Airtac SCJ50 Standard Cylinder SCJ50X100-75
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X100-75 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 SCJ50X100-75
The SCJ50X100-75 is a double-acting, single-rod pneumatic cylinder with a 50 mm bore and a 100 mm nominal stroke, featuring a rear-cap adjusting screw that provides a 75 mm field-adjustable stroke range. This allows you to fine-tune the stroke end position on the machine without swapping the cylinder, ideal for commissioning and format changeovers. It delivers a robust 982 N of push force and 825 N of pull force at 0.5 MPa, using a 20 mm diameter piston rod for reliable linear motion.
Built on a durable tie-rod body design with a length of 194 mm, this cylinder includes an adjustable air cushion for smooth deceleration and operates within a standard pressure range of 0.15 to 1.0 MPa. The PT1/4 port and M16x1.5 rod thread ensure straightforward integration into existing pneumatic circuits. This basic configuration comes with a TPU seal and PT threads, ready for standard industrial environments.
Airtac SCJ50 Standard Cylinder SCJ50X100-75 Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X100-75 |
|---|---|
| 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 SCJ50X100-75
| 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 SCJ50X100-75 Is Used
Commissioning & Setup
Fine-tune the 75 mm adjustable stroke end-stop during machine commissioning to precisely align actuators with tooling or stops, eliminating the need for shims or custom mechanical spacers.
Product Format Changeover
Quickly adjust the cylinder's stroke for different product sizes on a packaging or sorting line. The 100 mm nominal stroke with a 75 mm adjustment range handles significant format variations without cylinder changes.
Wear Compensation
In clamping or pressing fixtures, use the rear adjusting screw to take up mechanical wear on pads or tooling over time, maintaining consistent clamping force and position without reprogramming.
Is the Airtac SCJ50 Standard Cylinder SCJ50X100-75 the Right Cylinder?
This 50 mm bore model is a strong mid-range actuator, providing 982 N of push force at 0.5 MPa. If your application requires more force, stepping up to a 63 mm bore (SCJ63) increases push force to 1559 N. For lighter, more compact tasks, a 40 mm bore (SCJ40) offers 628 N. The 75 mm adjustable stroke is perfect for processes where the exact end position needs to be dialed in during setup. If your application has a fixed, unchanging stroke, a standard SC50 fixed-stroke cylinder is a more economical choice. For a direct replacement, match an SCJ50X100-75 with the same 50 mm bore, 100 mm nominal stroke, 75 mm adjust range, PT ports, and basic mounting.
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 SCJ50X100-75 FAQ
At the standard 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. The maximum push force at 0.9 MPa is 1767 N. The adjustable stroke screw does not change the cylinder's force output.
A screw on the rear cap sets the stroke end position, allowing you to shorten the effective stroke by up to 75 mm from the 100 mm nominal maximum. It is a mechanical stop for the piston, not a speed or pressure regulator, and it does not lock the piston rod in place when air pressure is removed.
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