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YH2M8426A high precision vertical double side lapping (polishing) machine

The machine is used for metal parts such as valve plates, valve plates, friction plates, rigid sealing rings, cylinder piston rings, oil pump blades, etc., as well as silicon, germanium, quartz crystal, glass, ceramics, sapphire, carbon arsenide, ferrite, Lithium niobate and other non-metallic hard and brittle materials.


Precision grinding, intelligent manufacturing technology, integrated solutions


Typical Machining Parts

Typical Machining Parts

The equipment can process workpieces including valve plate, valve plate, friction plate, rigid sealing ring, cylinder piston ring, oil pump blade, silicon, germanium, quartz crystal, glass, ceramic, sapphire, carbon arsenide, ferrite, lithium niobate, etc., such:







Valve plate

Piston ring

Glass cover plate

Sealing plate

sapphire wafer

Equipment Highlights

Equipment Highlights

(1) This machine belongs to the grinding machine of the motion principle of 4 planetary gear trains.

(2) The weight of the pallet of this machine falls into the bottom plate through the hollow shaft, the fixed sleeve, the pair of tapered bearings and the three supporting feet, which can ensure the extremely high pallet end jump.

(3) The ring gear, the lower grinding disc, the upper disc and the sun gear each use a reducer. The axis and transmission axis of each reducer are well regulated by frequency converter, and the starting and stopping are stable and without impact.

(4) When the machine tool is working, the machine can edit 100 programs by editing the processing program on the man-machine interface.

(5) The machine is equipped with a pressure detection mechanism for pressurized grinding of the workpiece, which automatically detects the current pressure of the workpiece.

(6) This machine is equipped with a safety self-locking cylinder. When the upper grinding disc rises to the upper limit point, the hook plate is hung to prevent the upper grinding disc from falling and ensure the safety of the operator and equipment.

(7) PLC control, flexible and reliable control mode.

(8) Use the touch screen as the man-machine interface to display the real-time information of the alarm and machine tool status; the interface is friendly and the amount of information is large.

* Note: Pressure detection system is optional.

Technical parameters

Technical parameters



Size of upper and lower grinding discs (outer diameter x inner diameter x thickness)(mm)

φ933xφ 358x45

Planetary wheel specifications

DP = 12 Z = 147

Number of planet wheels n

3 ≤ n≤ 6

Maximum size of workpiece (mm)

260 (rectangular diagonal 260mm)

Minimum thickness dimension of machined parts (mm)


Precision of machined parts (mm)


Dimensional accuracy of workpiece thickness (mm)


Machined surface roughness of the workpiece

No more than Ra0.15μm Polishing parts Ra0.125μm

Lower grinding disc speed (rpm)

10-60 (stepless speed regulation)

Upper grinding disc speed (rpm)

3-16 (stepless speed regulation)

Sun gear speed (rpm)

3-30 (stepless speed regulation)

Gear ring speed (rpm)

3-30 (stepless speed regulation)

Overall dimension (approx.: length x width x height)(mm)

1620 × 1350 × 2650

Overall weight (approx.)(Kg)


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Keywords: CNC grinding machine series, grinding and polishing machine series, intelligent equipment, metallurgical energy equipment
Functional parts