Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75S is a genuine double-acting aluminum-barrel mini cylinder with a Ø25mm bore, a 250mm nominal stroke and a rear adjustable-stroke stopper — trim up to 75mm for a usable window of 175–250mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke250 mm
- Adjustable175–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75S
The AirTAC MBLCJ25X250-75S is a compact double-acting mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. A 25mm bore yields 245N push and 206N pull force at 0.5MPa. The 75mm rear adjuster creates a usable 175-250mm travel window, letting you dial in the exact extended position for a 250mm nominal stroke.
Unlike the base MBLJ with its fixed rubber bumper, this SKU uses screw-tunable pneumatic cushioning to decelerate the rod smoothly near stroke ends, protecting the end covers during faster cycles. The riveted aluminum barrel keeps the body light for tight spaces, while the Ø10mm hard-chrome plated carbon-steel rod resists corrosion. An embedded magnet enables position detection, and the overall length equals A plus 500mm plus the 75mm adjuster.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 175–250 mm (trim 75 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 MBLCJ25X250-75S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×250 | Nominal stroke length in mm. |
| -75 | 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 MBLCJ25X250-75S Is Used
PCB Router Z-Axis
Trims the 250mm travel down to a 175mm window for spindle depth stops on a PCB routing machine, using the cushion to soften the 245N arrival at the lower deck.
Textile Fabric Stretching
Applies 206N pull force to tension fabric webs on automated looms, relying on the tunable cushion to prevent sudden snatching at the end of the retraction cycle.
Bottle Capping Head
Uses the built-in magnet with a DMSG electronic switch to verify cap seating position, while the rear adjuster fine-tunes the 175-250mm reach for varied bottle heights.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-75S the Right Cylinder?
If 245N push at 0.5MPa is insufficient, step up to the 32mm bore delivering 402N; if you need less force, step down to the 20mm bore providing 157N. Choose this MBLCJ over the MBLJ when your cycle speeds require active deceleration rather than a fixed bumper, or over the MBLC if you need to trim the end position rather than using a fixed stroke.
The 75mm rear adjuster sets the travel endpoint but is a mechanical stop, not a load-holding lock; the air cushion only decelerates. Neither will hold position without live air pressure. Mounting is limited to Basic, FA flange, or LB foot options (no SDB pivot or back-cover code exists). For exact replacements, match the 25mm bore, 250mm stroke, 75mm adjust code, G1/8 PT port thread, and the -S magnet. Because the 250mm stroke approaches the 300mm maximum for this bore, use an external guide 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 MBLCJ25X250-75S FAQ
At 0.5MPa the cylinder provides 245N push and 206N pull force. At 0.7MPa the push increases to 343N. The maximum theoretical force is 50kgf at 1.0MPa operating pressure.
The 75mm rear stroke adjuster mechanically limits travel, creating a usable 175-250mm window, but it acts only as a stop and does not lock the load. The adjustable air cushion independently tunes pneumatic deceleration near the stroke ends to absorb kinetic energy, which also does not hold the load in place.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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