Airtac ACE Compact Cylinder ACE50X125B
The AirTAC Airtac ACE Compact Cylinder ACE50X125B is a genuine double acting ISO 21287 compact air cylinder with a Ø50mm bore and 125mm stroke, 1/8" 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.
- BoreØ50 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.5
- 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 ACE Compact Cylinder ACE50X125B
This AirTAC ACE50X125B is a double acting ISO 21287 compact cylinder with a 50 mm bore and a 125 mm stroke, delivering 981.7 N of push force at 0.5 MPa. Its hard-anodized aluminium body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight machine frames and guard enclosures where a full-length unit will not.
With a male rod thread (B code) and a 1/8" PT port, this model is ready for direct linkage to a clevis or rod end. The fixed TPU bumper at both ends absorbs end-of-stroke impact, and the S45C hard-chrome rod resists wear. Since this unit has no optional -S magnet, it cannot accept CMSE or DMSE sensors; order the -S variant if position sensing is needed. As a practical rule, plan for about 589 N of safe working load at 0.5 MPa, which lifts roughly 60 kg vertically with a 2:1 safety margin.
Airtac ACE Compact Cylinder ACE50X125B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE50X125B |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACE Compact Cylinder ACE50X125B
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 ACE Compact Cylinder ACE50X125B Is Used
Fixture Clamping
Use the ACE50X125B to clamp a 50 kg workpiece in a CNC milling fixture. The 981.7 N push at 0.5 MPa provides secure holding, and the compact body fits under the machine guard without protruding.
Package Stop Gate
In a packaging line, this cylinder can actuate a stop gate to divert boxes weighing up to 40 kg. The 125 mm stroke clears the conveyor path, and the fixed TPU bumper prevents noisy end-of-stroke impact.
Press Tray Ejector
Mount the ACE50X125B on a stamping press to eject finished parts from a die. The 881.2 N pull force at 0.5 MPa retracts the rod reliably, and the short body saves space beside the press frame.
Is the Airtac ACE Compact Cylinder ACE50X125B the Right Cylinder?
For lighter duty in a smaller footprint, consider the ACE40X125 with 628.3 N push at 0.5 MPa, or step up to the ACE63X125 for 1558.6 N push if your application needs more force. This 50 mm bore model is a balanced middle ground for medium-force automation tasks.
Because the stroke is 125 mm, which is within the 250 mm maximum standard stroke for this bore, it is a standard off-the-shelf unit. The male rod thread simplifies mounting with a rod-end accessory, and the ISO 21287 face allows direct attachment of FA/FB flange, LB foot, or CA/CB clevis brackets. Remember, without the -S magnet, sensor feedback is not possible, so plan your control scheme accordingly.
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 ACE Compact Cylinder ACE50X125B FAQ
At 0.5 MPa, the push force is 981.7 N and the pull force is 881.2 N. At 0.7 MPa, push is 1374.4 N and pull is 1233.7 N. The theoretical maximum force is 200.2 kgf at 1.0 MPa. Operating pressure range is 0.15-1.0 MPa (22-145 psi), with a proof pressure of 1.5 MPa (215 psi).
The ACE50X125B has a hard-anodized aluminium body that is about 50% shorter than an ISO 15552 profile cylinder, making it ideal for tight spaces. It uses a fixed TPU bumper at both ends to absorb impact, not an adjustable cushion. The optional -S magnet is not fitted on this model, so CMSE or DMSE sensors cannot be mounted unless you order the -S version.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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