With HR 500 high-performance reamers you will find the ideal tooling solution for all diameters from 2.97 to 76.2 mm. To always be able to apply the optimal HR 500 high-performance reamer there is a choice of various HR 500 types.
Guhring’s high-performance reamer HR 500 CAST is now available as an option especially for the machining of GGG. The special tools based on the HR 500 CAST high-performance reamer offers entirely new possibilities for highly efficient reaming of GGG.
Now it’s also possible in GGG to achieve surface finish qualities below Ra 1.2. The solid carbide option of HR 500 GGG gives the power reamer a high stability and rigidity against torsion and radial forces. As is usual with the high-performance reamer HR 500 a very long tool life and high cutting values are possible also when machining GGG.
The new HR 500 CAST for the machining of GGG achieves cutting speeds from 120 to 250 m/min, extremely high feed rates and surface finish qualities below Ra 1.2 – naturally with maximum process reliability and high hole quality.
The HR 500 CAST GGG option achieves these outstanding values thanks to its grey cast iron geometry and Guhring’s extremely hard Signum-coating. This combination prevents built-up edges and premature circular land wear: Typical wear factors when machining cast iron are hereby with averted.
Also with diameters above 40.00 mm the Guhring HR 500 technology is the first choice for high-performance reaming. Numerous intelligent solutions ensure maximum cutting values and quality also with large diameters:
Diversity for perfect machining results
HR 500 GT tool heads are available as a semi-standard range with short delivery times in the diameter range > 40.0 to 76.2 mm in the following material specific designs:
Furthermore, we manufacture special tools to customer specific specifications on request.
Optimal cooling lubrication
Thanks to the newly developed, patent pending, redirection screw on the face side of HR 500 GT tool heads, the cooling lubricant reliably reaches the cutting edges. A blocking of the coolant exits by the chips is not possible. Thanks to the especially flat design of the redirection screw the machining of blind holes is possible directly up to the base of the hole.
If required the redirection screw can be removed when machining a blind hole.
With the HR 500 T reamer the successful solid carbide HR 500 option is extended to diameter 39.1 mm. Thanks to the short, compact solution economically efficient production is ensured. Nevertheless it is possible to fall back on the diverse possibilities of HR 500.
Thanks to the universal HA shank it is possible to flexibly combine HR 500 T with standard chucks and numerous extensions. Thanks to this significant advantage expensive special holders are not necessary. This enables a cost-efficient and a very high quality reaming operation.