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Concertina Cover / Folded Bellow

Krius bellow covers are to prevent dust, chips, iron slag.

1. This kind of cover shows no damage or deformation when being trampled or impacted by hard objects. It features long service life, good sealing effect, and smooth running
2. Long stroke and small compression; ratio of length: 1/10
3. It is resistant to coolant, oil, and iron filings, etc.
4. The bellows speed is up to 200m/min
5. There is no metal accessories inner the concertina cover so users do not need to worry that it may get loosen during work
6. The shapes vary correspondingly according the requirements

Applications: laser cutting machine, CNC machining center

Pls kindly note it's better if customer can supply us the guide section drawings with IGS or STP format. Then our professional engineer can design the bellow to customer, if not, pls let me know Machine cover figure. It is better to offer the drawings(or mark above figure) then Krius design exactly.

Pls remark if you have special demand, or we will follow Krius regulation

Technical Parameters
Code Des Figure Test result by Kruis Remark
Lmax Stretched out length

Machine travel range (Not full)
Lmin Compressed length

S Travel distance

Machine max distance (Optional)
W Outer width

Wi Inner width

W0 Min width

h Outer height

Not null
hi Inner height

Not null
d Guide rail center distance

Not null
d1 The distance from flange to guide rail

Not null

Accessories need


Material of cover

Material and surface treatment(Optional)

Guide rail item N0.

(Not null/attched)

Running speed

Not null

Assemble way


Equipment item No.



Scrap or not(Optional)
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