Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-100
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-100 is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 125mm nominal stroke and a rear adjustable-stroke stopper — trim up to 100mm for a usable window of 25–125mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke125 mm
- Adjustable25–125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-100
The AirTAC MBLCJ25X125-100 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. It delivers 245 N of push force and 206 N of pull force at 0.5 MPa. The 100 mm adjustment code allows you to trim the rear travel, creating a usable stroke window of 25 to 125 mm. This wide variability makes it highly effective for sequencing tasks where multiple end positions are required without swapping the entire actuator.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable end-of-stroke cushioning to decelerate heavier or faster moving loads, protecting the end covers from impact shock. The 10 mm carbon-steel rod is plated with 20 um of hard chrome to resist wear and scoring against the grease-retaining piston seal. Because this specific SKU lacks the -S magnet code, it cannot accommodate an AirTAC CMSG, DMSG, or EMSG position sensor. The riveted rolling-packed aluminum barrel keeps the body light for tight mounting spaces.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-100 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-100 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 25–125 mm (trim 100 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 MBLCJ25X125-100
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -100 | 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 MBLCJ25X125-100 Is Used
PCB Router Z-Axis
Drives a light spindle gantry up and down. The 245 N push force handles the carriage weight, while the 25-125 mm adjustable window allows precise depth setting for different copper layer thicknesses.
Dispensing Valve Dosing
Actuates a precision needle valve for epoxy application. The rear stopper trims the exact open height, and the tunable air cushion prevents fluid splashing by softening the fast 125 mm extension stop.
Textile Loom Tensioner
Positions a yarn guide bar across a weaving machine. The 206 N pull force maintains consistent thread tension, and the riveted aluminum body resists lint infiltration in compact machine frames.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X125-100 the Right Cylinder?
Select this 25 mm bore when your application demands 245 N of push force at 0.5 MPa. If your payload is lighter, stepping down to the 20 mm bore yields 157 N of push force, whereas upgrading to the 32 mm bore provides 402 N for heavier resistance. Compared to the MBLJ which uses a fixed bumper, the MBLCJ is preferred when cycle speeds demand tunable deceleration. Against the MBLC, this model adds the 100 mm rear travel stopper for on-the-fly end-position trimming.
Remember that the rear adjuster is a travel stop, not a mechanical lock, and the air cushion only decelerates; neither will hold a load in place without live air pressure. Mounting is limited to Basic, FA flange, or LB foot brackets, as there is no back-cover or SDB pivot option for this series. For an exact replacement, match the 25 mm bore, 125 mm stroke, 100 mm adjust code, G1/8 port, PT thread form, and confirm no magnet is required. With a 125 mm stroke on a 10 mm rod, ensure external guidance to prevent rod bending under side loads.
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 MBLCJ25X125-100 FAQ
At 0.5 MPa, this 25 mm bore cylinder delivers 245 N of push force and 206 N of pull force. At 0.7 MPa, the push force increases to 343 N, with a theoretical maximum of 50 kgf at 1.0 MPa. The 100 mm adjustment code allows you to trim the 125 mm nominal stroke, creating a usable travel window of 25 to 125 mm.
This specific SKU lacks the -S code, so it has no built-in magnet and cannot accept CMSG, DMSG, or EMSG electronic switches. Additionally, the adjustable air cushion only regulates end-of-stroke deceleration and the rear adjuster acts as a travel stop; neither component is a brake or lock, so the rod will drift if air pressure is removed.
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