In the fields of metal fabrication preprocessing and heavy-duty dismantling, OTC DAIHEN’s Air Plasma Cutting Machines are renowned for their fast arc ignition, smooth cuts, and durable consumables. Tailoring to different plate thicknesses and construction environments, OTC offers the highly mobile C70 (70A)—an excellent tool for medium-to-thin plates, and the D12000 (120A)—a water-cooled heavy-duty beast specifically designed for extreme ultra-thick plates. To ensure cutting efficiency and maximize consumable lifespan, this article provides a detailed breakdown of the standard factory configuration lists for these two core models, along with professional torch pairing and cooling system selection guides.
1. Cutting Expert Guide: How to Select the Right Hardware for Your Plasma Cutter?
The core of plasma cutting lies in the control and heat dissipation of the “high-temperature plasma arc.” Purchasing the wrong configuration will directly lead to the instant burnout of cutting nozzles and electrodes. Please clarify the following working conditions before procurement:
- Plate Thickness Determines the Model and Cooling Method: For medium-to-thin plates under 20mm, the C70 air-cooled system is more than sufficient; its structure is simple, requiring only compressed air to operate. However, if you frequently cut ultra-thick plates over 30mm or even 40mm, the D12000 water-cooled system is mandatory. Water cooling forcefully cools the interior of the cutting nozzle, protecting consumables from melting during high-heat continuous cutting.
- Hand Torch vs. Machine Torch (Core Interaction Differences):
Hand Torch (e.g., CT-75 / CTZW-1201): Designed exclusively for “manual cutting,” featuring an ergonomic trigger, suitable for workers holding the torch to perform profile cutting and dismantling operations.
Machine Torch (Straight Handle): Designed specifically for “CNC cutting machines, cross-carriage specialized machines, or robotic automated cutting.” The torch body is a straight cylinder, making it easy to fix with machine tool fixtures. It does not have a manual trigger; the arc ignition is automatically controlled by the machine.
2. OTC DAIHEN C70 Air-Cooled Plasma Cutter Standard Factory Configuration List (70A Class)
Application Scenarios: Efficient manual cutting and destructive dismantling of medium-to-thin plates (recommended under 20mm) in general machining, automotive sheet metal, and scrap steel recycling yards.
| NO. | Core Component Name | Original Model/Spec | Std Qty |
|---|---|---|---|
| 1 | Air-Cooled Plasma Cutting Power Source | MRCT-70 | 1 Unit |
| 2 | Air-Cooled Hand Torch (6m) | CT-75 | 1 PC |
* Optional Suggestion: If the workshop operating radius is large, the C70 can be equipped with an optional 10-meter cable torch upon request; if used for a light CNC cutting bed, a 10-meter or 20-meter machine torch must be purchased instead.
3. OTC DAIHEN D12000 Water-Cooled Plasma Cutter Standard Factory Configuration List (120A Heavy-Duty Class)
Application Scenarios: Extreme penetration cutting for heavy steel structures, shipyards, and extra-thick metal plates (up to 40mm+). Comes standard with an independent forced water-cooling system.
| NO. | Core Component Name | Original Model/Spec | Std Qty |
|---|---|---|---|
| 1 | Water-Cooled Plasma Cutting Power Source | TRC-122 | 1 Unit |
| 2 | Heavy-Duty Water-Cooled Hand Torch (10m) | CTZW-1201 | 1 PC |
| 3 | Original Matching Cooling Water Tank | CU-102 | 1 Unit |
* Optional Suggestion: As the mainstream plasma power source for large gantry CNC cutting machines, the D12000 can be paired with optional 10m / 20m / 30m water-cooled machine torches to meet the automated integration needs of ultra-large span cutting beds.