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AirTAC BSAI Series · ISO 15552 Clamp-Lock Cylinder

Airtac BSAID Clamp Cylinder BSAID63X400S

The AirTAC Airtac BSAID Clamp Cylinder BSAID63X400S is a genuine double-acting ISO 15552 cylinder with a Ø63mm bore, 400mm 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 2200 N.

  • BoreØ63 mm
  • Stroke400 mm
  • Cylinder portG3/8
  • TypeDouble rod (BSAID)
  • Enclasp portG1/8
  • Rod threadM16×1.5
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About the Airtac BSAID Clamp Cylinder BSAID63X400S

The AirTAC BSAID63X400-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and an integrated spring-applied, air-released clamp-lock. It delivers a bidirectional thrust of 1402 N at 0.5 MPa, equal in both directions, while the enclasp mechanism provides a static holding force of 2200 N. Remember that holding force and thrust are distinct quantities; you must size the clamp's 2200 N capacity against your static load, not the cylinder's thrust. The clamp locks at any position along the 400 mm stroke, but only after the rod has stopped moving.

A rod extends from both ends, allowing you to mount a workpiece on one side and a guide or position flag on the other for dual-side anti-rotation. The enclasp unlocks via a third G1/8 port, requiring balanced air pressure on both sides of the piston to prevent the rod from jumping abruptly. This unit includes a magnet for CMSE reed and DMSE electronic sensors. Note that the variable air cushion only decelerates the piston near stroke ends; it does not hold the load.

Airtac BSAID Clamp Cylinder BSAID63X400S Technical Specifications

ModelAirtac BSAID Clamp Cylinder BSAID63X400S
SeriesBSAI ISO 15552 clamp-lock cylinder
Bore sizeØ63 mm
Stroke400 mm
TypeDouble rod (BSAID), double acting
Cylinder portG3/8
Rod threadM16×1.5
Lock typeSpring-applied, air-released clamp (any position)
Static holding force2200 N
Enclasp / unlock portG1/8
Operating pressure0.15 – 0.7 MPa
Temperature-20 to +70 °C
Speed range30 – 800 mm/s
Max strokeUp to 1000 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

2200 N
static holding force (Ø63 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.

Safety: the clamp locks only AFTER the rod has stopped — it is not a moving-rod brake. Unlock only when the pressures on both sides of the piston are balanced, or the rod can move abruptly. If human safety depends on the hold, add an independent safety measure.

Theoretical Output Force (Ø63mm)

PressurePush forcePull force
0.5 MPa1559 N1402 N
0.7 MPa (max)2182 N

Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (2200 N) is separate from cylinder thrust. Size with a margin.

Where the Airtac BSAID Clamp Cylinder BSAID63X400S Is Used

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Vertical Axis Holding

Locks a 1402 N load at any point along a 400 mm vertical travel to prevent dropping when air pressure is removed.

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Power Loss Safety

Spring-applied clamp engages instantly upon air loss to freeze the double-rod position securely mid-stroke.

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Machining Position Hold

Provides rigid 2200 N workholding for inspection or machining, using the opposite rod end for a position flag.

Is the Airtac BSAID Clamp Cylinder BSAID63X400S the Right Clamp-Lock?

Choose this double-rod model when you need equal push and pull forces (1402 N both ways) plus anti-rotation guidance. If your application only requires holding at the stroke end, a SAIL cylinder suffices, but BSAI/BSAID locks anywhere. If you need higher force, stepping up to the bore 80 yields 2268 N thrust and 3600 N holding force; stepping down to bore 50 gives 825 N thrust and 1400 N holding force. Because this is a 400 mm stroke, an external guide is recommended to handle side loads. The 3/8 cylinder ports and G1/8 unlock port use PT tapered threads. Mounting options omit FB, CA, CB, and CR, accepting Basic, FA, LB, TC, TCM1, and TCM2. The -S magnet works with AirTAC CMSE and DMSE sensors.

For safe operation, note the clamp cannot brake a moving rod; it only holds after the cylinder stops. Safety-critical loads require an additional independent safety measure. Always balance pressures before unlocking to avoid abrupt rod movement.

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
Ask an Engineer

Airtac BSAID Clamp Cylinder BSAID63X400S FAQ

The clamp-lock provides a static holding force of 2200 N. It locks at any position along the 400 mm stroke, but only after the rod has completely stopped moving.

The clamp unlocks via a third G1/8 port. You must balance the air pressure on both sides of the piston before releasing the clamp, otherwise the rod can move abruptly.

Related AirTAC Lock & Standard Cylinders

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