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At DNT Tools, we’ve built our reputation on high-quality extraction tools — so we’ve seen what works, what fails, and what to do next.

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At DNT Tools (Dongning Tools, Ningbo, China), although we primarily manufacture high-quality tools, we also support innovations in sustainable and off-grid technologies. In this article, we explore how a hydraulic ram pump can lift water without electricity — using only the momentum of flowing water. You’ll learn the principles, the operational cycle, and see animations or visual diagrams to help you fully grasp how it works.

Bearing separators (also called bearing splitters) are specialized tools that enable non-destructive removal of bearings, sleeves, gears, and similar components

By DNT Tools · Ningbo Dongning — as a precision tool manufacturer, we design both adjustable and preset torque tools to meet diverse needs. Discover what makes each type useful and how to choose. About Us

By DNT Tools · Ningbo Dongning — professional tool manufacturer specializing in precision pliers, sockets, and automotive/industrial hand tools. Learn more: About Us.

Strong materials and precision construction are essential for cylinder liner pullers that’ll withstand demanding environments. Below are key criteria drawn from industry-leading mod

When removing cylinder liners, the right tools, clean parts, and precise technique make all the difference. Follow these OEM-backed best practices to prevent costly damage to engine blocks and liners.

Choosing the right installer is critical for a leak-free, long-lasting seal. Below we explain the most common oil seal installation tool types, when to use each, and practical tips to avoid lip damage, cocking, and rework—plus how DNT Tools can provide precision, OEM/ODM-ready solutions for your workshop.

Removing ball joints safely and efficiently requires the correct tool and process. This guide walks you through each step from vehicle setup to joint removal, with expert tips to ensure safe, damage-free suspension work.

Hydraulic pullers are indispensable in heavy-duty maintenance. They enable technicians to safely extract stubborn components with controlled force, reducing risk and downtime.

Working on live electrical systems requires certified tools. Insulated screwdrivers rated to 1000 V (IEC 60900) protect electricians against shock and arcing when used and inspected properly. Below is a practical guide on construction, testing, selection, and maintenance.

Discover high-performance repair tools for heavy-duty trucks and commercial vehicles. From engine rebuild kits to advanced diagnostics and axle service tools, we offer solutions trusted by mechanics worldwide. Meet us at CIHS 2025, Booth N3E60, to explore innovations in truck repair. Built for professionals. Ready for the road.