
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-50SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 200mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ40X200-50SB is a double-acting JIS compact cylinder featuring an external extend stop. A threaded adjuster with a lock nut limits how far the rod travels out, yielding a usable extension range of 150-200mm from the 200mm total length. The retract distance remains fixed. This unit includes a male M14x1.5 rod end and a piston magnet for sensing.
Because the piston area stays the same, output force equals a standard ACQ of this bore: 628.3N push and 527.8N pull at 0.5MPa. The 200mm travel exceeds the 100mm standard maximum for a 40mm bore, making this a long-stroke made-to-order variant. It uses a fixed NBR elastomer bumper at each end and PT1/8 ports.
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X200-50SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 200 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.
| 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.
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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).
Dial in the exact clamping extension on a CNC milling fixture during part changeovers without fabricating new spacer blocks.
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Establish optimal end-of-stroke contact points on short-run stamping equipment during initial setup and testing.
For lower push needs, a 32mm bore yields 402.1N at 0.5MPa, while stepping up to 50mm provides 981.8N. If your machine never requires altering the end position, a fixed-stroke ACQ will suffice. When ordering this adjustable version, verify the 40mm bore, 200mm length, 50mm window, the male M14x1.5 rod thread, and the -S magnet requirement.
Quick checklist
It delivers 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 usable extend range is 150-200mm (200mm total minus the 50mm window).
The external M12x1.25 threaded stop with lock nut physically limits the outward travel distance. It does not change the piston area, so force remains identical to a standard ACQ. The unit relies on fixed elastomer bumpers for deceleration, and the built-in magnet works with reed or solid-state switches.
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