Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke90 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB
The AirTAC ACQJ40X90-75SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend stroke. You can fine-tune the usable extend range from 15 mm up to the full 90 mm directly on your equipment, while the retract stroke remains completely unaffected. Because the piston area stays constant, output force equals a standard ACQ, giving 628.3 N push at 0.5 MPa.
This 40 mm bore unit uses a PT1/8 port and a 16 mm rod. The male piston rod end (M14x1.5) couples directly to your load. It includes the -S magnet for positioning detection via reed or electronic solid-state switches, and relies on a fixed NBR elastomer bumper at each end for end-of-stroke deceleration.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 90 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 ACQJ40X90-75SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 ACQJ40X90-75SB Is Used
Machining Fixture Clamping
Dial in the exact clamping reach on a CNC machining fixture. The external stop lets operators shift the extend endpoint from 15 to 90 mm to accommodate varying raw part thicknesses without machining new spacers.
Conveyor Diverting Stops
Set precise product halt positions on a packaging conveyor. Adjust the stroke down from 90 mm to match different carton sizes during product changeovers, ensuring the male M14x1.5 rod halts boxes accurately.
Assembly Press Positioning
Establish trial end positions for pressing bearings on an assembly line. The lock nut secures the adjusted extend depth, while the built-in magnet triggers electronic sensors to verify press completion.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB the Right Cylinder?
Choosing this 40 mm bore provides 628.3 N push and 527.8 N pull at 0.5 MPa. If you need less force, stepping down to a 32 mm bore yields 402.1 N push, while moving up to a 50 mm bore offers 981.8 N push. A fixed-stroke ACQ is sufficient if your extend position never requires adjustment. Confirm your ordering essentials: 40 mm bore, 90 mm full stroke, 75 mm adjuster window, male rod thread (-B), and magnet (-S).
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 ACQJ40X90-75SB FAQ
At 0.5 MPa it provides 628.3 N push and 527.8 N pull, and 879.6 N push at 0.7 MPa. The maximum push is 128 kgf at 1.0 MPa. The full stroke is 90 mm with a 75 mm adjustment window, allowing a usable extend range of 15-90 mm.
No, the external M12x1.25 adjuster changes only the extend stroke length, not 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. For high energy loads, add an external shock absorber.
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
Request a Quote for Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X90-75SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.