowing rapid part-changeover.
Carton Sealing Stops
Tune the pressing stroke on packaging equipment to accommodate varying box heights while maintaining full retraction.
Prototype Press Testing
Establish optimal trial end positions on a test rig by turning the external stop, locking the final travel distance once confirmed.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-10 the Right Cylinder?
When sizing this 40mm bore, dropping to a 32mm bore reduces push force to 402.1 N at 0.5 MPa, while stepping up to a 50mm bore increases it to 981.8 N. If your extend endpoint never varies, a fixed-stroke ACQ cylinder is simpler and more cost-effective. For this adjustable model, confirm the 250mm full stroke, 10mm window, female M8x1.25 rod end, and note this unit ships without a -S sensor magnet.
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 ACQJ40X250-10 FAQ
It provides 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 full stroke is 250mm with a 10mm window, allowing an adjustable extend range of 240-250mm.
An external M12x1.25 threaded screw with a lock nut limits the extend distance without changing the piston area, so force remains identical to a standard ACQ. Deceleration is handled by fixed NBR elastomer bumpers at both ends, not adjustable air cushions.
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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