Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30S 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 MBLCJ25X300-30S
The AirTAC MBLCJ25X300-30S 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 push and 206 N pull at 0.5 MPa. The 30 mm rear adjuster trims the end position, creating a usable travel window of 270 to 300 mm. This 300 mm stroke reaches the maximum standard limit for a 25 mm bore, making it suited for long-traverse actuation where end-cover impact protection is critical.
Unlike the fixed rubber bumper on an MBLJ, the screw-tunable air cushion on this SKU decelerates heavier loads at high speeds to prevent end-cover damage. The rear stopper sets the travel end but does not lock the load; a separate external guide is required to prevent rod bending over this long stroke. The built-in magnet (-S) enables position detection using CMSG reed or DMSG/EMSG solid-state switches.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30S |
|---|---|
| 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 MBLCJ25X300-30S
| 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 MBLCJ25X300-30S Is Used
PCB Conveyor Transfer
Moves populated PCB panels along a 300 mm traverse; the adjustable 270-300 mm window sets the exact handoff position, while the air cushion halts the 245 N push smoothly.
Textile Loom Tensioner
Positions yarn guides across a wide loom track; the tunable cushion absorbs the 300 mm stroke momentum to protect thread alignment and prevent end-cover wear.
Packaging Film Feeder
Extends a cutting blade assembly over a wrapping machine; the DMSG electronic sensor confirms full extension while the cushion prevents jerky stops on the film web.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-30S the Right Cylinder?
For lower force needs, step down to the 20 mm bore (157 N push at 0.5 MPa); for higher loads, step up to the 32 mm bore (402 N push at 0.5 MPa). Choose this MBLCJ over the MBLJ when your application moves fast enough to need tunable end-of-stroke deceleration rather than a fixed bumper. If you do not need to trim the stroke, the fixed-stroke MBLC offers the same cushioning. Remember the adjuster is a travel stop, not a lock, and neither it nor the cushion holds the load without live air. Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. To replace this SKU exactly, match the 25 mm bore, 300 mm stroke, 30 mm adjust code, G1/8 PT port, and the -S 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 MBLCJ25X300-30S FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N push and 206 N pull force. At 0.7 MPa, the push increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa operating pressure.
The adjustable stroke uses the 30 mm rear stopper to trim the travel end position, giving a usable window of 270 to 300 mm. The adjustable air cushion is a separate screw that tunes end-of-stroke deceleration. Neither holds the load; the stopper is a travel limit, not a lock.
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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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Most inquiries answered within 7-8 hours.
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