Working Principles of Hydrostatics

• External pressurized oil supply: The hydraulic system pressurizes the hydraulic oil and actively pumps it into the oil pockets between the bearing housing and the spindle (or slide rail).
• Establishing a uniform load-bearing oil film: The oil fills the grooves, and its flow is regulated by a restrictor valve, creating a stable and uniform high-pressure oil layer between the surfaces of the two moving objects.
• Achieving a contactless suspended state: The static pressure of the fluid directly offsets external gravity and loads, allowing the machine parts to suspend stably so that the metal surfaces on both sides are completely separated and do not collide.
• Zero contact wear during startup and shutdown: Under the protective barrier of the oil film, the equipment can maintain smooth operation even at the exact moment it starts or stops, eliminating metal-to-metal dry friction and initial wear.

What Products Use Hydrostatic Technology?

Hydrostatic technology can be applied in grinding machines, wafer thinning machines, and turn-mill Multitasking Machines. In the past, a common pain point for operators of these machines was that the equipment they relied on was prone to thermal deformation caused by friction-induced temperature rise. This resulted in unstable workpiece dimensions, making it difficult to maintain high yield rates in mass production. Furthermore, the equipment was prone to metal-to-metal dry friction and abnormal noises during the moments of startup and shutdown. Over time, long-term bearing wear not only led to a loss of precision but also increased the maintenance burden of frequent shutdowns for fine-tuning.

This is where hydrostatics comes in. By achieving contactless support for the spindle and slide rails through a high-pressure oil film, it can significantly eliminate mechanical friction and suppress thermal deformation. This technology ensures that the equipment maintains stable machining accuracy and mass production yields even under long periods of continuous operation, while also significantly extending the machine's lifespan.

In the next article, let's take a look at the relationship between hydraulic pumps and hydrostatics!