LCN Door Closer Arm: Aluminum (MPN 4040SE-78 AL)
The LCN 4040SE-78 AL is a replacement arm made of aluminum, compatible with the 4040SE series door closers. As a genuine LCN component, it ensures proper operation and fit for maintenance or repair of existing…
SKU 3G-OTH-501038
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Product Description
The LCN 4040SE-78 AL is a replacement arm made of aluminum, compatible with the 4040SE series door closers. As a genuine LCN component, it ensures proper operation and fit for maintenance or repair of existing installations.
Frequently Asked Questions
What is the LCN 4040SE-78 AL door closer arm used for?
The LCN 4040SE-78 AL is a genuine replacement arm for LCN 4040SE series door closers. It is used to restore proper door control and closing force in commercial or industrial applications where the original arm is damaged or worn. 3G Electric supplies this aluminum arm for maintenance and repair.
What are the specifications of the LCN 4040SE-78 AL arm?
The LCN 4040SE-78 AL is an aluminum replacement arm with manufacturer part number 4040SE-78 AL. It is compatible exclusively with the LCN 4040SE series door closers. This genuine LCN component ensures correct fit and reliable operation for repair or retrofit of existing installations.
Where to buy the LCN 4040SE-78 AL door closer arm worldwide?
3G Electric supplies the LCN 4040SE-78 AL aluminum replacement arm to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this genuine LCN component for 4040SE series closers.
How to install the LCN 4040SE-78 AL replacement arm?
Installation of the LCN 4040SE-78 AL arm follows standard door closer arm replacement procedures. First, secure the door in the open position. Remove the old arm by loosening the mounting screws, then attach the new aluminum arm to the closer and bracket. Adjust closing speed per manufacturer guidelines.
Used in
Common applications for LCNLCN Products
3G Electric supplies LCN replacement arms. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









