Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20S
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20S 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 ACQJ20X90-20S
The AirTAC ACQJ20X90-20S is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the extend stroke. You can fine-tune the rod end position on the machine from 70 to 90 mm without changing parts. The retract movement remains completely unaffected by this adjustment.
Because the piston area stays the same, the output force is identical to a standard ACQ of this bore, delivering 157.1 N push at 0.5 MPa. The body uses a fixed elastomer bumper for end-of-stroke deceleration rather than an adjustable air cushion. Equipped with a built-in magnet (-S), the cylinder operates with both reed and solid-state electronic switches.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20S Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20S |
|---|---|
| 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 ACQJ20X90-20S
| 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 ACQJ20X90-20S Is Used
Product Changeover Stops
Quickly dial in a new extend position from 70 to 90 mm on packaging lines when switching between different carton sizes, avoiding the need to swap out physical spacer rings.
Sorting Diverter Setup
Adjust the stroke length on-site to perfectly position a diverting gate for varying package widths on a conveyor system without disassembling the pneumatic assembly.
Trial End Positions
Determine the optimal clamping depth on a test rig by threading the external stop in or out, safely testing different extend endpoints before finalizing the mechanical setup.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20S the Right Cylinder?
Choosing this bore gives 157.1 N push and 117.8 N pull at 0.5 MPa. If you need less force, the adjacent 16 mm bore provides 100.5 N push, while stepping up to the 25 mm bore yields 245.4 N push. A fixed-stroke ACQ20 is sufficient if your end position never varies, but this adjustable model excels for product-changeover tasks. When ordering, verify the 20 mm bore, 90 mm full stroke, 20 mm window, the -S magnet, and the default female M5x0.8 rod-end thread.
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 ACQJ20X90-20S FAQ
It provides 157.1 N push and 117.8 N pull at 0.5 MPa, 219.9 N push at 0.7 MPa, and a maximum push of 32 kgf at 1.0 MPa. The full stroke is 90 mm with a 20 mm adjustable window, giving a usable extend range of 70-90 mm. The external adjuster uses an M8x1.25 thread.
No, the threaded stop only changes the extend stroke length, not the piston area, so force remains identical to a standard ACQ. The cylinder relies on a fixed elastomer bumper at each end for deceleration rather than an adjustable air cushion, and the -S magnet works with reed or electronic switches.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
Request a Quote for Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.