The AirTAC Airtac SC40 Standard Cylinder SC40X670STC is a genuine double-acting standard air cylinder with a Ø40mm bore and 670mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The SC40X670STC is a double-acting pneumatic cylinder delivering 628 N of push force at 0.5 MPa (1130 N at 0.9 MPa). Its 40 mm bore and 670 mm stroke suit mid-range linear tasks where a compact tie-rod body is preferred. The built-in magnet allows easy barrel mounting of CMSG/DMSG/EMSG sensors for end-of-stroke detection.
This configuration includes a centre trunnion (TC) mount, supplied with the TCM1 bracket (F-SC40TC), letting the cylinder pivot during operation to follow an arc path. The 16 mm diameter piston rod and 21 mm adjustable air cushion at each end provide smooth deceleration. The body length A is 142 mm, making the total extended length approximately 812 mm.
| Model | Airtac SC40 Standard Cylinder SC40X670STC |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 670 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. |
| ×670 | 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 670 mm stroke and pivoting trunnion mount allow the cylinder to swing a diverter gate on a conveyor line, routing packages or products between lanes.
Delivers 628 N at 0.5 MPa for secure workpiece clamping on jigs. The magnetic piston enables sensor confirmation of clamp engagement before a machining cycle starts.
Operates a discharge door on a hopper or chute. The centre trunnion allows the cylinder body to pivot as the door opens, and the long stroke provides a wide opening gap.
For a step up in force, the 50 mm bore SC50 series provides 982 N at 0.5 MPa. If a shorter, lighter cylinder is acceptable, the 32 mm bore offers 402 N. With a 670 mm stroke, ensure the rod is not subjected to side loads; an external linear guide or guided cylinder is recommended to prevent rod bending and premature bearing wear. To replace this model, match the 40 mm bore, 670 mm stroke, PT port thread, centre trunnion mount, and the -S magnet option.
Quick checklist
At 0.7 MPa operating pressure, the theoretical push force is 879 N. The pull force on the retract stroke is lower due to the 16 mm rod area, delivering 528 N at 0.5 MPa.
No. As a standard double-acting cylinder, it does not lock or hold position when air pressure is removed or the valve is centered. The piston will drift. For position holding, add an external rod brake or a pilot-operated check valve.
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