The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X50-40TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 50mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X50-40TC delivers 2513 N of push force at 0.5 MPa, with a 40 mm rear-screw adjustment range for fine-tuning the stroke end on the fly. Its 25 mm rod and 28 mm air cushion handle deceleration smoothly, making commissioning and format changes quick without swapping the cylinder.
This model comes with a TC centre trunnion mount for pivoting applications, using the F-SC80TC bracket. The PT3/8 ports and TPU seals suit standard -20 to +70 °C operation, with a body length of 239 mm.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X50-40TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 50 mm |
| Stroke adjustment | Up to 40 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. |
| ×50 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Dial in a new end-stop position in seconds when switching product sizes on a packaging or assembly line, without mechanical stop adjustments.
Fine-tune the actuator stroke during machine bring-up to match the exact tooling position, then lock it in for production.
Take up mechanical play or tooling wear over time by advancing the stroke end, maintaining consistent clamping or pressing force.
For higher force, the SCJ100 bore steps up to 3927 N push at 0.5 MPa. If a fixed stroke is acceptable, the SC80X50 eliminates the adjuster for a simpler setup. This SCJ matches any 80 mm bore, 50 mm stroke, 40 mm adjust range, PT-threaded cylinder needing a centre trunnion mount. At this stroke, rod bending is minimal, but an external guide is recommended for offset loads.
Adjustable-stroke checklist
At 0.5 MPa, it provides 2513 N pushing and 2268 N pulling. The single-rod design means push force is higher due to the full piston area.
A rear-cap screw lets you shorten the stroke end by up to 40 mm. It sets the stop position; it does not change the cylinder's force or speed.
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