The AirTAC SC50 Standard Cylinder SC50X840S is a genuine double-acting standard air cylinder with a Ø50mm bore and 840mm stroke, PT1/4 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
The AirTAC SC50X840S is a double-acting tie-rod cylinder delivering 982 N of push force at 0.5 MPa and up to 1767 N at the maximum operating pressure of 0.9 MPa. With an 840 mm stroke and a 20 mm diameter piston rod, it is well-suited for medium-reach linear tasks in material handling and automation.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to be clamped directly onto the barrel for non-contact position sensing. The body length A is 150 mm, giving a total extended length of approximately 990 mm. It uses a PT1/4 port and features an adjustable air cushion of 21 mm to decelerate the piston smoothly at end of stroke.
| Model | Airtac SC50 Standard Cylinder SC50X840S |
|---|---|
| Series | SC standard tie-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 840 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (approx.) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×840 | 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 840 mm stroke moves parts between distant conveyor stations, and the built-in magnet enables end-of-stroke confirmation with barrel-mounted sensors.
Provides consistent, controlled linear motion for adhesive or sealant dispensing heads over a long work area, with adjustable cushioning for smooth stops.
Delivers 982 N of push force at standard shop air to slide boxes or layers onto a pallet, with sensor feedback ensuring complete extension and retraction.
For applications requiring more force, stepping up to the 63 mm bore SC63 series provides 1559 N of push at 0.5 MPa. If a shorter, more compact cylinder is acceptable, the 40 mm bore offers 628 N. At 840 mm of stroke, the rod is long and unsupported; any side load can cause bending or premature bearing wear, so an external linear guide or a guided cylinder should be used to absorb transverse forces.
To replace an existing cylinder, match five points: 50 mm bore, 840 mm stroke, PT1/4 port thread, the built-in magnet (-S) for sensor compatibility, and the basic (no bracket) mounting. This ensures a direct functional and dimensional replacement for another AirTAC SC50 tie-rod cylinder.
Quick checklist
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the maximum operating pressure of 0.9 MPa, the push force increases to 1767 N. The theoretical maximum force at 1.0 MPa is 200 kgf.
The 20 mm rod on a long stroke is susceptible to bending from side loads. You must guide the load externally with a linear rail or use a guided cylinder. The cylinder itself should only handle axial push/pull forces; never rely on the rod bearing to support transverse loads.
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