{"id":1303,"date":"2025-11-24T14:59:22","date_gmt":"2025-11-24T14:59:22","guid":{"rendered":"https:\/\/hycuttingtools.com\/?post_type=product&p=1303"},"modified":"2026-08-31T14:43:45","modified_gmt":"2026-08-31T14:43:45","slug":"hrc55-90-carbide-spot-drill","status":"publish","type":"product","link":"https:\/\/hycuttingtools.com\/id\/produk\/hrc55-90-carbide-spot-drill\/","title":{"rendered":"HRC55 90\u00b0 Solid Carbide Spot Drill for Centering and Chamfering"},"content":{"rendered":"
\n

<\/p>\n

\n

HRC55 90\u00b0 Solid Carbide Spot Drill<\/h2>\n

This HRC55-series 90\u00b0 solid carbide spot drill is designed for accurate spotting, centering and selected chamfering operations in steel, alloy steel and mold steel. Its short, rigid cutting geometry helps establish a controlled starting position before follow-up drilling, while the 90\u00b0 included point can also produce a 45\u00b0 edge chamfer when used perpendicular to the workpiece surface. Standard diameters range from \u00d83 to \u00d812 mm, with standard, 150 mm and selected 200 mm overall-length configurations available.<\/p>\n

\n
Sudut Titik<\/span>
\n90\u00b0 Included Angle<\/span><\/div>\n
Flute Design<\/span>
\n2 Cutting Edges<\/span><\/div>\n
Bahan Alat<\/span>
\nSolid Carbide<\/span><\/div>\n
Kisaran Diameter<\/span>
\n\u00d83\u2013\u00d812 mm<\/span><\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Key Configuration<\/h3>\n
\n
\n

1<\/span><\/p>\n

\n

90\u00b0 Point Geometry<\/h4>\n

Creates a controlled starting feature for follow-up drilling and can produce a 45\u00b0 chamfer around the hole edge.<\/p>\n<\/div>\n<\/div>\n

\n

2<\/span><\/p>\n

\n

Two-Edge Spiral Design<\/h4>\n

Two cutting edges balance the cutting load while spiral flutes provide chip space during shallow spotting and chamfering.<\/p>\n<\/div>\n<\/div>\n

\n

3<\/span><\/p>\n

\n

Standard & Extended Reach<\/h4>\n

Standard-length tools provide the highest rigidity, while selected 150 mm and 200 mm configurations support restricted-access machining.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

Precision Hole-Preparation Functions<\/h3>\n
\n
\n

01 \u00b7 Spotting<\/span><\/p>\n

Creates a shallow conical starting feature that helps the following drill enter at the programmed hole location.<\/p>\n<\/div>\n

\n

02 \u00b7 Centering<\/span><\/p>\n

Improves entry stability for subsequent drilling, especially with small-diameter or extended-length drills in rigid CNC setups.<\/p>\n<\/div>\n

\n

03 \u00b7 Chamfering<\/span><\/p>\n

Produces a 45\u00b0 chamfer around a drilled hole and supports selected edge-breaking and light countersinking operations.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

90\u00b0 Point Geometry & Application<\/h3>\n
\n

\"HRC55

90\u00b0 solid carbide spot-drill point geometry<\/p>\n<\/div>\n

\n

How to Use a 90\u00b0 Spot Correctly<\/h4>\n