Airtac SCJ50 Standard Cylinder SCJ50X80-30TC
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X80-30TC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø50mm bore, 80mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke80 mm
- Stroke adjust-30 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X80-30TC
The SCJ50X80-30TC is a double-acting, single-rod adjustable-stroke cylinder from AirTAC, designed for applications where the stroke end position must be fine-tuned on the machine. Its rear-cap adjusting screw provides a 30 mm range to shorten the 80 mm nominal stroke, allowing operators to dial in the exact stopping point without swapping the cylinder or adding external hard stops.
This 50 mm bore model delivers 1374 N of push force at 0.7 MPa and features a 20 mm diameter piston rod with M16x1.5 threads. The TC suffix denotes a centre trunnion mount, supplied with the TCM1 bracket (order as F-SC50TC), making it ideal for pivoting applications. The body length A(SCJ) is 194 mm, slightly longer than the fixed-stroke SC version to accommodate the adjusting mechanism.
Airtac SCJ50 Standard Cylinder SCJ50X80-30TC Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X80-30TC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 80 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| 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 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.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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.
Model Code: Airtac SCJ50 Standard Cylinder SCJ50X80-30TC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×80 | Nominal (maximum) stroke length in mm. |
| -30 | 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.
Where the Airtac SCJ50 Standard Cylinder SCJ50X80-30TC Is Used
Format Changeovers
The 30 mm adjustment screw allows operators to quickly reset the stroke end for different product sizes on a packaging line, reducing downtime between batches.
Clamping & Pressing
Fine-tune the final clamp position to accommodate varying workpiece thicknesses or tooling wear, ensuring consistent pressure without over-travel.
Pivoting Stops & Gates
With the TC centre trunnion mount, this cylinder is perfect for actuating swinging gates or part stops where the stroke end needs periodic adjustment.
Is the Airtac SCJ50 Standard Cylinder SCJ50X80-30TC the Right Cylinder?
Choose the SCJ50X80-30TC when you need a 50 mm bore cylinder with a centre-pivot mount and the ability to tweak the stroke end by up to 30 mm during commissioning or changeovers. If your force requirement is lower, the 40 mm bore SCJ40 series provides 879 N of push at 0.7 MPa. For higher forces without adjustability, a fixed-stroke SC50 cylinder may be a simpler alternative. As a direct replacement, match the bore (50 mm), nominal stroke (80 mm), adjust range (30 mm), PT port thread, and TC centre-trunnion mounting. This model does not include a magnet; if you need sensor feedback, specify the -S suffix.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ50 Standard Cylinder SCJ50X80-30TC FAQ
Being a single-rod cylinder, push and pull forces differ. At 0.5 MPa, it provides 982 N pushing and 825 N pulling. The maximum push force at the 0.9 MPa operating limit is 1767 N.
The -TC suffix specifically orders the centre trunnion mount with the TCM1 bracket. If your application requires a front flange, you would order the FA mounting type (e.g., SCJ50X80-30FA). The SCJ series does not support FB rear flanges or CA/CB clevis mounts.
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