Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20B
The AirTAC Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20B is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø20mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ20 mm
- Full stroke100 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 ACQJ20X100-20B
The AirTAC ACQJ20X100-20B 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 80 mm up to the full 100 mm stroke directly on your machinery without swapping parts. The retract stroke remains completely unaffected by this adjustment.
Because the piston area stays the same, the output force equals a standard ACQ of this bore, delivering 157.1 N push and 117.8 N pull at 0.5 MPa. This bore 20 unit features a 10 mm rod, an M8x1.25 male rod-end thread for direct load coupling, an M8x1.25 adjuster thread, and fixed elastomer bumpers at both ends for end-of-stroke deceleration.
Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20B Technical Specifications
| Model | Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20B |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø20 mm |
| Full stroke | 100 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 ACQJ20X100-20B
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 ACQJ20X100-20B Is Used
Machining Fixture Stops
Dial in the exact clamping reach on a CNC machining fixture during prototype runs or tooling setups without machining new stop collars.
Packaging Diverters
Adjust the actuation length of a sorting gate on a packaging line to handle varying carton sizes on the fly.
Laboratory Press Frames
Set precise upper travel limits for a testing press to accommodate different sample heights while maintaining consistent force.
Is the Airtac ACQJ12~25 Adjustable Compact Cylinder ACQJ20X100-20B the Right Cylinder?
When sizing this bore 20 unit, consider the neighbouring bores: a bore 16 provides 100.5 N push, while a bore 25 yields 245.4 N push at 0.5 MPa. If your extend end position never varies, a fixed-stroke ACQ cylinder is sufficient. To order this adjustable version correctly, confirm the 20 mm bore, 100 mm full stroke, 20 mm window, the male rod thread option, and note that this configuration ships without a magnet.
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 ACQJ20X100-20B FAQ
The force is identical to a standard ACQ bore 20, providing 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 usable extend range is 80-100 mm, created by shortening the 100 mm full stroke by up to the 20 mm window.
An external M8x1.25 threaded stop with a lock nut limits the extend stroke, allowing on-machine end-position tuning without changing parts. The retract stroke is unaffected, and force remains unchanged because the adjuster only alters stroke length. This specific model ships without a magnet, though the body retains sensor grooves for adding external reed or solid-state 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
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