Airtac SCJ50 Standard Cylinder SCJ50X75-75STC
The AirTAC Airtac SCJ50 Standard Cylinder SCJ50X75-75STC 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, 75mm nominal stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ50 mm
- Nominal stroke75 mm
- Stroke adjust-75 mm
- Port sizePT1/4
- Rod threadM16×1.5
- CushionAdjustable, 21 mm
About the Airtac SCJ50 Standard Cylinder SCJ50X75-75STC
The SCJ50X75-75STC is a double-acting, single-rod pneumatic cylinder with a 50 mm bore and a nominal 75 mm stroke, featuring a full 75 mm rear-cap adjusting screw for fine-tuning the stroke end position. This model delivers 982 N of push force at 0.5 MPa and 1767 N at the maximum operating pressure of 0.9 MPa, driven by a 20 mm diameter piston rod with an M16x1.5 thread.
A built-in magnet allows direct mounting of CMSG/DMSG/EMSG sensors for electronic end-of-stroke detection, while the centre trunnion (TC) mounting, supplied with the TCM1 bracket, enables the cylinder to pivot for swinging loads. The body length A(SCJ) is 194 mm, and the adjustable air cushion provides smooth deceleration across the 30-800 mm/s speed range.
Airtac SCJ50 Standard Cylinder SCJ50X75-75STC Technical Specifications
| Model | Airtac SCJ50 Standard Cylinder SCJ50X75-75STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø50 mm |
| Nominal stroke | 75 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 SCJ50X75-75STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×75 | 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 SCJ50X75-75STC Is Used
Format Changeovers
Quickly adjust the end stop for different product sizes on packaging or labelling machines without swapping the cylinder.
Commissioning & Setup
Fine-tune the actuator stroke in the field during machine build and testing, dialing in the exact position with the rear screw.
Wear Compensation
Take up mechanical play or tooling wear over time by slightly extending the effective stroke, maintaining consistent clamping or pressing force.
Is the Airtac SCJ50 Standard Cylinder SCJ50X75-75STC the Right Cylinder?
Choose the SCJ50X75-75STC when you need to dial in the stroke end precisely during commissioning or changeovers, with the full 75 mm adjustment range eliminating the need for external hard stops. For applications requiring more force, stepping up to a 63 mm bore provides 1559 N of push force at 0.5 MPa; if a fixed stroke is sufficient, the standard SC50 series offers a simpler, non-adjustable alternative.
This exact configuration (magnet, TC mount, PT ports) is a direct replacement for another AirTAC SCJ50 cylinder with the same bore, nominal stroke, and 75 mm adjust range. For strokes of 300 mm or more, consider an external guide rail or a guided cylinder to protect the 20 mm rod from bending under side loads.
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 SCJ50X75-75STC FAQ
At 0.5 MPa, the 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 pull force is lower because the 20 mm rod reduces the effective piston area on the retract side.
Yes, if your existing cylinder is an AirTAC SCJ50 with a 75 mm nominal stroke, a 75 mm adjust range, a centre trunnion (TC) mount, and a magnet sensor option. Ensure the port thread (PT) matches your existing fittings.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCJ Adjustable-Stroke Cylinders
Request a Quote for Airtac SCJ50 Standard Cylinder SCJ50X75-75STC
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.