BD-II Continuous Steel Bar Marking Machine (Daru Steel Bar Marking Machine / Dotting Machine) supplier, available in two specifications: 300mm and 400mm. It is used for marking dots on round steel, flat steel, steel pipes, section steel, and other non-ferrous metal materials for tensile test samples. This machine features precise construction, easy operation, high efficiency, accurate marking, and is easy to inspect and repair.
Maximum gauge length: 300mm
Gauge interval: 5mm or 10mm (adjustable).
Power supply: 220V 50Hz
Motor power: 10W
Dimensions (length × width × height): 460mm × 315mm × 450mm.
Weight: approx. 25kg.
BD-II Continuous Steel Bar Marking Machine (Shanghai Steel Bar Marking Machine / Dotting Machine) supplierTechnical Requirements:
Each rock of the handle produces 30 or 40 marks.
The distance between marks is 10mm, with an error not exceeding ±0.15mm. The total length is 300mm or 400mm for marking. Made of ball bearing round steel, hardness not less than RC55.
Application Method:
When in use, place the sample material into the (sample seat) slot, and adjust the nut seat according to the length of the sample material. Adjust the screw to regulate the length and adjust the sample seat according to the diameter of round materials. Loosen the fixing screw on the sample seat to move it forward or backward. Align with the center of the diameter according to the material requirements, then pull down the handle with your left hand until the marking point contacts the sample material, and slightly tighten it. Turn the handle clockwise with your right hand for one full rotation to complete the marking.
Our factory stocks spare parts such as marking drills, (roller frames, rollers), and springs, which can be purchased at any time by mail. If the machine does not meet technical requirements or is damaged due to quality issues, our factory will provide free repair and replacement.
Performance Features:
1. Keep the two columns and punch head well lubricated to ensure smooth and flexible operation.
2. Do not damage the punch head to avoid losing precision, which may render the equipment unusable.
Working Principle:
This equipment uses a micro motor as power, which drives a high-precision ball screw through a synchronous belt, thereby driving the punch head to move horizontally. Each full (or half) rotation of the screw moves the impact needle 10mm (or 5mm), while a sensor collects a signal, which then drives a high-frequency electromagnet to drive the impact needle for marking. With continuous motor operation, it can continuously mark 60 points (5mm) or 30 points (10mm). This transmission and striking method does not require uniform screw rotation speed; even if the speed is uneven, the accuracy of the gauge length is ensured.
