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DISEC Diamond Rok Sferik BKD291-25D1 – Grade 4 Super Top Euro Cylinder Protector, 38 mm Fixing Centres
DISEC Diamond Rok Sferik BKD291-25D1 mechanical Euro cylinder protector with integrated 88 × 68 mm Super Top escutcheon and diamond anti-drilling inserts. Nominal size 25 mm, 38 mm M6 fixing centres, reinforced Flex System mounting and anti-skating protection. Grade 4 burglary resistance declared by DISEC. Offered in bronze and polished brass.
TRUSTED EXPERIENCE SINCE 1913Over 100 years of experience in hardware, tools and technical products.
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ORDERS PREPARED WITH CAREWe prepare every order with care
Description
DISEC Diamond Rok Sferik BKD291-25D1 – Euro Cylinder Protector
The DISEC Diamond Rok Sferik BKD291-25D1 is a mechanical security protector for Euro profile cylinder locks, featuring an integrated Super Top escutcheon and a hemispherical front profile. It incorporates diamond inserts and hard-metal reinforcements to resist drilling and cutting attacks, together with Flex System mounting and anti-skating protection. DISEC specifies grade 4 burglary resistance.
Diamond protection and construction
The Super Top construction integrates the escutcheon and protector into a single assembly, with an external profile that reduces accessible gripping surfaces. Diamond inserts enhance resistance to mechanical attacks, while hard-metal reinforcements provide additional protection against drilling and cutting.
The anti-skating system is designed to resist rotor extraction. The Flex System uses reinforced M6 fixing screws to improve the connection to the lock. The front opening allows normal insertion and operation of the cylinder key.
Dimensions and technical specifications
| Type | Mechanical protector with integrated Super Top escutcheon |
|---|---|
| Application | Euro profile cylinder locks |
| Overall dimensions | 88 × 68 mm |
| Circular envelope | Ø54 mm |
| Overall projection | 27 mm |
| Nominal size | 25 mm |
| Fixing centres | 38 mm |
| Fixing thread | M6 |
| Reinforcing elements | Diamond inserts and hard metal |
| Mounting system | Flex System |
| Rotor protection | Anti-skating system |
| Burglary resistance grade | 4 |
| Orderable finishes | Bronze, polished brass |
Compatibility and installation
The BKD291-25D1 is designed for Euro profile cylinder locks with 38 mm M6 fixing centres. It may be suitable for compatible CISA, Cerutti, FIAM, Mottura, Securemme and TESA lock configurations, subject to verification of the exact lock model and door mounting arrangement.
Before installation, check the cylinder position relative to the external door panel, fixing-hole alignment and escutcheon clearance. The nominal protector size must suit the cylinder projection to ensure correct key insertion and operation.
A DISEC cylinder protector spacer is listed separately in the Matteoda catalogue. Its suitability depends on the actual dimensions and fixing arrangement.
Before ordering: check the 38 mm fixing centres, cylinder size, door panel thickness and external clearance. Contact Matteoda customer service for technical assistance and estimated delivery times.
Product Details
708.0843071
Specific References
- ean13
- 8029470067537
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DISEC Diamond Rok Sferik BKD291-25D1 mechanical Euro cylinder protector with integrated 88 × 68 mm Super Top escutcheon and diamond anti-drilling inserts. Nominal size 25 mm, 38 mm M6 fixing centres, reinforced Flex System mounting and anti-skating protection. Grade 4 burglary resistance declared by DISEC. Offered in bronze and polished brass.