Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50S 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 50mm for a usable window of 200–250mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke250 mm
- Adjustable200–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50S
The AirTAC MBLCJ25X250-50S 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 50 mm of travel, creating a usable stroke window of 200 to 250 mm. This makes it highly effective for applications requiring exact end-position tuning rather than fabricating custom mechanical spacers.
Unlike the fixed rubber bumper found on the base MBLJ series, the screw-tunable air cushion on this unit allows you to dial in end-of-stroke deceleration for heavier or faster-moving loads, protecting the end covers from impact shock. The riveted rolling-packed aluminum barrel retains a heterogeneous two-way grease, maintaining smooth operation across the 30-800 mm/s speed range. Fitted with a built-in magnet (-S), it supports AirTAC CMSG reed and DMSG or EMSG solid-state sensor switches for position detection.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 200–250 mm (trim 50 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 MBLCJ25X250-50S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×250 | Nominal stroke length in mm. |
| -50 | 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 MBLCJ25X250-50S Is Used
PCB Router Z-Axis Lift
Raises and lowers a spindle on a PCB depaneling router, using the 200-250 mm window to set exact cutting depth while the air cushion brakes the 245 N descent to protect the spindle bearings.
Textile Beam Indexing
Shifts a warp beam laterally across a loom, relying on the tunable cushion to halt the 250 mm traverse smoothly without snapping delicate yarns under high tension.
Packaging Flap Folder
Folds carton flaps at high speed on a case erector, using the DMSG solid-state sensor to confirm the 206 N pull stroke completed before the hot melt glue guns fire.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-50S the Right Cylinder?
Stepping up from this 25 mm bore (245 N push @0.5 MPa) to the 32 mm bore yields 402 N, while stepping down to the 20 mm bore offers 157 N for lighter tasks. Choose this MBLCJ over the MBLJ when your moving mass requires tunable pneumatic braking instead of a fixed bumper, or over the MBLC when you need the 50 mm rear stroke adjustment window. Remember that the rear adjuster is a travel stop, and the cushion only decelerates; neither mechanism locks the rod, so external holding methods are needed if the air supply drops. Mounting is limited to Basic, FA, or LB; SDB pivot and back-cover options are not available. For a direct replacement, match the 25 mm bore, 250 mm stroke, 50 mm adjust code, G1/8 port, PT thread, and the -S magnet. Because the stroke is 250 mm on a 10 mm rod, use an external guide to prevent side-load bending.
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 MBLCJ25X250-50S FAQ
At 0.5 MPa, this 25 mm bore cylinder provides 245 N of push force and 206 N of pull force. At 0.7 MPa, the push force increases to 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa. It operates on filtered air at 0.15 to 1.0 MPa, with speeds of 30-800 mm/s.
The 50 mm adjust code means you can mechanically trim the stroke at the rear stopper, creating a usable travel window of 200 to 250 mm. This stopper sets the end position but does not lock the load. Separately, the adjustable air cushion tunes end-of-stroke deceleration, but it also is not a brake. The rod will drift without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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