Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-75S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-75S 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 75mm for a usable window of 225–300mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke300 mm
- Adjustable225–300 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-75S
The AirTAC MBLCJ25X300-75S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. With a 25mm bore, it generates 245N of push force at 0.5 MPa. The rear stopper allows you to trim up to 75mm of travel, creating a usable stroke window of 225-300mm. This extended 300mm travel suits automated packaging and testing jigs needing deep linear reach. The integrated -S magnet enables position feedback via CMSG reed or DMSG/EMSG electronic switches.
Unlike the fixed rubber bumper on an MBLJ, the screw-tunable air cushion lets you dial in end-of-stroke deceleration for heavier or faster moving loads, protecting the end covers. The riveted rolling-packed aluminum barrel and grease-retaining piston seal prevent contamination ingress. Remember the rear adjuster is a mechanical travel stop, not a load-holding lock; the rod drifts without live air pressure.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-75S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-75S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 300 mm |
| Adjustable window | 225–300 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 MBLCJ25X300-75S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MBLCJ25X300-75S Is Used
Thermoformer Plug Press
Driving a 300mm deep plug assist into a thermoforming oven, the 245N push force and tunable air cushion prevent harsh impacts at the mold bottom while the -S magnet confirms press depth.
PCB Depaneling Saw
Feeds a circular blade through assembled PCBs at a controlled 225-300mm rate, using the rear stroke stopper to set the exact cut limit and the air cushion to soften the rapid retract.
Textile Beam Loom
Actuates a tensioning guide for heavy thread beams, relying on the 206N pull force and the DMSG solid-state switch to track yarn feed exhaustion over the long 300mm travel.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X300-75S the Right Cylinder?
Stepping down from this 25mm bore (245N push @0.5MPa), the 20mm bore yields 157N, whereas stepping up to the 32mm bore provides 402N. Choose this MBLCJ over the MBLJ when your application speed requires tunable end-cushioning rather than a fixed bumper, or over the MBLC if you need to trim the 300mm travel down to a 225mm minimum. Because this stroke reaches the 300mm maximum for a 25mm bore, the small Ø10 rod is highly susceptible to side-load bending; always use an external guide rail to prevent binding.
Replacement match: 25mm bore, 300mm stroke, 75mm adjustable stroke, G1/8 PT port, Basic mounting, with a built-in magnet (-S). Mounting is limited to Basic, FA, or LB; no SDB or back-cover options exist. Neither the cushion nor the adjuster locks the load in place.
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 MBLCJ25X300-75S FAQ
At 0.5 MPa, this 25mm bore cylinder provides 245N push and 206N pull force. At 0.7 MPa, the push force is 343N. The maximum theoretical force is 50 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
The rear adjuster trims the travel by up to 75mm, setting a mechanical end-stop window of 225-300mm, but it does not lock the load in place. The adjustable air cushion screw tunes the end-of-stroke deceleration rate to protect the end covers from impact; it also does not hold position.
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 MBLCJ25X300-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.