Technical Data
- Maximum stroke: 7.0 mm
- Maximum setting force: 21 kN
- Operating air pressure: 5.5–7.0 bar
- Weight (without exchange unit): 2.2 kg
- Sound level: < 70 dB(A)
Innovative joining technology
Wear-free, stable threads for high-quality lightweight structures
SPREDLOC® are threaded studs which Böllhoff offers in combination with the respective processing systems for expansion anchoring. The threaded studs according to property class 8.8 have been especially designed for simple and efficient installation with one-sided accessibility after the manufacture of your component. The result are wear-free, stable threads for your high-quality lightweight structures made of aluminium, magnesium or polymers.
PLUS FACTORS
Advantages of SPREDLOC®
Efficient
Pre-installed, one-piece fastener. No holding thread is required and thread creation in formed and drilled tap holes possible. Stable stud threads creation according to property class 8.8.
Component cleanliness
No chips or burrs during installation.
Versatility
Suited for a wide range of lightweight materials.
Easy processing
„Blind“ setting method (one-sided accessibility). Established RIVKLE® installation equipment is available for processing – ranging from hand tools to a fully automatic systems.
METHOD AND PRINCIPLE
Precision threads in modern lightweight structures
SPREDLOC® is a pre-installed fastener consisting of two elements. It is spun on using the installation tool and inserted into the mounting hole. The hole can be preformed or machined with common drills as a blind or through hole.
Through the axial pulling motion of the installation tool on the stud of the fastener, the sleeve is pulled over the stud shank and at the same time expanded. In the process, the diamond knurl of the anchoring sleeve presses into the wall of the hole on the component. The longitudinal knurling on the stud head prevents the stud from rotating inside the sleeve.
A cylindrical shoulder on the threaded stud restricts the possible setting travel and increases the pull-out strength. The SPREDLOC® is now anchored and locked against screwing and pull-out.
This innovative joining solution is suited for material thicknesses and dome heights from 6 mm.
Please refer to the product catalogue for torque values and pull-out strengths.
The SPREDLOC® technology
Information and more
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