Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X60-40SB
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X60-40SB is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 60mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke60 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 ACQJ20X60-40SB
The AirTAC ACQJ20X60-40SB is a double-acting JIS compact cylinder with an external threaded stop and lock nut that limits the EXTEND end position. You get a usable extend range of 20-60mm (the 60mm full stroke minus up to a 40mm window). The RETRACT stroke remains completely unaffected. Because the piston area stays the same, output force is identical to a standard ACQ of this bore.
This unit delivers 157.1N push and 117.8N pull at 0.5MPa, with a maximum push of 32kgf at 1.0MPa. It features a 10mm piston rod, an M8x1.25 male rod-end thread (-B) for direct load coupling, and an M5x0.8 port. The body includes fixed elastomer bumpers at both ends and integrated magnetic-switch grooves. The -S option provides a built-in piston magnet compatible with reed or electronic solid-state sensors.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X60-40SB Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X60-40SB |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 60 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 ACQJ20X60-40SB
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 ACQJ20X60-40SB Is Used
Product Changeover Stops
Dial in the extend position from 20 to 60mm on packaging lines when switching carton sizes, avoiding the need to swap out cylinder hardware.
Variable Diverting Arms
Fine-tune the pusher extension distance on conveyor sorting gates to handle varying package widths on the fly.
Trial End Positions
Safely test and set precise extension limits during CNC fixture prototyping without machining new spacer blocks.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X60-40SB the Right Cylinder?
Comparing sizes: the smaller bore 16 yields 100.5N push at 0.5MPa, whereas stepping up to bore 25 provides 245.4N push. This bore 20 hits a solid middle ground at 157.1N. If your machine never requires end-position tuning, a fixed-stroke ACQ20 cylinder will suffice and saves adjustment setup. When ordering, verify the 20mm bore, 60mm full stroke, 40mm window, the -S magnet for sensing, and the -B male rod 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 ACQJ20X60-40SB FAQ
The usable extend range is 20-60mm (60mm full stroke minus the 40mm window). It provides 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 force is identical to a standard ACQ because the adjuster only changes stroke length, not piston area.
An external M8x1.25 threaded stop with a lock nut limits the extend distance, while the retract stroke is unaffected. Deceleration relies on fixed elastomer bumpers, not adjustable air cushions. A plain ACQ-type cylinder does not hold its load if air is lost or the valve is centered; for a fail-safe hold, use an external rod lock or pilot-operated check valve.
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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