Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 60mm 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
- Stroke60 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 ACEJ20X60-20B
The ACEJ20X60-20B is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 60 mm stroke by up to 20 mm on site, giving a usable range of 40-60 mm without changing the cylinder. At 0.5 MPa the 20 mm bore delivers 157.1 N push and 117.8 N pull, rising to 219.9 N push at 0.7 MPa. The male rod thread (B code) bolts straight to tooling, and the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
In practice, plan on roughly 94 N of real work at 0.5 MPa (about 0.6 of the push rating), which is a vertical lift of about 9 kg - halve that to roughly 4-5 kg for a 2:1 margin and you can match it directly to part weight. The hard-anodized aluminium body carries a S45C hard-chrome rod, a fixed TPU bumper sits at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). Note this unit has no magnet fitted; order the -S code if you later need CMSE / DMSE switch sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 60 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 ACEJ20X60-20B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -20 | 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 ACEJ20X60-20B Is Used
Small-part press-fit station
The 157.1 N push at 0.5 MPa (219.9 N at 0.7 MPa) presses dowels or bearings into light housings, with the 40-60 mm adjustable range letting the setter dial in the seating depth.
Packaging line product stopper
Extends across a conveyor lane to stop cartons or blisters at a gate; the compact body mounts under guarding where an ISO 15552 profile cylinder would be about twice as long.
Lab sample elevator
Lifts about 9 kg vertically at 0.5 MPa (use 4-5 kg with a 2:1 margin), raising sample trays or microplate stacks between two fixed levels in compact analytical equipment.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20B the Right Cylinder?
Compare both directions before committing: the next bore down (16 mm) gives only 100.5 N push at 0.5 MPa, while the 25 mm bore reaches 245.4 N, so pick the 20 mm when your load sits between roughly 90 and 150 N with margin. The 60 mm stroke with a 20 mm trim window suits stations where the final position is tuned during commissioning. Remember the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Mounting: FA flange, LB foot and FTC brackets plus I/Y rod knuckles fit the ISO 21287 face; the male thread here removes the need for a rod coupling on many fixtures.
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 ACEJ20X60-20B FAQ
At 0.5 MPa: 157.1 N push and 117.8 N pull. At 0.7 MPa: 219.9 N push and 164.9 N pull. Theoretical maximum is 32 kgf at 1.0 MPa. The ordered stroke is 60 mm and the -20 code gives a 20 mm adjustment window, so the extend stroke can be trimmed anywhere in a 40-60 mm range via the external stop screw. Speed is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi).
It is an ISO 21287 compact cylinder: hard-anodized aluminium body, S45C hard-chrome plated 10 mm rod, threaded aluminium covers and a fixed TPU bumper at each end that only decelerates the piston at the ends of travel. This unit ships without a magnet, so no switch can be read; the optional -S magnet enables CMSE / DMSE reed or solid-state switches. Mounting options on the ISO 21287 face include FA flange, LB foot, FTC brackets and I/Y rod knuckles.
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