
The AirTAC Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-30SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø80mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
The AirTAC ACQJ80X90-30SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the EXTEND end position. You can fine-tune the usable extend range from 60 mm up to the full 90 mm directly on your machinery without swapping parts. The RETRACT stroke remains completely unaffected. Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore.
This 80 mm bore model features a Ø25 mm piston rod and PT3/8 port. It includes the -S magnet for positioning via reed or solid-state switches, and the -B male rod-end thread (M22x1.5) for direct load coupling. The R adjuster thread is M20x1.5. Deceleration relies on a fixed NBR elastomer bumper at each end, not an adjustable air cushion.
| Model | Airtac ACQJ80-100 Adjustable Compact Cylinder ACQJ80X90-30SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø80 mm |
| Full stroke | 90 mm |
| Adjuster thread | M20×1.5 |
| Port size | PT3/8 |
| 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 | M16×2.0 (F) / M22×1.5 (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 | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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. |
|---|---|
| 80 | 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).
Dial in the exact 60-90 mm extend position for varying part fixtures on a CNC lathe without machining new stop blocks.
Adjust the extend stroke on-the-fly during product changeovers to push different carton widths onto secondary lanes.
Set trial end positions for pressing bearings, allowing operators to tweak the depth safely before final commitment.
Stepping down to a 63 mm bore drops the 0.5 MPa push force to 1558.6 N, whereas moving up to a 100 mm bore raises it to 3927.0 N. This 80 mm unit delivers 2513.2 N push at 0.5 MPa, striking a balance for medium-heavy tasks. If your end position never varies, a fixed-stroke ACQ cylinder is sufficient. When ordering, verify the 90 mm full stroke, the 30 mm adjuster window, the S magnet, and the B male rod thread.
Quick checklist
The usable extend range is 60-90 mm (full 90 mm stroke minus up to 30 mm). Force is identical to a standard ACQ: push is 2513.2 N and pull is 2267.8 N at 0.5 MPa, push is 3518.5 N at 0.7 MPa, and max push is 513 kgf at 1.0 MPa.
An M20x1.5 threaded stop with a lock nut limits the extend distance without changing the piston area, so force remains constant. Retract is unaffected. The cylinder uses a fixed NBR elastomer bumper for end-of-stroke deceleration, and the -S magnet works with reed or solid-state switches.
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