Airtac BSED Clamping Double Acting Cylinder BSED40X300
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X300 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, 300mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke300 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 BSED40X300
The AirTAC BSED40X300 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal drive force in both directions—delivering 528 N each way at 0.5 MPa and 739 N at 0.7 MPa. The extruded aluminum barrel ensures true ISO 15552 dimensional interchangeability without external tie rods.
This fail-safe collet lock delivers a 900 N static holding force with zero live air required, instantly clamping the rod if pressure drops or an E-stop trips. It features a dedicated G1/8 release port and 30 mm adjustable air cushions at both ends. This specific SKU lacks a magnet, meaning it is not compatible with CMSE or DMSE position sensors.
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 BSED40X300 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 BSED40X300 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X300 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 BSED40X300
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×300 | 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 BSED40X300 Is Used
Vertical Lift Jigs
Holds a 900 N vertical load securely during air loss while providing 739 N of equal both-way drive force to raise and lower the jig smoothly.
Pallet Indexing Stop
Uses the twin rods for stable anti-rotation blocking. The fail-safe collet locks the 16 mm rod to prevent bounce-back when absorbing pallet impact.
Symmetric Clamping Fixture
Clamps parts from both sides with identical 528 N force at 0.5 MPa. The rear rod carries a flag cam, and the lock holds position if air is cut.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X300 the Right Cylinder?
Select this 40 mm bore model when your application demands both symmetric push/pull force and mid-stroke holding. Verify your load stays at or below the 900 N static holding capacity. If you need less force, the neighboring 32 mm bore provides 345 N at 0.5 MPa and a 600 N hold; for more power, step up to the 50 mm bore, which yields 825 N at 0.5 MPa and a 1400 N hold.
Remember that the lock is not a dynamic brake: engage it only after the rod completely stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. For this 300 mm stroke, ensure you use a guide rail to prevent excessive side-load wear on the seals. When replacing, match the 40 mm bore, 300 mm stroke, PT1/4 port, and basic 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 BSED40X300 FAQ
The integrated spring-applied collet engages instantly, providing a 900 N static holding force to keep the rod at its stopped position. 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 force both ways: 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a maximum drive of 75 kgf. The static holding force of the rod lock is 900 N, and operating pressure is capped at 0.7 MPa.
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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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Most inquiries answered within 7-8 hours.
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