Hydrolap Expert 170 (Lapping Machine)

Hydrolap Expert 170 is a professional lapping machine designed for precise surface finishing of metal components. It is widely used in the refurbishment of hydraulic pump parts, where even microscopic scratches can lead to pressure loss, noise, overheating or internal leakage. The machine removes micron-level layers of material, restoring perfect flatness and smoothness required for proper sealing and efficient operation.

The device uses a counter-rotating movement of the lapping plate and the working rings, ensuring uniform material removal and a stable abrasive film. Smooth speed control, an integrated timer, and an automatic abrasive feed system make the process fully repeatable and predictable.

Hydrolap Expert 170 allows lapping of three parts simultaneously, provided they are similar in shape and mass. Its heavy-duty construction (294 kg), ergonomic design and intuitive control panel ensure stability and safe operation in workshop environments.

Key features

• 465 mm lapping plate diameter

• maximum component diameter: 170 mm

• smooth rotation speed adjustment

• work cycle timer

• abrasive feed system with electric pump and dispensing nozzle

• ability to process three workpieces at once

• integrated accessories drawer

• 0.75 kW main plate motor

• 0.12 kW abrasive pump motor

• total machine weight: 294 kg

Applications

Suitable for refurbishing:

• control plates of hydraulic pumps

• sealing surfaces and metal flat faces

• discs, pads and working groups

• precision components requiring perfect flatness

Lapping restores surface accuracy, improves sealing performance and reduces the need for purchasing new costly parts.

Operating principle

• the lapping plate rotates in one direction,

• the working rings rotate counter-directionally,

• the abrasive suspension forms a thin working film providing cooling and controlled material removal,

• the operator sets rotation speed and working time, while the machine performs the process automatically.

This configuration ensures high accuracy, repeatability and a uniform surface finish.

Control panel

The machine is equipped with a clear and functional control panel including:

• main power switch,

• START/STOP buttons,

• rotation speed regulator,

• RPM display,

• work timer,

• abrasive feed activation and adjustment.

Included with the machine

• lapping machine

• operating manual

• abrasive suspension – 5 L

• pressing inserts for securing workpieces – 3 pcs

• compensating felt pads – 3 pcs

• guiding/conditioning rings – 3 pcs

Benefits

• restores surface quality without replacing expensive parts

• highly repeatable results compared to manual lapping

• lower repair costs and reduced downtime

• precise surface finishing for components with very tight tolerances

• smooth, uniform, high-quality surface finish