Railway Internal Combustion engine drilling machine

This is the Railway Internal Combustion Engine Drilling Machine, model NZG-31, branded Linkage.

It uses a four-stroke petrol internal combustion engine (Honda-type) with rated power of 1.2 kW.

Borehole diameter range is 9.8 mm to 36 mm using hollow drill bits.

Typical drilling time is ≤ 25 seconds, depending on material, bit size and operator technique.

Dimensions are approximately 650 × 230 × 250 mm (L × W × H) for the NZG-31 unit; another dimension set 800 × 340 × 400 mm appears in the specification list. Machine weight is about 17 kg.

Designed primarily for railway maintenance, construction and emergency repairs — drilling rails, metal components and related fastening points. It uses hollow drill bits and can work on common rail metals; for specific alloys (e.g., certain stainless steels) choose appropriate drill bits and cutting parameters.

The machine uses a screw-nut clamping mechanism with a quick-opening function for fast clamping and accurate positioning.

Yes. At about 17 kg and compact dimensions, the NZG-31 is portable and intended for on-site railway use.

Wear appropriate PPE (safety glasses, gloves, hearing protection); secure the machine and workpiece before drilling; follow safe fuel-handling practices for petrol engines; keep bystanders clear; allow engine and bit to cool before servicing; follow the operator manual.

It uses hollow drill bits suited to the 9.8–36 mm range. Included accessories are not specified in this listing — confirm with the seller which bits and accessories are supplied.

Perform routine engine maintenance per the engine manufacturer's recommendations (fuel, oil, air filter, spark plug checks), keep cutting edges sharp, clean chips and debris after use, inspect clamps and fasteners, and replace worn parts as needed.

Place of origin is China and the brand listed is Linkage. For ordering or service contact the supplier or authorized dealer.

Idle speed is specified as ≥ 270 r/min.

The specification lists a four-stroke petrol engine but does not specify the starting method. Confirm with the supplier whether recoil (manual) or electric start is provided for the NZG-31.

Warranty and after-sales support are not specified in this description. Contact the manufacturer or seller (Linkage) for warranty terms, spare parts availability and service options.