The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-50TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø80mm bore, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X100-50TC is a double-acting, single-rod pneumatic cylinder from AirTAC's adjustable-stroke family, offering a 100 mm nominal stroke that can be precisely shortened by up to 50 mm via a rear-cap adjusting screw. This 80 mm bore unit delivers a substantial 2513 N of push force at 0.5 MPa, making it a powerful choice for applications requiring on-machine fine-tuning of the stroke end position without swapping the cylinder.
Equipped with a centre trunnion (TC) mount, this model is designed to pivot during operation, absorbing side loads in swinging applications. The cylinder uses a 25 mm diameter rod with an M20x1.5 thread, PT3/8 ports, and an adjustable air cushion (28 mm long) for smooth deceleration. Its body length is 239 mm, and it operates reliably within a 30-800 mm/s speed range.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-50TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 50 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -50 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Quickly adjust the end stop for different product sizes on a packaging machine by turning the rear screw, eliminating the need for mechanical stops and reducing downtime between batches.
The TC centre trunnion mount allows the cylinder to pivot, making it ideal for actuating diverter gates on conveyors where the final closed position must be finely tuned to prevent jams.
In high-cycle clamping or pressing fixtures, use the 50 mm adjustment to take up slack from tooling or pad wear over time, maintaining consistent clamping force without reprogramming a controller.
Select the SCJ80X100-50TC when you need to dial in the exact end-of-stroke position on a machine, such as during commissioning or format changeovers, with the 50 mm adjustment range providing ample flexibility. If your force requirements change, stepping up to a 100 mm bore provides 3927 N of push force at 0.5 MPa, while stepping down to a 63 mm bore offers 1559 N. For applications where the stroke is fixed and never needs field adjustment, the standard SC80X100 fixed-stroke cylinder is a more economical choice. This model is a direct replacement for another AirTAC SCJ80 cylinder with a 100 mm nominal stroke, a 50 mm adjust range, PT3/8 ports, and a TC centre trunnion mount (F-SC80TC bracket).
Adjustable-stroke checklist
At 0.5 MPa, the push force is 2513 N and the pull force is 2268 N. The push force is higher because the single rod reduces the piston area on the pull side. The maximum push force at 0.9 MPa is 4523 N.
No, a standard pneumatic cylinder will not hold a load if air pressure is lost or the valve is centered. The adjustable screw only sets the stroke end, not a mid-stroke stop. For position holding, you must add an external rod lock or a pilot-operated check valve.
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