Airtac SCJ50 Standard Cylinder SCJ50X100-75H
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-75H is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø50mm bore, 100mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke100 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X100-75H
The SCJ50X100-75H is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, delivering 982 N of push force at 0.5 MPa. Its rear-cap adjusting screw provides up to 75 mm of stroke-end reduction, allowing precise fine-tuning of the piston stop position without removing the cylinder from the machine. The 20 mm diameter piston rod and PT1/4 ports ensure robust, reliable actuation for mid-range industrial tasks.
This model is equipped with Viton (FKM) seals, extending the operating temperature range to 0–150°C, making it suitable for high-temperature or chemically aggressive environments where standard seals would degrade. The body length A(SCJ) is 194 mm, and the cylinder features an adjustable air cushion for smooth deceleration, protecting end-cap components from impact damage.
Airtac SCJ50 Standard Cylinder SCJ50X100-75H Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-75H |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 75 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 SCJ50X100-75H
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | Nominal (maximum) stroke length in mm. |
| -75 | 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 SCJ50X100-75H Is Used
Commissioning & Setup
Fine-tune the end-stop position during initial machine setup without swapping cylinders or machining custom stops, accelerating system commissioning.
Product Format Changeover
Quickly adjust the stroke to accommodate different product sizes on a packaging or sorting line, minimizing downtime between production runs.
High-Temperature Process Control
The Viton seals allow reliable operation in hot environments like foundries or autoclaves, where the stroke can be adjusted to compensate for thermal expansion of tooling.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-75H the Right Cylinder?
Choose the SCJ50X100-75H when you need a 50 mm bore cylinder with a 100 mm nominal stroke that can be shortened by up to 75 mm on the machine. For applications needing more force, stepping up to a 63 mm bore provides 1559 N of push force at the same pressure. If the stroke adjustment is not required, a fixed-stroke SC50X100 cylinder is a simpler, more cost-effective alternative. For direct replacement, match the bore, 100 mm nominal stroke, 75 mm adjust range, PT port thread, and Viton seal material.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-75)
- ✓ 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 SCJ50X100-75H FAQ
At the standard operating pressure of 0.7 MPa, this cylinder provides 1374 N of push force and 1155 N of pull force. The maximum push force at 1.0 MPa is 200 kgf. Because it is a single-rod cylinder, the push force is greater than the pull force due to the rod area.
This SCJ50X100-75H is a direct replacement for any AirTAC SCJ adjustable-stroke cylinder with a 50 mm bore, 100 mm nominal stroke, and a 75 mm adjustment range. Ensure the port thread (PT), seal material (Viton), and mounting style match your existing setup. It is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profiles.
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