Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X125-10S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X125-10S is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 125mm nominal stroke and a rear adjustable-stroke stopper — trim up to 10mm for a usable window of 115–125mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke125 mm
- Adjustable115–125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- 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 MBLCJ40X125-10S
The AirTAC MBLCJ40X125-10S is a compact, double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. A 40mm bore yields 628N push and 528N pull at 0.5MPa, making it well-suited for medium-force positioning tasks over a 125mm travel. The built-in magnet (-S) supports CMSG, DMSG, and EMSG sensor switches for precise end-of-stroke detection.
This SKU provides a 115-125mm usable stroke window by allowing up to 10mm of rear travel trim. Unlike the fixed rubber bumper on an MBLJ, the screw-tunable air cushion regulates end-of-stroke deceleration to absorb kinetic energy from heavier loads. The riveted rolling-packed barrel and 20um hard-chrome plated carbon-steel rod enhance structural integrity, while the cushion acts purely as a deceleration device, not a mechanical lock.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X125-10S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X125-10S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 125 mm |
| Adjustable window | 115–125 mm (trim 10 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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 MBLCJ40X125-10S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | Nominal stroke length in mm. |
| -10 | 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 MBLCJ40X125-10S Is Used
Printed Circuit Board Tester
Drives a 125mm travel bed of test probes onto PCB panels, using the 10mm rear stroke trim to dial in exact contact compression without over-stressing the board.
Bottle Capping Head
Lowers a spinning capping chuck at 628N force, relying on the adjustable air cushion to soften the downward mechanical stop and prevent thread stripping on plastic caps.
Wood Door Panel Press
Applies adhesive bonding pressure across veneer sheets, using the tunable cushion to prevent sudden impact shocks that could misalign the edge guide rails.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X125-10S the Right Cylinder?
For 628N of push force at 0.5MPa, stepping down to a 32mm bore yields 402N, whereas stepping up to a 50mm bore provides 981N. Choose this MBLCJ over an MBLJ when your moving load requires tunable end-cover protection rather than a fixed bumper, or over an MBLC when you need a rear travel stopper to fine-tune the end position. The rear adjuster sets the travel end and the cushion governs deceleration; neither holds a load statically, so external locks are needed for position holding. Mounting is limited to Basic, FA, or LB styles, as SDB pivots and back-cover options are not available on this series. To match this exact replacement, verify 40mm bore, 125mm stroke, 10mm adjust code, G1/4 port, PT thread, 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 MBLCJ40X125-10S FAQ
At 0.5MPa, this 40mm bore cylinder provides 628N push and 528N pull force. At 0.7MPa, the push force increases to 880N. The maximum theoretical force is 128kgf at the 1.0MPa operating pressure limit.
The rear stroke adjuster is a mechanical travel stop that trims the usable stroke window down to 115-125mm, setting the exact end position. The adjustable air cushion is a separate screw-tunable valve that regulates airflow to decelerate the piston near the covers. Neither component locks the load in place; static holding requires an external braking device.
Authorized Export Seller
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.
Related AirTAC Adjustable-Stroke Cylinders
Request a Quote for Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X125-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.