Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 100mm nominal stroke and a rear adjustable-stroke stopper — trim up to 20mm for a usable window of 80–100mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke100 mm
- Adjustable80–100 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S
The AirTAC MBLCJ25X100-20S is a compact double-acting mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. It delivers 245 N push and 206 N pull force at 0.5 MPa. The rear stopper allows you to trim up to 20 mm of travel, creating an exact 80-100 mm usable stroke window for precise end-positioning.
Unlike the fixed rubber bumper on an MBLJ, the screw-tunable cushioning here decelerates heavier loads at stroke ends, protecting the end covers. The riveted aluminum barrel keeps the body light for tight spaces, while the Ø10 mm carbon-steel rod features 20 µm hard-chrome plating to resist wear. The built-in -S magnet enables position detection via CMSG reed or DMSG/EMSG electronic switches.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 100 mm |
| Adjustable window | 80–100 mm (trim 20 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 air cushion (both ends) |
| Max standard stroke | Up to 300 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | — |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×100 | Nominal stroke length in mm. |
| -20 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S Is Used
PCB Edge Connector Seating
Uses the 80-100 mm adjustable stroke window to drive a 245 N push, seating fragile PCB edge connectors accurately while the air cushion prevents impact damage on the test jig.
Small Pump Valve Tunning
Tunes the end-of-stroke deceleration for a fluid dispensing pump valve actuator, using the 0.5 MPa force to open the valve while avoiding hydraulic shock at the 100 mm stroke end.
Light Sheet Metal Bending
Executes a 206 N pull stroke on a small sheet metal brake, using the built-in magnet to confirm retraction and the adjustable stop to dial in the exact 80 mm bend depth.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S the Right Cylinder?
Choose this 25 mm bore if your application needs 245 N push at 0.5 MPa with controlled end-of-stroke deceleration. If you require less force, step down to the 20 mm bore (157 N push); for heavier loads, step up to the 32 mm bore (402 N push). Select this MBLCJ over an MBLJ when fixed bumpers cannot absorb the kinetic energy of your 100 mm stroke moves, or over an MBLC when you need that 80-100 mm rear travel trim.
Remember the rear adjuster is a travel stop, not a load-holding lock; the rod drifts without live air pressure. Mounting is limited to Basic, FA flange, or LB foot options, with no SDB pivot or back-cover configurations available. For a direct replacement, match the 25 mm bore, 100 mm stroke, 20 mm adjust code, G1/8 port, PT thread, and the -S magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
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 stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X100-20S FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N push and 206 N pull force. At 0.7 MPa, the push force increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
The rear stroke adjuster is a mechanical travel stop that trims the stroke window down to 80-100 mm, but it does not lock or hold the load in place. The adjustable air cushion is a separate screw-tunable valve that regulates end-of-stroke deceleration to protect the end covers from impact.
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Standard models usually ship in 3-4 days.
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