Heavy Duty Hydraulic Surface Grinding Machine
Hydraulic surface grinder delivering Ra0.63μm finish with 0.005mm parallelism accuracy.
Industrial hydraulic surface grinder engineered for mold shops and precision manufacturers requiring consistent micron-level finishes. Built with waterproof spindle seals and dedicated hydraulic valve system to maintain accuracy under continuous production loads.
Key Specs
Key Specs
Weight
Speed
Capacity
Overview Points
Large Capacity Worktable
Precision Surface Quality
Waterproof Spindle Design
Fine Feed Control
Friction Reduction System
High Rigidity Column
Shock-Free Hydraulics
Production Power Rating
Key Features
The spindle uses high-precision grouped rolling bearings, selected and pre-loaded under greenhouse conditions after strict measurement. A full waterproof labyrinth seal prevents coolant ingress, preserving bearing accuracy and extending service life — directly supporting the machine’s Ra0.63μm surface finish capability.
Longitudinal table travel is powered by a 3MPa hydraulic system with an 80L reservoir. The purpose-built grinder valve separates mechanical reversing from throttle speed control and includes an unloading function, enabling smooth table reciprocation without impact at reversal points — critical for maintaining surface quality on every pass.
Double V-shaped horizontal guide rails with resin-Teflon slide linings minimize stick-slip and dampen vibration. The column uses a large-span moment guide rail design that resists tilting forces, keeping the grinding wheel aligned to the workpiece even during heavy cuts. Net machine weight of 2,000kg contributes to overall stability.
The vertical handwheel delivers 0.01mm per graduation (1.25mm per revolution), while horizontal cross-feed adjusts between 0.01mm and 0.07mm per stroke. This range allows operators to transition from aggressive stock removal to final finishing without changing setup, reducing cycle time on precision parts.
A 5.0kW spindle motor turns the ⌀300×25×⌀75mm grinding wheel at 1,440 r/min, providing consistent peripheral speed for flat grinding of steel, cast iron, and aluminum alloys. The 420mm vertical travel accommodates tall workpieces or stacked fixtures, expanding the machine’s usable envelope.
Technical Specifications
Surface grinder is a kind of grinder. The grinding wheel is mainly used to rotate and grind the workpiece to achieve the required flatness. According to the shape of the worktable, it can be divided into rectangular worktable and round worktable. The main parameters of the rectangular worktable surface grinder are the width and length of the worktable. The main parameter of the shaped worktable is the diameter of the worktable. According to different shaft types, it can be divided into horizontal shaft and vertical shaft grinder.
| Model | MDY4080 | |||
| Work table | table size（W*L） | mm | 400*800 | |
| Max travle（W*L*H） | mm | 420*850*420 | ||
| Maximum longitudinal stroke of worktable | mm | 850 | ||
| T-slot of worktable (number of slots * width of slot) | mm | 3*14 | ||
| Grinding head | The maximum distance from the center line of the grinding wheel shaft to the working table | mm | 520 | |
| Vertical feed handwheel feed | Every turn of the handwheel | mm | 1.25 | |
| Handwheel per grid | mm | 0.01 | ||
| Horizontal feed handwheel feed | Every turn of the handwheel | mm | 2.5 | |
| Handwheel per grid | mm | 0.02 | ||
| Feed per feed | Max | mm | 0.07 | |
| Min | mm | 0.01 | ||
| Hydraulic system | Spindle motor | KW | 5.0 | |
| pressure | Mpa | 3 | ||
| Fuel tank capacity | L | 80 | ||
| Wheel shaft speed | r/min | 1440 | ||
| Grinding wheel size (outer diameter*width*inner diameter) | mm | ⊙300*25*⊙75 | ||
| Accuraacy | The parallelism of the machined surface to the base surface | mm | 300：:0.005 | |
| Surface roughness | um | Ra0.63 | ||
| Weight | Net weight | kg | 2000 | |
| Gross weight | kg | 2150 | ||
| Diameter（L*W*H） | mm | 1900*1650*2150 | ||
Applications
Mold and die surface finishing
Precision machine component manufacturing
Flat grinding of metal plates, blocks, and fixtures
Tool and cutter resharpening workshops
Automotive and motorcycle part finishing
General metalworking and fabrication shops
Video
FAQ
The key specifications of Heavy Duty Hydraulic Surface Grinding Machine include: Weight: Net weight, Speed: r/min, Capacity: L. Contact us for the full specification sheet.
Heavy Duty Hydraulic Surface Grinding Machine is widely used in: Mold and die surface finishing; Precision machine component manufacturing; Flat grinding of metal plates, blocks, and fixtures; Tool and cutter resharpening workshops.
All NTBOBO machines come with a 1-year warranty from the date of Bill of Lading. Our engineering team provides 24-hour technical support throughout the warranty period.
We accept 30% down payment by T/T (Telegraphic Transfer), with the balance due before shipment. Other payment arrangements can be discussed for long-term partners.
Standard delivery is within 10-35 working days after receiving the down payment, depending on the machine model and customization requirements.
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