Airtac BSED Clamping Double Acting Cylinder BSED40X900
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X900 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, 900mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke900 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 BSED40X900
The AirTAC BSED40X900 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, delivering equal drive force in both directions—about 528 N each way at 0.5 MPa. The integrated collet lock provides a 900 N bidirectional static holding force, clamping the rod securely with no live air required.
This 900 mm stroke unit is a made-to-order configuration exceeding the 800 mm standard maximum, utilizing a 30 mm adjustable air cushion at both ends. It features a PT1/4 cylinder port, a separate G1/8 lock-release port, and a 16 mm rod with an M12x1.25 thread. This SKU does not include a magnet, so position sensing is not supported.
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 BSED40X900 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 BSED40X900 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X900 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 BSED40X900
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×900 | 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 BSED40X900 Is Used
Overhead Z-Axis Pick & Place
Holds a 900 N vertical load securely during an air-loss event, while the double-rod provides equal 739 N lifting and lowering force at 0.7 MPa.
Long-Stroke Pallet Stopper
Uses the 900 mm extension to intercept large pallets, using the rear rod for a flag cam while the 900 N lock resists upstream impact when engaged.
Symmetric Transfer Shuttle
Moves a shuttle carriage with identical 528 N force in both directions at 0.5 MPa, locking the 900 mm stroke rigidly at either end of the cycle.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X900 the Right Cylinder?
Select this 40 mm bore model when your application demands both symmetric force and fail-safe holding; verify your load to hold is 900 N or less. If you need less holding or drive force, the 32 mm bore offers 345 N at 0.5 MPa and a 600 N hold. If you need more, stepping up to the 50 mm bore provides 825 N at 0.5 MPa and a 1400 N hold. Operating pressure is capped at 0.7 MPa.
Because the 900 mm stroke exceeds the 800 mm standard, this cylinder is made-to-order and requires external guide rails to prevent excessive side-load bending on the extended rod. Remember the lock is a static hold, not a dynamic brake: engage it only after the rod stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. Replacement requires matching the 40 mm bore, 900 mm stroke, PT port, and Basic/LB/FA/TC mounting.
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 BSED40X900 FAQ
The double-rod drive force is equal both ways: 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf). The fail-safe static holding force of the spring-applied collet lock is 900 N. The lock holds the load with no live air, but it is not a dynamic brake.
Release the lock only after the rod has stopped and both piston sides are pressure-balanced, allowing at least 0.5 seconds for the collet to disengage via the G1/8 port. The 900 mm stroke exceeds the 800 mm standard maximum, making this a made-to-order cylinder that requires external guides to manage side loads.
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Standard models are processed and dispatched in 3-5 business days.
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