Airtac ACED Double-acting Compact Cylinder ACED125X250B
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED125X250B is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø125mm bore and 250mm stroke, 1/4" 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.
- BoreØ125 mm
- Stroke250 mm
- Port size1/4"
- Acting typeDouble acting, double rod
- Rod threadM16×2.0
- CushionFixed TPU bumper (both ends)
- 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 ACED Double-acting Compact Cylinder ACED125X250B
The ACED125X250B is a double acting, double-rod compact cylinder built to ISO 21287: a 125 mm bore with a 25 mm piston rod leaving BOTH covers, so the through-rod gives equal force in each direction and resists rotation and side load. At 0.5 MPa it delivers 5890.5 N either way (8246.7 N at 0.7 MPa), and the male rod thread (B code) bolts straight to your tooling. The hard-anodized aluminium body with an S45C hard-chrome plated rod runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), 30-500 mm/s.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters when a 250 mm stroke must fit inside a heavy press jig or a guarded gantry. A fixed TPU bumper at each end absorbs end-of-stroke shock. For sizing: the rod-side thrust of 5890.5 N at 0.5 MPa lifts about 600 kg vertically, so with a 2:1 margin plan on roughly 300 kg of real vertical load. Note that this plain double-rod cylinder drifts when air is lost - for a held load add a rod lock or pilot check.
Airtac ACED Double-acting Compact Cylinder ACED125X250B Technical Specifications
| Model | Airtac ACED Double-acting Compact Cylinder ACED125X250B |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø125 mm |
| Stroke | 250 mm |
| Acting type | Double acting, double rod |
| Port size | 1/4" |
| Rod thread | M16×2.0 |
| 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 300 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 (Ø125mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 5890 N |
| 0.7 MPa | 8247 N |
| Max (@1.0 MPa) | 1201 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACED Double-acting Compact Cylinder ACED125X250B
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 125 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| 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 ACED Double-acting Compact Cylinder ACED125X250B Is Used
Heavy press jig clamping
5890.5 N at 0.5 MPa from both rod ends lets one cylinder clamp a steel weldment from either side of a machining jig, with the through-rod keeping the tool plate square under side load.
Pallet elevator push columns
A pair of ACED125X250B columns lifts about 300 kg per cylinder vertically with a 2:1 margin, and the short ISO 21287 body fits the 250 mm stroke inside a low pit frame.
Billet ejector on forging lines
The back-end rod drives a sensor flag or counter-face platen while the front rod ejects hot billets, both strokes pushing with equal 8246.7 N at 0.7 MPa.
Is the Airtac ACED Double-acting Compact Cylinder ACED125X250B the Right Cylinder?
At 125 mm bore this is the top of the ACED range: 5890.5 N at 0.5 MPa both directions. If your load needs under 3769.9 N at 0.5 MPa, the ACED100 saves space and air; if you need more than 5890.5 N, confirm from datasheet - 125 mm is the largest bore listed. The 250 mm stroke sits within the 300 mm max standard stroke for this bore, so no made-to-order surcharge applies.
This code has no S, so there is no magnet and no CMSE / DMSE switch can be fitted - order the -S variant if position sensing is needed. Mounting brackets (FA/FB flange, LB foot, FTC) and I/Y rod knuckles bolt to the ISO 21287 face. Rod end is male thread (B); ports are 1/4" PT.
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 ACED Double-acting Compact Cylinder ACED125X250B FAQ
Yes - the double-rod design means both strokes use the rod-side area, so force is equal either way: 5890.5 N at 0.5 MPa and 8246.7 N at 0.7 MPa, with a maximum of 1201.3 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, ports 1/4" PT, rod 25 mm with male thread (B code).
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so a 250 mm stroke fits where a full-length cylinder will not. A fixed TPU bumper at each cover absorbs end-of-stroke energy; it only decelerates the piston and never locks or holds a load - use a rod lock or pilot check if the load must stay put on air loss. Switches need the optional -S magnet code; this non-S model has no magnet, so no CMSE / DMSE sensor can be mounted.
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