Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-30SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-30SB 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 ACQJ20X90-30SB
The AirTAC ACQJ20X90-30SB is a double-acting JIS compact cylinder featuring an external threaded stop with a lock nut that limits the extend end position. You can fine-tune the usable extend stroke anywhere from 60 mm up to the full 90 mm directly on your machinery, while the retract stroke remains completely unaffected. Because the piston area stays constant, the output force is identical to a standard ACQ of this bore.
This 20 mm bore unit incorporates a male M8x1.25 piston rod end (-B) that couples directly to your load, alongside a built-in magnet (-S) for position sensing. It uses a fixed elastomer bumper at each end for deceleration rather than an adjustable air cushion. Operating pressure spans 0.15 to 1.0 MPa, and the body uses a standard PT port form with an M5x0.8 connection.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-30SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-30SB |
|---|---|
| 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 ACQJ20X90-30SB
| 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 ACQJ20X90-30SB Is Used
Machining Fixture Clamps
Dial in the exact clamping reach on a CNC fixture during prototype runs, shortening the extend stop from 90 mm down to 60 mm without swapping cylinders.
Packaging Product Changeover
Adjust the pusher end position on a packaging line to accommodate different carton depths rapidly, keeping downtime minimal during product transitions.
Assembly Press Trials
Test various insertion depths on an electronic assembly press by turning the external M8x1.25 adjuster, finding the optimal end position before finalizing the setup.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X90-30SB the Right Cylinder?
Choosing this 20 mm bore delivers 157.1 N of push force and 117.8 N of pull force at 0.5 MPa. If your application requires less thrust, dropping down to a 16 mm bore provides 100.5 N push, whereas stepping up to a 25 mm bore yields 245.4 N push for heavier demands. Select this adjustable model when you need on-machine extend-end tuning; if the exact 90 mm stroke never varies, a fixed-stroke ACQ will suffice. Confirm your ordering essentials: 20 mm bore, 90 mm full stroke, 30 mm window, magnet (-S), and male rod thread (-B).
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 ACQJ20X90-30SB FAQ
The usable extend range is 60-90 mm (full 90 mm stroke minus the 30 mm window). The output force is identical to a standard ACQ: push is 157.1 N and pull is 117.8 N at 0.5 MPa, push is 219.9 N at 0.7 MPa, and maximum push is 32 kgf at 1.0 MPa. The retract stroke remains unaffected.
An external M8x1.25 threaded stop with a lock nut mechanically limits how far the rod extends, changing only the stroke length, not the force. The cylinder uses fixed elastomer bumpers for end-of-stroke deceleration, not adjustable air cushions. The included -S magnet works with both reed and electronic solid-state switches for position feedback.
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
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