The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X50-50TC 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, 50mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X50-50TC is an 80mm bore double-acting single-rod cylinder featuring a rear-cap adjusting screw that provides a 50mm field-adjustable stroke-end range. This allows fine-tuning of the piston stop position without removing the cylinder, ideal for commissioning and format changeovers. With a 25mm rod diameter and PT3/8 ports, it delivers a substantial 2513 N push force at 0.5 MPa.
Equipped with a TC centre trunnion mount, this model is designed for applications where the cylinder body needs to pivot during operation, supplied complete with the TCM1 trunnion bracket. The body length A is 239 mm, and the 28 mm air cushion at each end ensures smooth deceleration. This genuine AirTAC SCJ cylinder is built for reliable, repeatable performance in demanding pneumatic systems.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X50-50TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 50 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. |
| ×50 | 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.
The 50mm stroke-end adjustment allows operators to quickly reset the stop position for different product sizes on a packaging line, minimizing downtime between batches.
Fine-tune the final clamp position to accommodate varying workpiece thicknesses in a pressing or assembly fixture, ensuring consistent pressure without over-travel.
The TC centre trunnion mount allows the cylinder to swing, making it perfect for conveyor diverter gates where the stroke end is adjusted to align with different lane positions.
Select the SCJ80X50-50TC when you need to precisely set the end-of-stroke position within a 50mm window on a pivoting assembly. If your force requirement is lower, stepping down to the 63mm bore reduces push force to 1559 N at 0.5 MPa. For higher force, the 100mm bore provides 3927 N. Choose a fixed-stroke SC series cylinder if stroke adjustment is not required. For a direct replacement, match the 80mm bore, 50mm nominal stroke, 50mm adjust range, PT3/8 port, and TC centre trunnion mounting.
Adjustable-stroke checklist
At 0.5 MPa operating pressure, the push force is 2513 N and the pull force is 2268 N. The maximum push force at the 0.9 MPa operating limit is 4523 N. The pull force is lower due to the area of the 25mm piston rod.
A screw mechanism in the rear cap limits the piston's return stroke end. You can shorten the effective stroke by up to 50mm from the nominal 50mm maximum. It is a mechanical stop adjustment, not a force or speed control.
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