Airtac SCJ100 Standard Cylinder SCJ100X270-20S
The AirTAC Airtac SCJ100 Standard Cylinder SCJ100X270-20S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø100mm bore, 270mm nominal stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Nominal stroke270 mm
- Stroke adjust-20 mm
- Port sizePT1/2
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SCJ100 Standard Cylinder SCJ100X270-20S
The SCJ100X270-20S is a double-acting, single-rod pneumatic cylinder that puts fine stroke-end adjustment directly on the machine. Its rear-cap screw lets you dial the stroke back by up to 20 mm without removing the cylinder, making it a practical choice for commissioning trials and format changeovers. With a 100 mm bore, this unit delivers 3927 N of push force at 0.5 MPa and 7068 N at 0.9 MPa, driven by a 25 mm diameter piston rod.
This model includes a built-in magnet, so reed or solid-state sensors like CMSG/DMSG/EMSG clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing. The body length A(SCJ) is 245 mm, and the adjustable air cushion helps manage kinetic energy across the 30-800 mm/s speed range. It uses a PT1/2 port and an M20x1.5 rod thread.
Airtac SCJ100 Standard Cylinder SCJ100X270-20S Technical Specifications
| Model | Airtac SCJ100 Standard Cylinder SCJ100X270-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø100 mm |
| Nominal stroke | 270 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/2 |
| 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, 29 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.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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 SCJ100 Standard Cylinder SCJ100X270-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×270 | Nominal (maximum) stroke length in mm. |
| -20 | 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 SCJ100 Standard Cylinder SCJ100X270-20S Is Used
Commissioning Fine-Tuning
Dial in the exact stroke end position during machine setup without swapping cylinders or machining external stops.
Format Changeovers
Quickly adjust the end stop for different product sizes on packaging or material-handling lines, reducing downtime between batches.
Wear Compensation
Take up mechanical play or seal wear over time by slightly shortening the stroke, maintaining consistent clamping or pressing force.
Is the Airtac SCJ100 Standard Cylinder SCJ100X270-20S the Right Cylinder?
Step up to the SCJ125 if your application outgrows the 3927 N push at 0.5 MPa, as the 125 mm bore provides 6136 N. For a fixed-stroke alternative without the adjusting screw, the standard SC100 series is a direct dimensional match. When replacing an existing SCJ100X270-20S, match the bore, 270 mm nominal stroke, 20 mm adjust range, PT thread, and the magnet option; the basic mount configuration uses no additional bracket. For strokes of 270 mm, ensure the rod is guided externally if side loads are present to prevent bending.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-20)
- ✓ 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 SCJ100 Standard Cylinder SCJ100X270-20S FAQ
A rear-cap screw sets the stroke end position within a 20 mm range. The nominal 270 mm stroke is the maximum; you can shorten it in the field without altering the cylinder's bore or force output.
At 0.5 MPa, it generates 3927 N pushing and 3681 N pulling. The push force is higher because the single rod reduces the piston area on the return side.
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 SCJ100 Standard Cylinder SCJ100X270-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.