Airtac BSAID Clamp Cylinder BSAID40X225S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X225S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 225mm stroke and a spring-applied, air-released clamp-lock that holds the rod at ANY position along its travel — with a static holding force of 900 N.
- BoreØ40 mm
- Stroke225 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM12×1.25
- 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 BSAID Clamp Cylinder BSAID40X225S
The AirTAC BSAID40X225-S is a double-acting ISO 15552 profile cylinder featuring a double-rod layout and a spring-applied, air-released clamp-lock. It secures the load at any position along its 225 mm stroke, delivering a static holding force of 900 N. Because it is a double-rod enclasp design, its thrust is equal in both directions at 528 N (0.5 MPa), and the second rod allows you to mount a position flag or secondary tool on the opposite end for dual-side guidance. You must size the holding force (900 N) against your static load, as this is a separate quantity from the cylinder thrust.
The clamp operates via a third G1/8 enclasp port, requiring 0.15-0.7 MPa to release. Remember that the variable air cushion only decelerates the piston near stroke end; the clamp itself holds the load. The lock engages only after the rod has stopped, meaning it cannot brake a moving rod. Furthermore, you must balance air pressure on both sides before unlocking, or the rod may jump abruptly.
Airtac BSAID Clamp Cylinder BSAID40X225S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X225S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 900 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSAI datasheet (ISO 15552). Operating pressure is 0.15–0.7 MPa (lower than a plain SAI). Port options: PT / G.
How the Clamp-Lock Holds
static holding force (Ø40 mm)
A spring-applied gripper clamps the rod and holds the load at any position in the stroke — not just at the stroke end (that is a SAIL) — and it is bidirectional: it holds whether the rod was extending or retracting.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (900 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID40X225S Is Used
Vertical Mid-Stroke Hold
Suspends and locks a vertical load at any point in the 225 mm travel, preventing gravity drops during an air-loss event.
Machining Position Lock
Freezes the dual rods securely during drilling or milling, using the 900 N clamp rather than relying on air pressure.
Dual-Side Tooling Mount
Uses the second rod end to mount a secondary actuator or counterweight while maintaining bidirectional clamping.
Is the Airtac BSAID Clamp Cylinder BSAID40X225S the Right Clamp-Lock?
Step down to a 32 mm bore (345 N thrust, 600 N hold) if your load is lighter, or move up to a 50 mm bore (825 N thrust, 1400 N hold) for heavier suspended masses. Choose this BSAID clamp-lock over a stroke-end-only SAIL when you need to freeze the rod mid-travel. A plain SAID suffices if no intermediate holding is required. For safety-critical stops, add an independent mechanical measure, as this lock is not a dynamic brake.
This BSAID40X225-S replacement features a 40 mm bore, 225 mm stroke, PT tapered ports, a carbon steel rod, and an -S magnet for CMSE reed and DMSE solid-state sensors. It accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts (omitting FB/CA/CB/CR). Since the stroke exceeds 300 mm, use an external guide to prevent side-load wear on the 16 mm rod.
Quick checklist
- ✓ Hold needed at any position?
- ✓ Or stroke-end only → use SAIL
- ✓ Holding force ≥ your load
- ✓ Balanced-pressure unlock circuit
- ✓ Extra safety measure for people
Airtac BSAID Clamp Cylinder BSAID40X225S FAQ
The clamp-lock provides a static holding force of 900 N. It locks the rod at any position bidirectionally, but only after the cylinder has stopped moving.
You must balance the air pressure on both sides of the piston before applying air to the G1/8 enclasp port. If pressures are unbalanced, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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