OTTO BRENTZEL STAHLVERARBEITUNG E.K.

Our variety of lengths and diameters of dowel rods enables you to more easily create custom woodworking pieces for projects big and small. Our selection includes walnut, oak, cherry, birch dowels and more.

SPIROL’s GD100 Ground Hollow Dowels are designed to be direct replacements for Ground Solid Dowels manufactured per ISO 8734 when used in alignment applications. This innovative product is manufactured from strip steel, and then OD ground to achieve extremely tight diameter tolerances that enable critical alignment up to 20µm. The main advantage of the GD100 Ground Hollow Dowel is its ability to achieve the same alignment as the Ground Solid Dowel with a significant reduction in cost due to its hollow construction. In most scenarios, the Ground Hollow Dowel is approximately 50% lighter and at least 30% less expensive than the solid equivalent. If installation equipment is required, SPIROL also offers a standard comprehensive line of Installation Equipment from manual to fully automatic modules, with or without out fixturing, to support your assembly requirements.

SPIROL’s Dowel Bushings and Spring Dowels are designed to maintain alignment and are used to locate components with respect to each other. These roll-formed, hollow Alignment Dowels have lead-in chamfers that facilitate insertion into the holes of both mating components. The Dowel's flexibility enables absorption of wide hole tolerances and the staggered seam prevents interlocking. Dowel Bushings are designed with an inside diameter clearance that allows the passage of a bolt for fastening, thereby eliminating the need to drill an additional hole. They are also heat treated to isolate the bolt from shear loads.