Airtac SCJ80 Standard Cylinder SCJ80X100-20S
The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X100-20S 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. Ø80mm bore, 100mm nominal stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Nominal stroke100 mm
- Stroke adjust-20 mm
- Port sizePT3/8
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SCJ80 Standard Cylinder SCJ80X100-20S
The SCJ80X100-20S is an 80 mm bore double-acting single-rod cylinder that lets you fine-tune the stroke end position by up to 20 mm via a rear-cap adjusting screw, without swapping the unit. It delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, driven by a 25 mm diameter piston rod and fed through PT3/8 ports.
A built-in magnet (the -S suffix) allows CMSG/DMSG/EMSG reed or solid-state sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The cylinder body length A(SCJ) is 239 mm, and the adjustable air cushion decelerates the piston smoothly at both ends. This model is a genuine AirTAC component, ready for commissioning trials and format changeovers where stroke flexibility matters.
Airtac SCJ80 Standard Cylinder SCJ80X100-20S Technical Specifications
| Model | Airtac SCJ80 Standard Cylinder SCJ80X100-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 100 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| 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, 28 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 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 SCJ80 Standard Cylinder SCJ80X100-20S
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×100 | 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 SCJ80 Standard Cylinder SCJ80X100-20S Is Used
Commissioning & Setup
Engineers can micro-adjust the stroke end by up to 20 mm during machine commissioning to perfectly synchronize the cylinder's stop position with mating tooling, eliminating the need for shims or custom spacers.
Product Changeover
On packaging or assembly lines, the adjustable stroke allows operators to quickly reset the push or stop position for different product sizes without replacing the cylinder, slashing downtime between batches.
Wear Compensation
In clamping or pressing fixtures, the rear screw can be advanced over time to take up mechanical wear in the linkage or tooling, maintaining consistent clamp force and part quality without a full cylinder swap.
Is the Airtac SCJ80 Standard Cylinder SCJ80X100-20S the Right Cylinder?
Choose the SCJ80X100-20S when your application needs a nominal 100 mm stroke with the ability to dial it back by up to 20 mm for precise end-stop positioning. If you need more force, stepping up to the 100 mm bore provides 3927 N of push force at the same 0.5 MPa; for a lighter, more compact solution, the 63 mm bore offers 1559 N. This cylinder is ideal for field adjustments, but if your stroke is fixed and never needs tuning, the standard SC80X100 fixed-stroke cylinder is a simpler, cost-effective alternative.
For a direct replacement, match an AirTAC SCJ80X100-20S with the same bore, 100 mm nominal stroke, 20 mm adjust range, PT port thread, basic mounting, and integrated magnet. At this 100 mm stroke, rod bending from side loads is generally not a concern, but always align the load axially or use an external guide for long-term seal life.
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 SCJ80 Standard Cylinder SCJ80X100-20S FAQ
At the standard 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. The push force is higher because the single rod reduces the effective piston area on the return stroke. At the maximum operating pressure of 1.0 MPa, the theoretical push force reaches 5026 N.
Yes, if you need field-adjustable stroke capability. The SCJ80X100-20S is a direct dimensional replacement for another AirTAC SCJ80X100-20S. It is not a drop-in for a fixed-stroke SC cylinder because the rear adjusting screw adds to the overall body length (239 mm for the SCJ body). You must also ensure your mounting and porting (PT3/8) match.
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 SCJ80 Standard Cylinder SCJ80X100-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.