Belmont Equipment HS-50 CNC Sinker EDM

$60,000 – $150,000 Updated 2026-03-17

Key Specifications

Table Travel

500x380x400 mm (X/Y/Z)

Work Tank

500x380 mm

Maximum Workpiece Weight

2,000 kg (4,400 lbs)

Generator Current Range

0.5A – 120A

Drive System

Servo Z-axis with cross-reference feedback

Surface Finish

Ra 0.5 micron (finishing)

Overview

The Belmont Equipment HS-50 is a heavy-duty CNC sinker EDM from Belmont Equipment Corporation, a Michigan-based EDM manufacturer known for large-format sinker EDM machines used in the die casting, forging die, and large mold tooling industries. The HS-50 offers a 500x380 mm work tank on a robust cast iron base, with a maximum workpiece weight of 2,000 kg — significantly higher than typical sinker EDM machines, enabling direct burning of large die casting die sets without disassembly. The machine uses a servo-driven Z-axis with cross-reference feedback for precise depth control in deep cavity burns. Belmont's proprietary power generator provides current ranges from 0.5A to 120A with variable frequency control for both roughing and finishing operations in a single electrode program. The HS-50 targets North American die casting tool manufacturers, large forging die shops, and heavy equipment toolrooms where workpiece weight and tank size are limiting factors for standard machines.

Full Specifications

Parameter	Value
Table Travel	500x380x400 mm (X/Y/Z)
Work Tank	500x380 mm
Maximum Workpiece Weight	2,000 kg (4,400 lbs)
Generator Current Range	0.5A – 120A
Drive System	Servo Z-axis with cross-reference feedback
Surface Finish	Ra 0.5 micron (finishing)
Positioning Accuracy	±0.005 mm
Control	Belmont proprietary CNC
Frame	Heavy cast iron base
Power	220/480V, 3-phase

Strengths & Limitations

Strengths

2,000 kg workpiece capacity far exceeds standard sinker EDM limits
Cast iron base provides extreme rigidity for precision burns on heavy die sets
North American manufacturer with domestic parts and service support
120A maximum current handles heavy roughing of large die cavities efficiently
Competitive pricing in the heavy-duty sinker EDM segment

Limitations

Ra 0.5 micron finish less fine than premium Japanese machines
Belmont control less sophisticated than Sodick, GF, or Makino adaptive generators
Limited automation capability — no AEC or pallet system integration standard
Brand recognition limited outside North American die casting tool industry

Best For

Die casting tool manufacturers burning large die cavities and cores Forging die shops eroding large impression dies in H13 tool steel Heavy equipment toolrooms machining large press brake dies and forming tools North American mold shops with 2,000+ kg die sets that cannot be disassembled

Frequently Asked Questions

01 What is the advantage of 2,000 kg workpiece capacity?

Large die casting die sets and forging dies often weigh 500-2,000 kg complete. Machines with only 500-800 kg limits require disassembly of die sets before burning, adding setup time. The HS-50's 2,000 kg capacity enables burning complete assembled die sets directly on the machine.

02 What electrode material works best with the HS-50 for die casting tooling?

Graphite is most common for die casting die cavities due to its machinability, low wear rate with modern IGBT generators, and ability to produce fine surface finishes in finishing passes. Copper electrodes are used for very fine detail features requiring minimal corner radius.

03 Can the HS-50 be integrated with a gantry for automated loading?

The HS-50 is not designed for gantry automation given its 2,000 kg workpiece capacity — workpiece handling requires crane or forklift. Electrode handling automation is possible through custom setups, though not standard.