Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 90mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
- BoreØ20 mm
- Stroke90 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB
The ACEJ20X90-75SB is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 90 mm stroke by up to 75 mm, giving a usable range of 15-90 mm without changing the cylinder. On a 20 mm bore it pushes 157.1 N and pulls 117.8 N at 0.5 MPa (219.9 N push at 0.7 MPa), and a practical plan is to size real work at roughly 94 N, about 60% of the push rating, so the actuator keeps margin across the 0.15-1.0 MPa (22-145 psi) operating band.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach. The hard-anodized aluminium barrel carries a hard-chrome plated S45C rod with a male thread (the B code), fixed TPU bumpers at both ends absorb end-of-stroke shock, and because this model carries the optional -S magnet, CMSE / DMSE switches can be clamped into the body slots to flag end positions. Speed range is 30-500 mm/s.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 90 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -75 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
Where the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB Is Used
Multi-product jig clamping
One fixture handles several bracket sizes on a small assembly cell; the stop screw sets the clamp stroke anywhere from 15 to 90 mm per changeover, with the 157.1 N push at 0.5 MPa enough for light clamping.
Position-verified ejector on a packaging line
The fitted -S magnet lets CMSE or DMSE switches confirm the rod has fully extended before a carton is released, while the 90 mm stroke ejects parts from a shallow nest at up to 500 mm/s.
Bench-top press for connector assembly
A compact press head presses terminals into housings; the short body fits under a low gantry, and the 15-90 mm adjustable range lets operators tune the press depth per connector type.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB the Right Cylinder?
At this force class, compare both directions: the 20 mm bore gives 157.1 N push / 117.8 N pull at 0.5 MPa, while a 16 mm bore manages only 100.5 N push and a 25 mm bore reaches 245.4 N push at the same pressure. If your vertical lift needs more than about 8 kg (half of the 16 kgf equivalent of the push force), step up to the 25 mm bore. The 75 mm window suits jigs where several product sizes share one station and the stroke is set on site; note the stop screw only shortens the extend stroke, it is not a mid-stroke lock, so the rod still drifts if air is lost. FA flange or LB foot mountings bolt to the ISO 21287 face, and the -S magnet is already fitted on this version for CMSE / DMSE switch mounting.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N; the theoretical maximum is 32 kgf at 1.0 MPa. The -75 code is a 75 mm adjustment window: an external stop screw shortens the 90 mm extend stroke by up to 75 mm, so the working range is 15-90 mm. It shortens the stroke only and never lengthens it past 90 mm.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange or LB foot mountings bolt straight to the standard face. A fixed TPU bumper at each end absorbs end-of-stroke energy but does not hold or brake a load. The magnet on this model comes from the optional -S code, so CMSE / DMSE switches can be mounted in the body slots; ports are M5x0.8 and the rod end is male thread.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75SB
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.