Founded in 1987 and headquartered in Schorndorf, Germany, SCHIEK Präzisions-Rundschleifen is a third-generation family business specializing in high-precision grinding arbors, spindle extensions, and customer-specific precision components.

The company began as a small grinding operation founded by Hermann Schiek. Over nearly four decades, SCHIEK has steadily expanded its manufacturing capabilities while remaining focused on the craftsmanship, flexibility, and personal service associated with a family-owned business.

Today, the company is led by Raphael Schurr, representing the third generation of the family. Under his direction, SCHIEK continues to build on its traditional expertise in precision cylindrical grinding while investing in new materials and manufacturing technologies.

SCHIEK’s guiding principle, “Precision Is Our Nature”, reflects its commitment to manufacturing components for applications in which concentricity, rigidity, material stability, and repeatability are essential. The company is certified according to DIN EN ISO 9001: 2015 and supplies machine-tool builders and manufacturers throughout the world.

SCHIEK’s name may be unfamiliar to some North American manufacturers because its grinding arbors have traditionally reached the market through European precision-grinding machine builders.

Many of these builders source their internal-grinding arbors and spindle extensions directly from SCHIEK. When their machines are delivered to customers in North America, SCHIEK tooling is frequently included as part of the original machine configuration.

As a result, SCHIEK products have been operating in North American manufacturing facilities for many years, often without the end user being familiar with the company that produced them.

SCHIEK estimates that approximately 60% of fuel-system components worldwide are ground using its grinding arbors. This presence reflects the company’s long-standing relationships with European grinding-machine manufacturers and its experience in demanding, high-volume internal-grinding applications.

Through Rey Technologies, North American customers can now work more directly with SCHIEK when replacement arbors, new tooling, or application-specific solutions are required.

While carbide remains the preferred material for many grinding applications, SCHIEK also develops grinding arbors from alternative advanced materials.

Its CB and GC grinding-arbor product families are designed to reduce the rotating mass compared with conventional carbide versions. Depending on the design, these arbors can weigh approximately 70% to 80% less than comparable carbide products.

Lower weight can reduce spindle loading, improve high-speed behavior, simplify handling, and potentially extend spindle life. Certain advanced materials also provide favorable thermal characteristics for high-speed grinding applications.

These products give grinding-machine users another option when arbor length, rotational speed, vibration, or spindle loading begins to limit the process. Specific CB and GC applications, and the productivity improvements they can provide, will be explored in a future article.

Coolant delivery is especially important in internal grinding, where the grinding zone can be difficult to reach using external nozzles.

SCHIEK can integrate internal coolant passages into the grinding arbor to deliver coolant closer to the wheel and cutting zone. Depending on the arbor design and spindle interface, multiple coolant configurations are available.

A properly engineered internal-coolant arbor can help:

• Improve coolant access to the grinding zone
• Control grinding temperatures
• Support chip removal
• Reduce wheel loading
• Improve process consistency
• Protect the surface integrity of the workpiece

The coolant arrangement can be developed around the machine, wheel, bore geometry, spindle speed, and available coolant supply.

SCHIEK grinding arbors and spindle extensions are used across a broad range of precision-manufacturing industries, including:

• Fuel-injection systems
• Bearing manufacturing
• Transmission technology
• Pump components
• Automotive manufacturing
• General internal cylindrical grinding

The company’s ability to manufacture customized, small-diameter, and long-reach arbors makes it particularly relevant for applications requiring tight bore tolerances, excellent surface finishes, and stable operation at high spindle speeds.

With Rey Technologies serving as SCHIEK’s North American representative, manufacturers now have a direct resource for evaluating and sourcing SCHIEK products.

Support is available for:

• Replacement arbors for existing grinding machines
• New internal-grinding applications
• Custom grinding-arbor designs
• Carbide spindle extensions
• Lightweight CB and GC grinding arbors
• Internal-coolant solutions
• Customer-specific precision components
• Special tools made from carbide and other advanced materials

For replacement applications, SCHIEK can evaluate an existing drawing, arbor, or machine-interface specification. For new projects, Rey Technologies can coordinate the collection of application data and work directly with SCHIEK to determine the appropriate material, geometry, interface, coolant arrangement, and manufacturing approach.

SCHIEK may be a new name to many North American manufacturers, but its products have already established a significant presence through some of Europe’s leading grinding-machine builders. The partnership with Rey Technologies now brings the company, its products, and its nearly four decades of precision-manufacturing experience directly to the North American market.