Standard Wire-line Drill Tools Overshot Core Assembly
>> Introduction
The structure and work principle of C series wire line drilling tools C series wire line drilling tools included core barrel assembly and overshot assembly:Outer tube assembly contains locking coupling,adapter coupling ,landing ring,reaming shell,outer tube,outer tube and bit. inner tube assembly including spearhead point,detent mechanism,adjusting mechanism, Pensile institutions, tube assembly remove institutions, In position news agency and Core jams news agency etc.

Overshot is a necessary device in wireline drilling. It's dropped on a cable and directly couples onto and lift up the inner tube assembly, eliminating the need to couple and uncouple the rod string each time the core is retrieved.

Ezy Lock Overshot is a modified product based on compact overshot. It protects against accidental release of the core barrel. This is ideal for suface application when hoisting above ground. Q series overhshot are available in A, B, N, H and P size.

>> BQ Overshot Assembly structure diagram

>> Package & Shipment

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>> About Us

JCDRILL provide users high quality Mining & Drilling solutions,we always focus on the strategic conception of "Survival by quality, Development by credit''. We have specilized in research, development and produce of rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories & drilling services. constantly provide professional drilling solutions for all customers with our advanced technology, excellent equipment, strict testing means and good service network, which establish our brand "JCDRILL" a good image of market, now,we products account for 50% of domestic market and have been export to more than 40 countries, and we awarded ISO9001: 2000 in November, 2002. With excellent technology and solid market service capabilities, we have both a sound marketing system and excellent service support system, which help us win confidence of customers both at home and abroad,we can provide drilling rig users with high quality professional air compressor solution and relative after-sales service also.

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Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related accessories & drilling services. With our advanced technology, high-quality equipment, rigorous testing processes, and comprehensive service network, we consistently provide professional drilling solutions to our customers. These strengths have helped establish the “JCDRILL” brand as a trusted name in the market. Currently, JCDRILL products account for 50% of the domestic market and are exported to more than 40 countries. In November 2002, we were awarded ISO9001:2000 certification.

Our manufacturing facilities, covering an area of 9,625 square meters, specialize in the production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related accessories. We employ more than 500 staff, including 26 experienced engineers from Ingersoll Rand and the former Xuanhua Mining Machinery Company. With our strong technological expertise and robust market service capabilities, we have developed both an efficient marketing system and an excellent service support system, earning the trust of customers worldwide.

Additionally, we serve as an authorized agent for mobile double-screw air compressors from Atlas Copco, Sullair, and Liutech. This allows us to offer drilling rig users high-quality, professional air compressor solutions along with reliable after-sales services.

At JCDRILL, we are committed to our strategic vision: “Survival by Quality, Development by Credit.” We strive to provide users with high-quality drilling solutions. Our after-sales service system follows a strict control framework based on ISO-9000 standards. This system ensures that technical data, problem-solving solutions, and preventive measures are provided for every maintenance project. All spare parts are sourced from new OEM products and come with installation instructions, packing lists, manufacturer documentation, qualification certificates, and warranty certificates.

We uphold the principle of “One Equipment, One Case, Endless Service”—our after-sales support begins from the moment an order is confirmed and lasts throughout the equipment’s entire operational life.