Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 90mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke90 mm
- Port sizeM5×0.8
- Adjuster threadM8×1.25
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B
The ACQJ20X90-100B 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 0 up to 90mm directly on your equipment without changing parts, while the RETRACT stroke remains completely unaffected. Because the piston area stays the same, the output force is identical to a standard ACQ of this bore.
This bore 20mm unit features a male-thread piston rod end (M8x1.25) for direct load coupling, an M8x1.25 external adjuster thread, and an M5x0.8 port. It runs at 30-500 mm/s and relies on a fixed elastomer bumper at each end for deceleration rather than an adjustable air cushion. The body includes sensor grooves, though this specific configuration ships without a magnet.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 90 mm |
| Adjuster thread | M8×1.25 |
| Port size | M5×0.8 |
| 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 | M5×0.8 (F) / M8×1.25 (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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | 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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B Is Used
Machining Fixture Stops
Dial in the exact extend position from 0 to 90mm on a machining fixture when raw material thickness varies, ensuring the rod end contacts the part securely without re-machining components.
Product Changeover Diverters
Adjust the stroke length on the fly for conveyor diverters handling different package sizes, using the external stop to set new end positions rapidly during production line changeovers.
Assembly Press Trial Positions
Test multiple extend endpoints on an assembly press to find the optimal pressing depth, locking the adjuster nut in place once the perfect 0-90mm position is achieved.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B the Right Cylinder?
When sizing this bore 20mm unit, stepping down to a bore 16mm yields 100.5N push at 0.5MPa, while stepping up to a bore 25mm provides 245.4N. If your application never requires altering the end position, a fixed-stroke ACQ cylinder will accomplish the same task more simply. To order this adjustable version correctly, confirm the 20mm bore, 90mm full stroke, 100mm window, the male B rod thread, and whether you need the S magnet for reed or solid-state sensors.
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 ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-100B FAQ
This cylinder delivers 157.1N push and 117.8N pull at 0.5MPa, 219.9N push at 0.7MPa, and a maximum push of 32kgf at 1.0MPa. The full stroke is 90mm, but the external stop allows you to shorten the extend stroke by up to 100mm, giving a usable extend range of 0-90mm.
The external M8x1.25 threaded stop with a lock nut limits only the extend stroke length, meaning the output force remains identical to a standard ACQ because the piston area is unchanged. The retract stroke is unaffected, and the cylinder uses fixed elastomer bumpers at both ends for deceleration rather than adjustable air cushions.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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