The AirTAC Airtac SC40 Standard Cylinder SC40X645S is a genuine double-acting standard air cylinder with a Ø40mm bore and 645mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC40X645S is a double-acting single-rod pneumatic cylinder with a 40 mm bore and a 645 mm non-standard stroke, built with the -S magnet option so reed or solid-state sensors (CMSG/DMSG/EMSG series) clamp directly onto the tie-rod barrel for end-of-stroke detection. At 0.5 MPa it pushes with 628 N and pulls 528 N; at the maximum operating pressure of 0.9 MPa the thrust rises to 1130 N, giving it a solid force reserve for medium-automation tasks.
This cylinder uses a 16 mm diameter piston rod with an M12x1.25 rod-end thread and PT1/4 pneumatic ports. The adjustable air cushion at each end (21 mm cushion length) decelerates the piston smoothly, while the tie-rod construction keeps the body length A at a compact 142 mm. Because the 645 mm stroke exceeds the 1200 mm maximum standard stroke for bore 40, this unit is a made-to-order configuration—confirm lead time when ordering.
| Model | Airtac SC40 Standard Cylinder SC40X645S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 645 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (approx.) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SC | Standard tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×645 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 645 mm stroke and built-in magnet suit long-reach diverter gates on conveyor lines. CMSG sensors confirm open/closed position, while the 628 N push force at 0.5 MPa handles medium-weight product deflection reliably.
Ideal for pushing components along a 645 mm transfer rail in assembly cells. The adjustable cushion protects the 16 mm rod and end caps from impact at higher speeds, and the -S magnet enables precise mid-stroke or end-stroke sensing.
Used on lift-assist arms or part-presentation trays where a 645 mm reach is needed. The tie-rod design allows easy sensor repositioning along the barrel, and the 1130 N thrust at 0.9 MPa provides ample force for lifting or sliding fixtures.
Choose the SC40 when the force requirement sits between the smaller SC32 (402 N push at 0.5 MPa) and the larger SC50 (982 N push). If your application needs more force, stepping up to the 50 mm bore adds roughly 56 % more push at the same pressure. For a 645 mm stroke with a 16 mm rod, side-load and rod-bearing bending must be managed: if the load is not guided externally, consider adding a linear guide or switching to a guided-cylinder assembly to prevent premature rod-bearing wear.
To replace an existing cylinder, match five points: bore (40 mm), stroke (645 mm), port thread (PT1/4), mounting accessory (basic—no bracket supplied), and the built-in magnet (-S suffix). Confirm that the tie-rod body length A (142 mm) fits your machine envelope, as the SC series is shorter than an ISO 15552 profile cylinder.
Quick checklist
At 0.5 MPa the cylinder pushes with 628 N and pulls with 528 N. At 0.7 MPa the push force is 879 N, and at the maximum operating pressure of 0.9 MPa it reaches 1130 N. The theoretical maximum at 1.0 MPa (never exceed) is 128 kgf. Always size for your lowest expected working pressure.
No. The AirTAC SC series is a tie-rod cylinder and is physically shorter than an ISO 15552 profile cylinder of the same bore and stroke, so the mounting dimensions and overall length differ. It is a direct replacement only for another AirTAC SC40 tie-rod cylinder matching the same bore, stroke, PT1/4 ports, basic mounting, and -S magnet option.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.