Overview

This document is a technical catalog for the AG-ESS and AG-ES drill series manufactured by Nachi-Fujikoshi Corporation. It provides detailed information on product specifications, recommended applications, cutting conditions, and contact information for sales and support.

Product Description

The AG-ESS and AG-ES drills are high-speed steel (HSS) drills with a new high-alloy composition and advanced AG coating, designed to approach the performance of carbide drills. They offer high-speed drilling, long tool life, high reliability, and cost efficiency. The drills are optimized for wear resistance and chipping resistance, enabling stable drilling even in materials harder than HB300.

Key Features

• Next-generation high-alloy HSS combined with new AG coating.
• Tool life exceeds that of powder metallurgy HSS drills by approximately 30%.
• High-speed performance comparable to carbide drills with the reliability of HSS.
• Optimized groove geometry, relief shape, and helix angle for superior chip removal and chip breaking.
• Applicable to a wide range of materials from soft to hard without material restrictions.

Recommended Applications

The AG-ESS and AG-ES drills are suitable for various materials including structural steel, carbon steel, alloy steel, die steel, pre-hardened steel, stainless steel, cast iron, aluminum alloys, and non-ferrous metals. For stainless steel, the AG-SUS drill series is recommended, and for aluminum and non-ferrous metals, the DLC drill series is suggested.

Material Suitability Table

• Structural Steel (SS): Excellent
• Carbon Steel (S_C, 150-200 HB): Excellent
• Alloy Steel (SCM, 20-30 HRC): Good
• Die Steel / Pre-hardened Steel (SKD, NAK, 30-40 HRC): Good
• Stainless Steel (SUS304): Moderate
• Cast Iron (FC, FCD): Limited
• Aluminum / Non-ferrous Metals: Recommended with DLC series

Cutting Conditions and Parameters

The catalog provides detailed cutting conditions including recommended cutting speeds, feed rates, and depths of cut for various materials and drill diameters. These conditions are based on vertical machine tools with sufficient coolant supply. Adjustments are advised for horizontal machines, deep hole drilling, or after tool regrinding.

General Guidelines for Use

1. Use the standard cutting conditions as a starting point for new operations.
2. Adjust conditions if vibration or abnormal sounds occur during drilling.
3. If machine maximum speed is lower than recommended, use the maximum available speed and reduce feed rate proportionally.
4. For horizontal machines or deep hole drilling, use step drilling and ensure coolant reaches the drill tip.
5. Reduce cutting parameters after tool regrinding.

Example Cutting Conditions

• SS400 (Structural Steel): 50 m/min cutting speed, 0.27 mm/rev feed, 19 mm through hole.
• S50C (Carbon Steel, 180 HB): 60 m/min cutting speed, 0.18 mm/rev feed, 19 mm through hole.
• SCM440H (Alloy Steel, 310 HB): 24 m/min cutting speed, 0.12 mm/rev feed, 19 mm through hole.

Tool Dimensions and Ordering Information

The catalog includes extensive tables listing drill diameters, flute lengths, neck lengths, overall lengths, and shank diameters for the AG-ESS and AG-ES series. The drills feature a 135° point angle with 2-flute plus X-shaped geometry and h7 tolerance on shank diameter.

Performance Comparison

Graphs and data compare the AG-ESS drills with competitor powder metallurgy HSS coated drills and cobalt HSS drills, demonstrating superior tool life and hole count performance. The AG-ESS drills approach carbide drill performance in terms of speed and feed rates while maintaining longer tool life.

Support and Contact Information

Contact details for Nachi-Fujikoshi Corporation's Tokyo and Toyama headquarters, international sales department, and regional sales offices across Japan are provided. A telephone service is available for inquiries about cutting conditions and tool selection.

Critical Notes

• Cutting conditions are guidelines and should be adjusted based on machine and workpiece behavior.
• Ensure adequate coolant supply, especially for deep hole and horizontal machining.
• Tool regrinding requires reduction in cutting parameters to maintain tool life and performance.