OPTIMUM logo DGHD-0-3403

Workshop Machinery · Drilling machines

OPTIMUM DH28GS Geared Head Drilling Machine

Geared head. 3 Morse taper. 28mm Drilling Capacity. 3 Phase 1.1/1.5kw.

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NZ Prepared, installed and supported nationwide by Scott Machinery.

Speed range 75 - 2,900 rpm (8 steps)
Drilling capacity (max in mild steel) 28mm
Continuous drill capacity 25mm
Spindle taper 3MT
NZ owned Since 1989
Industry people Practical machine advice
Auckland + Christchurch Two support hubs
Nationwide support Installation, training & service
Parts & accessories Large local range

Product overview

About this machine.

Optimum Maschinen is a respected German company known for manufacturing high-quality machine tools built to strict European standards. Since its founding in 2003, Optimum has become a trusted name in the metalworking industry, offering a wide range of equipment including metal lathes, milling machines, drilling machines, and grinding tools. Designed in Germany and engineered for precision, reliability, and durability, Optimum machines are used across workshops, training centres, and industrial environments throughout Europe and beyond. Their products are developed with a strong emphasis on innovation, safety, and compliance with European CE regulations, ensuring exceptional performance and long service life.

The Optimum DH28GS is a high performance, column mounted geared head drill designed for demanding workshop environments. Built with a solid cast iron frame and precision ground main spindle. Table can move up/down on rack & rotate around the column 360 degrees as well as tilt +/-60 degrees & spin 360 degrees. 16mm Keyless drill chuck & arbor (not shown in photos) The DH28GS delivers reliable, high torque drilling suitable for both light industrial and professional metalworking.

Features:

  • Geared head drive with 8 speed range (75-2,900 rpm) smooth, high torque performance for various materials
  • Drilling capacity up to 28 mm in mild steel (maximum) and 23 mm continuous
  • 3MT spindle taper
  • Hardened and ground spindle ensures concentric accuracy and low run-out
  • Large 376 x 394 mm table with diagonal 14 mm T slots, rotatable 360 degree, and tilting surface for versatile setups
  • 127 mm quill stroke and 260 mm throat depth for handling larger workpieces
  • Low maintenance gearbox with grease lubricated PA6 gears
  • Integrated depth stop with millimeter scale, spindle ejection mechanism, chuck guard with microswitch, and built-in halogen lamp
  • Robustly built thick walled cast iron column (92 mm diameter), total weight 175 kg for stable operation
  • 16 mm keyless drill chuck & arbor

Standard accessories:

  • 16mm Keyless drill chuck & arbor

Safety Features:

  • Latching Emergency stop separate from the on / off buttons
  • Drill chuck safety shield with interlocked microswitch
  • Main isolation switch with lockout
  • Drill ejection system
  • CE Conformity

Published data

Specifications

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Drilling capacity (max in mild steel) 28mm
Continuous drill capacity 25mm
Spindle taper 3MT
Throat 260mm
Quill travel 127mm
Speed range 75 - 2,900 rpm (8 steps)
Column diameter 92mm
Table size 376 x 394mm (accepts M12 x 14mm Tee nuts)
Table load 55kg
Spindle to table (max) 875mm
Spindle to base (max) 1200mm
Motor power 1.1/1.5 kw 415v
Dimensions (W x D x H) 380mm x 600mm x 2040mm
Weight 230 kg
Shipping dimensions 700 x 500 x 2200mm (240kg)

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Auckland · Christchurch · Nationwide support
Regarding OPTIMUM DH28GS