Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 300mm nominal stroke and a rear adjustable-stroke stopper — trim up to 100mm for a usable window of 200–300mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke300 mm
- Adjustable200–300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100S
The AirTAC MBLCJ25X300-100S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 245 N of push force and 206 N of pull force at 0.5 MPa. The rear stopper allows you to trim up to 100 mm of travel, creating a usable 200-300 mm stroke window for precise end-position tuning. The integrated -S magnet enables position detection via CMSG, DMSG, or EMSG sensor switches.
Unlike the fixed rubber bumper found on the base MBLJ, the screw-tunable air cushion on this SKU decelerates the rod near the stroke ends to absorb kinetic energy from fast, long-travel moves. The riveted rolling-packed aluminum barrel and 20 um hard-chrome plated carbon-steel rod provide durability, while the heterogeneous two-way grease-retaining piston seal maintains lubrication. Keep in mind the rear adjuster is a travel stop, not a load lock; the cushion only decelerates, so an external guide is strongly recommended for this 300 mm stroke to prevent rod bending.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 200–300 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 MBLCJ25X300-100S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MBLCJ25X300-100S Is Used
Textile Loom Weft Feeder
Drives a 200-300 mm yarn guide carriage. The adjustable air cushion protects the end covers from impact during high-speed 800 mm/s weaving cycles, while the magnet confirms thread delivery position.
PCB Depaneling Saw Gate
Actuates a 250 mm saw guard gate. The 245 N push force at 0.5 MPa securely moves the guard, and the 100 mm rear stroke trimmer sets the exact open width without swapping the cylinder body.
Carton Flap Tucker
Tucks corrugated flaps on a packaging line. The 206 N pull force retracts the tucker blade, and the screw-tunable cushion decelerates the 300 mm stroke to prevent smashing the cardboard.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-100S the Right Cylinder?
Step down to a 20 mm bore if your application requires less force (157 N push at 0.5 MPa), or step up to a 32 mm bore if you need greater thrust (402 N push at 0.5 MPa). Choose this MBLCJ over the MBLJ when your cycle speed demands tunable end-cover protection rather than a fixed bumper, or over the MBLC when you need the 100 mm rear stroke adjustment window rather than a fixed total travel length. Remember that neither the rear adjuster nor the air cushion acts as a lock; the rod will drift without live air pressure, so use an external holding device for mid-stroke positioning.
Mounting is limited to Basic, FA (flange), or LB (foot) options; this series does not offer an SDB pivot or back-cover mount. The overall length equals A + 2 x stroke + adjust, resulting in a longer body than a standard cylinder. To match this exact replacement part, confirm: 25 mm bore, 300 mm stroke, 100 mm adjust code, PT (tapered) thread, G1/8 port, and the -S built-in 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 MBLCJ25X300-100S FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N push force 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, with a proof pressure of 1.5 MPa.
The rear adjuster physically stops the piston, trimming travel within a 200-300 mm window; it does not lock the load. The adjustable air cushion only decelerates the rod near the stroke ends to prevent end-cover damage. The -S magnet works with AirTAC CMSG (reed), DMSG, and EMSG (electronic) switches.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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