Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B is a genuine double-acting ISO 15552 cylinder with a Ø63mm bore, 250mm stroke and a built-in 4M310-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ63 mm
- Stroke250 mm
- Built-in valve4M310-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B
The AirTAC SAIF63X250-08B is a double-acting ISO 15552 profile cylinder with a built-in 4M310-08 5/2 solenoid valve, delivering a 1.40 Cv flow. Driven by a DC24V terminal-entry coil drawing 3.0 W, it responds in 0.05 s. Because the valve manifold mounts directly using O10 x O6.5 PU tubing, it eliminates remote plumbing and saves panel space for decentralized machine stations. The cylinder body rates to 1.0 MPa, but the practical operating range is 0.15-0.8 MPa due to the internal pilot valve limits.
This 63 mm bore generates 1559 N push and 1402 N pull at 0.5 MPa. The factory setting retracts the rod when the coil is energised, but you can reposition the valve to extend-when-energised. The 5/2 valve holds position via pilot pressure, not a mechanical lock, so use a SAIL lock cylinder if you need true load holding.
Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø63 mm |
| Stroke | 250 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G3/8 |
| Rod thread | M16×1.5 |
| PU tube | Ø10 × Ø6.5 |
| Built-in valve | 4M310-08 (5/2) |
|---|---|
| Valve flow | 25.0 mm² (Cv 1.40) |
| Max frequency | 4 cycle/sec |
| Coil voltage | DC24V · DC 3.0 W |
| Electrical entry | Terminal · IP65 · B class |
| Response time | 0.05 s and below |
| Operating pressure | 0.15 – 0.8 MPa (valve limit) |
| Speed range | 30 – 800 mm/s |
The cylinder rates to 1.0 MPa but the built-in valve operates 0.15–0.8 MPa, so run the assembled SAIF at 0.15–0.8 MPa. Default: rod retracts when the coil is energised (reconfigurable to extend). Specs follow the official AirTAC SAIF datasheet. Port options: PT / G.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
Sized within the valve's 0.15–0.8 MPa range. Actual usable force is lower than theoretical due to friction and back-pressure.
Model Code: Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 63×250 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M310-08. |
| B | Coil voltage DC24V. |
| I / (blank) | Terminal electrical entry. |
SAIF does not hold its load without air — the valve routes air, it is not a lock. For load-holding use a SAIL (lock) or BSAI (clamp-lock).
Where the Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B Is Used
Decentralized Automation
Ideal for large machines with multiple stations, using the built-in valve to switch locally from a single DC24V signal instead of running long air tubes back to a central manifold.
Medium Force Clamping
Provides 1559 N of push force at 0.5 MPa for securing workpieces during machining, with adjustable air cushions to decelerate the rod smoothly at stroke ends.
Space-Constrained Retrofits
Drops into tight envelopes where installing a separate cylinder and remote valve is impractical, leveraging the ISO 15552 mounting interface for easy interchangeability.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B the Right Choice?
Choose this 63 mm bore for medium-force tasks up to 1559 N at 0.5 MPa; step down to a 50 mm SAIF (982 N push) for lighter loads, or up to an 80 mm bore (2513 N push) if your application demands higher thrust. The integrated 4M310-08 valve with a 1/4" port offers a 25.0 mm2 effective area, making it ideal for high-speed cycling up to 4 cycles/sec without needing a separate remote valve bank. When replacing, verify the 250 mm stroke, 3/8" cylinder port, PT thread type, DC24V terminal coil, and standard carbon steel rod.
Since the stroke is 250 mm, ensure adequate guide support to prevent side-load wear on the piston rod. The unit operates without a magnet (-S omitted); add an -S suffix if you require CMSE reed or DMSE electronic sensors for position feedback.
Quick checklist
- ✓ Force at 0.15–0.8 MPa
- ✓ Coil voltage matches panel
- ✓ Terminal vs grommet entry
- ✓ Retract- or extend-when-energised
- ✓ Load-holding → SAIL / BSAI
Airtac SAIF Series Standard Cylinder with Valve SAIF63X250-08B FAQ
At 0.5 MPa, this 63 mm bore cylinder outputs 1559 N push and 1402 N pull force. The integrated 4M310-08 5/2 valve has a 25.0 mm2 effective area (Cv 1.40) and supports a maximum frequency of 4 cycles per second.
No, it switches itself using the built-in 4M310 valve driven by a DC24V terminal coil. By factory default, the piston rod retracts when the coil is energised, but you can reconfigure it to extend-when-energised by repositioning the valve.
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