Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30 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 30mm for a usable window of 270–300mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke300 mm
- Adjustable270–300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30
The AirTAC MBLCJ25X300-30 is a compact double-acting mini cylinder featuring a rear travel adjuster and tunable air cushions at both ends. It delivers 245 N push and 206 N pull at 0.5 MPa. The 30 mm adjustment code lets you trim the rear stroke, creating a usable end-position window of 270 to 300 mm. This is ideal for refining timing on long-travel assemblies.
Unlike the fixed rubber bumper found on the base MBLJ, this model uses screw-tunable end-of-stroke cushioning to decelerate heavier loads smoothly. The 10 mm carbon-steel rod features 20 µm hard-chrome plating to resist scuffing, while the riveted aluminum barrel keeps the body compact. Note that this SKU lacks a built-in magnet, so it cannot accept CMSG or DMSG position sensors. The rear stopper sets travel length but does not lock the load; external guides are recommended at this 300 mm stroke to prevent rod bending.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 270–300 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 MBLCJ25X300-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MBLCJ25X300-30 Is Used
Loom Takedown Arms
Drives the takedown mechanism on textile looms, using the 270-300 mm adjustable window to dial in exact fabric folding positions while the air cushion absorbs the rapid 245 N return impact.
Label Dispenser Stroke
Trims the peel plate travel on continuous label applicators; the 30 mm rear stopper fine-tunes the web path without adding complex mechanical hard-stops.
PCB Conveyor Gates
Actuates pop-up transfer gates in SMT lines, relying on the tunable end cushions to softly catch the 300 mm swing without shocking the lightweight aluminum framework.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30 the Right Cylinder?
At 245 N push (0.5 MPa), stepping down to the 20 mm bore drops output to 157 N, while moving up to the 32 mm bore increases force to 402 N. Choose this MBLCJ over the MBLJ when your moving mass requires tunable deceleration rather than a simple bumper impact, or over the MBLC when you need that 270-300 mm adjustable end-position window rather than a fixed stroke. The rear adjuster is strictly a travel stop, not a lock, and the cushion only decelerates—neither holds position without live air. Mounting is limited to Basic, FA, or LB styles (no SDB or back-cover options). For a direct replacement, match the 25 mm bore, 300 mm stroke, 30 mm adjust code, G1/8 port, PT thread, and non-magnet configuration.
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 MBLCJ25X300-30 FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N push and 206 N pull force. At 0.7 MPa, push increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa operating pressure.
No, this specific SKU lacks the built-in -S magnet, so it cannot host AirTAC CMSG (reed) or DMSG/EMSG (electronic) switches. You would need the MBLCJ25X300-30S variant for position detection.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
Request a Quote for Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.