Product Overview
Available in four versatile models—M7140×16, M7140×20, M7140×25, and M7140×30—this grinder caters to diverse workpiece length requirements, ranging from 1600mm to 3000mm. Engineered with robust construction and advanced precision control, it delivers exceptional performance in terms of surface finish, parallelism, and operational stability, making it an indispensable tool for mechanical manufacturing, mold processing, and precision component production. Whether handling small-batch customization or large-scale mass production, the M7140 series combines power, accuracy, and versatility to meet the most demanding grinding needs.
Key Features
High-Precision Vertical Feeding System
Equipped with a manual vertical movement handwheel, the M7140 grinder offers an impressive precision of 0.01mm per graduation and 1mm per revolution. This ultra-fine adjustment capability ensures meticulous material removal, critical for achieving tight tolerances in precision machining tasks.
Powerful & Reliable Motor Configuration
The series features a robust motor setup, with total power ranging from 13.5Kw (M7140×16) to 17Kw (M7140×20/25/30). The spindle motor (7.5Kw to 11Kw) provides strong grinding force, while the 5.5Kw oil pump motor ensures smooth hydraulic operation. A 0.37Kw rapid lifting motor (1440r/min) enhances operational efficiency by enabling quick positioning of the grinding head.
Stable Spindle & Grinding Wheel Performance
The grinder is fitted with high-quality abrasive wheels (Φ350×40×127mm for M7140×16; Φ400×40×127mm for other models) rotating at a consistent 1440r/min. This stable speed, combined with the rigid spindle design, guarantees uniform grinding results and extended wheel lifespan, reducing maintenance costs.
Superior Workpiece Quality
With a workpiece surface parallelism of 300:0.008mm and a surface roughness of Ra:0.63μm, the M7140 delivers mirror-like finishes and precise dimensional accuracy. This level of quality meets the standards of aerospace, automotive, and mold industries where surface integrity is non-negotiable.
Versatile Worktable Sizes
The worktable (L×W×H) varies by model—1600×400×600mm to 3000×400×600mm—accommodating workpieces of different lengths. The maximum longitudinal movement (1700mm to 3100mm) and 450mm cross movement of the grinding head further expand its processing range.
Detailed Specifications
Description | Unit | M7140×16 | M7140×20 | M7140×25 | M7140×30 |
Size of worktable (L×W×H) | mm | 1600×400×600 | 2000×400×600 | 2500×400×600 | 3000×400×600 |
Max. Longitudinal movement of worktable | mm | 1700 | 2100 | 2600 | 3100 |
Max. Distance from spindle centerline to worktable surface | mm | 770 | 770 | 770 | 770 |
Max. Cross movement of grinding head | mm | 450 | 450 | 450 | 450 |
Vertical movement of grinding head (per graduation) | mm | 0.01 | 0.01 | 0.01 | 0.01 |
Vertical movement of grinding head (per revolution) | mm | 1 | 1 | 1 | 1 |
Rapid lifting motor power | Kw | 0.37 | 0.37 | 0.37 | 0.37 |
Rapid lifting motor speed | r/min | 1440 | 1440 | 1440 | 1440 |
Abrasive wheel dimension (D×d×w) | mm | Φ350×40×127 | Φ400×40×127 | Φ400×40×127 | Φ400×40×127 |
Speed of grinding wheel | r/min | 1440 | 1440 | 1440 | 1440 |
Total power of motor | Kw | 13.5 | 17 | 17 | 17 |
Power of spindle motor | Kw | 7.5 | 11 | 11 | 11 |
Power of oil pump motor | Kw | 5.5 | 5.5 | 5.5 | 5.5 |
Parallelism of workpiece surface to base level | mm | 300:0.008 | 300:0.008 | 300:0.008 | 300:0.008 |
Surface roughness | μm | Ra:0.63 | Ra:0.63 | Ra:0.63 | Ra:0.63 |
N/G weight | Kg | 5600/6200 | 6800/7200 | 7600/8200 | 8500/9100 |
Package (L×W×H) | mm | 4300×1700×2480 | 5200×1700×2480 | 6200×1700×2480 | 7500×1900×2480 |
Application Scenarios
Machinery Manufacturing Industry
Ideal for grinding flat surfaces of mechanical parts such as gears, shafts, and brackets. The M7140×30 model, with its 3000mm worktable, excels in processing long machine components, ensuring consistent precision across the entire workpiece length.
Mold & Die Processing
Delivers the high surface finish required for injection molds, stamping dies, and die-casting molds. The 0.01mm precision feeding system allows for fine-tuning, ensuring mold cavities and cores meet strict dimensional requirements.
Automotive Components Production
Suitable for grinding engine blocks, cylinder heads, and transmission parts. The robust motor configuration handles high-volume production, while the superior parallelism ensures optimal fit and function of automotive assemblies.
Construction Machinery Parts
Processes large flat surfaces of construction equipment components such as excavator arms and loader buckets. The grinder’s heavy-duty construction (up to 9100Kg gross weight) minimizes vibration during grinding, ensuring stability for large workpieces.
FAQ
What is the maximum workpiece length the M7140 series can handle?
The M7140×30 model supports workpieces up to 3000mm in length, with a maximum longitudinal worktable movement of 3100mm, providing ample space for long workpieces.
How precise is the vertical adjustment of the grinding head?
The vertical movement offers 0.01mm per graduation, allowing for ultra-fine material removal and precise control over workpiece thickness.
What type of abrasive wheel is compatible with the M7140 grinder?
The standard abrasive wheel dimension is Φ350×40×127mm (M7140×16) or Φ400×40×127mm (other models). We recommend using high-quality aluminum oxide or silicon carbide wheels for optimal performance.
Is the M7140 suitable for heavy-duty grinding tasks?
Yes. With a total motor power of up to 17Kw and a rigid frame design, the M7140 efficiently handles heavy-duty grinding of high-hardness materials such as steel and cast iron.
Call to Action
Ready to elevate your precision grinding capabilities with the M7140 Head Movable Surface Grinder? Whether you need the compact M7140×16 or the large-format M7140×30, we’ve got you covered. Click Inquire to get a custom quotation tailored to your needs, or Add to Basket to secure your grinder today. For technical support or to learn more about model selection, contact our expert team—we’re here to help you optimize your machining process!
