Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-30S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 30mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 0–30mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke30 mm
- Adjustable0–30 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-30S
The AirTAC MBLCJ25X30-30S is a compact double-acting aluminum mini cylinder with a single rod and a built-in magnet. It generates 245 N of push force at 0.5 MPa. A rear stopper lets you trim up to 30 mm of travel, creating a usable stroke window of 0-30 mm for exact end-positioning. Unlike the base MBLJ, this model features a screw-tunable adjustable air cushion at both ends to decelerate faster moves and protect the end covers.
The 30 mm adjustment code fully consumes the 30 mm stroke, allowing you to set the extension length anywhere up to the nominal maximum. The rear adjuster acts purely as a mechanical travel stop and does not lock or hold the load in place. Constructed with a riveted rolling-packed barrel and a 20 um hard-chrome plated carbon-steel rod, it operates at speeds between 30-800 mm/s. The -S magnet supports CMSG reed and DMSG or EMSG solid-state sensors for position feedback.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 30 mm |
| Adjustable window | 0–30 mm (trim 30 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 MBLCJ25X30-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×30 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ25X30-30S Is Used
PCB Router Z-Axis Stop
Uses the 0-30 mm adjustable window to precisely set the routing depth on a printed circuit board spindle, relying on the 245 N push force to maintain a firm stop.
Dispenser Nozzle Height Set
Tunes the exact extension length for a fluid dispensing nozzle, using the adjustable air cushion to prevent splashing when retracting at high speed.
Wire Cutter Positioning
Feeds and cuts wire to length, where the built-in magnet triggers a DMSG electronic sensor to confirm the blade position before the 343 N power stroke at 0.7 MPa.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X30-30S the Right Cylinder?
Stepping down from this 25 mm bore to the 20 mm bore drops your push force to 157 N at 0.5 MPa, whereas moving up to the 32 mm bore increases it to 402 N. Choose the MBLCJ over the MBLJ when your application requires tunable end-of-stroke deceleration instead of a fixed rubber bumper, or over the MBLC if you need rear travel adjustment alongside the cushion. Mounting options are Basic, FA flange, or LB foot only; SDB pivot and back-cover attachments are not available.
For replacements, match the 25 mm bore, 30 mm stroke, 30 mm adjust code, G1/8 port, PT thread, and the -S magnet. The overall length equals A + 2 x stroke + adjust. Because the 10 mm rod is relatively slim, if your stroke approaches 300 mm you must use an external guide to prevent rod bending under side loads. The cushion only decelerates the piston; it will not hold position without live air pressure.
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 MBLCJ25X30-30S FAQ
At 0.5 MPa it provides 245 N push and 206 N pull force. At 0.7 MPa the push force is 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa.
The adjustable stroke is a rear mechanical stopper that trims the travel window down to 0-30 mm, setting the exact end position. The adjustable air cushion only tunes the deceleration speed near the covers. Neither holds the load without air pressure.
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Standard models usually ship in 3-4 days.
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