Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100B
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100B 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 ACQJ40X250-100B
The AirTAC ACQJ40X250-100B is a double-acting JIS compact cylinder featuring a 250mm stroke and a male M14x1.5 piston rod end. An external M12x1.25 threaded stop with a lock nut permits on-machine extend position tuning. You can shorten the outward stroke by up to 100mm, yielding a usable extension range of 150-250mm. The retract distance remains completely unaffected.
Because the adjuster solely limits travel and does not alter piston area, output force mirrors a standard ACQ. This long-stroke made-to-order variant exceeds the 100mm standard maximum for this bore. It incorporates fixed NBR elastomer bumpers at both ends and operates at 30-500 mm/s. Note that this configuration ships without a sensor magnet, though the body retains magnetic-switch grooves for adding reed or solid-state electronics later.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100B Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100B |
|---|---|
| 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 ACQJ40X250-100B
| 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 ACQJ40X250-100B Is Used
Multi-Depth Machining Stops
Dial in varying material thicknesses on a CNC fixture by turning the external stop screw, avoiding the need to fabricate custom spacer blocks for each part run.
Packaging Line Changeover
Rapidly adapt end-of-stroke positions for different carton sizes on a sealing station, cutting mechanical setup time during product transitions.
Press Fit Prototyping
Evaluate different insertion depths on an assembly press without swapping cylinders, safely testing trial end positions before finalizing the machine design.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X250-100B the Right Cylinder?
Comparing bores, the 32mm option yields 402.1N push while the 50mm provides 981.8N at 0.5MPa; this 40mm bore delivers 628.3N push and 527.8N pull. If your application never requires end-position changes, a fixed-stroke ACQ cylinder is simpler and sufficient. When ordering this unit, verify the 250mm full stroke, 100mm window, male M14x1.5 rod thread, and PT1/8 porting. Since it lacks the -S magnet, factor in external sensors if needed.
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 ACQJ40X250-100B FAQ
It provides 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 full stroke is 250mm, and with the 100mm adjustment window, the usable extend range is 150-250mm.
The external M12x1.25 stop modifies only the extend stroke length, leaving piston area and force identical to a standard ACQ. Deceleration relies on fixed NBR elastomer bumpers at both ends, not adjustable air cushions. Also, a plain compact cylinder will drift if air pressure is lost, requiring an external rod lock for fail-safe load holding.
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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.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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