Airtac BSED Clamping Double Acting Cylinder BSED40X225
The AirTAC BSED Clamping Double Acting Cylinder BSED40X225 combines a double-rod ISO 15552 cylinder — a Ø16mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 900 N in either direction if air is lost. Ø40mm bore, 225mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke225 mm
- Static holding force900 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/4
- Lock-release portG1/8
- 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 BSED Clamping Double Acting Cylinder BSED40X225
The AirTAC BSED40X225 is a double-acting, double-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. Because a rod exits both ends, the annulus area is identical on both sides, yielding equal drive force of 528 N each way at 0.5 MPa and 739 N at 0.7 MPa. The rear rod is ideal for mounting a flag or cam and naturally resists rotation.
The fail-safe collet lock delivers a 900 N static holding force without requiring live air. If pressure drops or an E-stop trips, the rod is clamped bidirectionally at position. Unlocking requires 0.15-0.7 MPa fed to the dedicated G1/8 release port, taking at least 0.5 seconds after the piston sides are pressure-balanced. This SKU lacks a magnet, so CMSE or DMSE position sensors cannot be used.
Double Rod + 900 N Rod Lock (Ø40mm)
A rod exits both ends for symmetric force and back-rod tooling, and a spring clamps the collet so the Airtac BSED Clamping Double Acting Cylinder BSED40X225 holds its position in both directions on air loss or E-stop. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage only after the rod has stopped (not a dynamic brake), and release only when both piston sides are pressure-balanced; allow ≥0.5 s for full release.
Airtac BSED Clamping Double Acting Cylinder BSED40X225 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X225 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 mm |
| Static holding force | 900 N |
| Cylinder port | PT1/4 |
| Lock-release port | G1/8 |
| Configuration | Double rod, double acting |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Unlocking pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M12×1.25 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa (max) | 739 N |
| Max drive (@0.7 MPa) | 75 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 900 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED40X225
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSED): Basic, LB, FA, TC. Related: SED (double rod, no lock), BSE (single-rod rod lock). Sensors CMSE/DMSE fit magnetic BSED.
Where the Airtac BSED Clamping Double Acting Cylinder BSED40X225 Is Used
Vertical Lift Stops
Holds a 900 N vertical load mid-stroke during air loss, while the 528 N both-way drive force smoothly raises and lowers the payload.
Symmetric Transfer Unit
Uses the equal push and pull force to move parts bidirectionally, with the rear rod carrying a cam to trigger external limit switches.
Mid-Stroke Machining Clamp
Provides 739 N of clamping pressure from either direction and locks the 900 N load securely in place for light machining operations.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X225 the Right Cylinder?
Select this 40 mm bore when an application demands symmetric both-way force alongside a 900 N static hold. If your load requires less holding capacity, stepping down to the 32 mm bore provides 345 N of drive force at 0.5 MPa and a 600 N hold. Conversely, if you need more clamping authority, stepping up to the 50 mm bore yields 825 N of drive force at 0.5 MPa and a 1400 N hold.
Always verify your static load is 900 N or less, and engage the lock only after the rod completely stops. For this 225 mm stroke, ensure external guide rails are used to absorb side loads and prevent binding. Direct replacements must match the 40 mm bore, 225 mm stroke, PT1/4 cylinder port, and your chosen mounting style (Basic, LB, FA, or TC).
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 900 N?
- ✓ Back-rod space for tooling/flag
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not a dynamic brake.
- check Release only when both piston sides are pressure-balanced.
- check Allow ≥0.5 s for full release before commanding motion.
- check Feed the G1/8 release port with 0.15–0.7 MPa clean air.
- check Support both rod ends; avoid side load.
- check Use BSED mounting (Basic/LB/FA/TC).
Airtac BSED Clamping Double Acting Cylinder BSED40X225 FAQ
If air is lost, the spring-applied collet immediately clamps the rod, providing a 900 N static holding force to keep the load in place. It is a fail-safe lock, not a dynamic brake, so it must only be engaged after the rod stops moving.
The double-rod design provides equal drive force in both directions: 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a maximum drive force of 75 kgf. Separately, the integrated rod lock provides a 900 N static holding force with no live air required.
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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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