Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-30S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-30S 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 30mm for a usable window of 220–250mm. Adjustable air cushion (both ends).
- BoreØ25 mm
- Stroke250 mm
- Adjustable220–250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-30S
The AirTAC MBLCJ25X250-30S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and tunable air cushions at both ends. It delivers 245 N of push force at 0.5 MPa. The 30 mm rear trimmer creates a usable travel window of 220-250 mm, letting you fine-tune the end position without mechanical shims. A G1/8 port and Ø10 mm hard-chrome plated rod handle the pneumatic flow for this 250 mm stroke length.
Unlike the standard MBLJ bumper, the adjustable air cushion screw-tunes end-of-stroke deceleration to absorb kinetic energy from faster moves, protecting the end covers. The built-in magnet (-S) supports CMSG reed and DMSG/EMSG electronic sensors for position detection. Remember the rear stopper sets the travel limit but does not lock the load, and the extended length (A + 2 x stroke + adjust) requires checking your envelope.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-30S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-30S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø25 mm |
| Nominal stroke | 250 mm |
| Adjustable window | 220–250 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 MBLCJ25X250-30S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MBLCJ25X250-30S Is Used
PCB Edge Router Feed
Pushes a printed circuit board panel into a high-speed routing spindle, using the 220-250 mm window to dial in the exact cutting depth against the tool.
Textile Loom Takedown
Actuates the fabric take-up roller at 245 N push force, relying on the tunable air cushion to silently decelerate the lever without jarring the weave.
Medical Vial Sorting Gate
Diverts glass vials down a reject chute, using the DMSG electronic sensor to confirm full rod extension before the next bottle arrives.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ25X250-30S the Right Cylinder?
Stepping down, the Ø20 bore yields 157 N push at 0.5 MPa, whereas stepping up to the Ø32 bore provides 402 N. Choose MBLCJ over the MBLJ when your moving mass requires tunable end-deceleration instead of a fixed rubber bumper, or over the MBLC if you need to trim the end position. The 30 mm adjuster is a travel stop, not a lock; the cushion only decelerates. Mounting is limited to Basic, FA, or LB (no SDB or back-cover). For exact replacements, match the 25 mm bore, 250 mm stroke, 30 mm adjust, G1/8 PT thread, and -S magnet. At 250 mm stroke, the Ø10 rod is susceptible to side-loading; use an external guide to prevent binding.
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 MBLCJ25X250-30S FAQ
At 0.5 MPa, this 25 mm bore cylinder pushes with 245 N and pulls with 206 N. At 0.7 MPa, the push force is 343 N. The maximum theoretical force is 50 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
The 30 mm rear adjustment is a mechanical travel stop that physically limits the stroke window from 220 to 250 mm. The adjustable air cushion is a separate needle valve that tunes the pneumatic deceleration at the stroke ends. Neither holds the load in place; a separate locking device is required for position holding.
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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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Related AirTAC Adjustable-Stroke Cylinders
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