M250B Manual Surface Grinder

●Model: M250B; Maximum Grinding Dimensions (W×L×H): 260×580×380 mm, Table Size (W×L): 250×500 mm

●Spindle Speed: 2850 r/min; Total Motor Power: 1.54 kW, Grinding Head Motor Power: 1.5 kW

●Machining Accuracy: Parallelism of machined surface to base (300:0.01 mm), Surface Roughness: Ra0.32 μm

●Standard Accessories: Precision worktable with 1×14 mm T-slot, Grinding wheel (￠200×20×￠31.75 mm)

●Optional Attachments: Custom fixture designs, Tool selection support, Automation integration solutions

●High Machining Precision: Boasts excellent parallelism (300:0.01 mm) and superior surface finish (Ra0.32 μm) for precise grinding tasks.

●Robust Power Configuration: Equipped with a 1.5 kW grinding head motor and 1.54 kW total motor power, ensuring stable and efficient operation.

●Precise Feed Control: Features accurate handwheel feeds (vertical: 0.01 mm per division; horizontal: 0.02 mm per division) for fine adjustments.

●Durable Structure: Sturdy build with a net weight of 920 kg, paired with high-quality components (ball screws, spindle) for long-term reliability.

●Comprehensive Service & Support: One-year free warranty for all parts, 24-48 hour on-site service response, and lifelong spare parts supply.

Key Features

●High Machining Precision: Boasts excellent parallelism (300:0.01 mm) and superior surface finish (Ra0.32 μm) for precise grinding tasks.

●Robust Power Configuration: Equipped with a 1.5 kW grinding head motor and 1.54 kW total motor power, ensuring stable and efficient operation.

●Precise Feed Control: Features accurate handwheel feeds (vertical: 0.01 mm per division; horizontal: 0.02 mm per division) for fine adjustments.

●Durable Structure: Sturdy build with a net weight of 920 kg, paired with high-quality components (ball screws, spindle) for long-term reliability.

●Comprehensive Service & Support: One-year free warranty for all parts, 24-48 hour on-site service response, and lifelong spare parts supply.

Technical Specifications

Category	Specification	Unit	Value
Model	Model	–	M250B
Worktable	Table Size (Width × Length)	mm	250×500
	Maximum Grinding Dimensions (Width × Length × Height)	mm	260×580×380
	Longitudinal Travel of Worktable	mm	580
	T-slot of Worktable (Number of Slots × Slot Width)	mm	1×14
Grinding Head	Maximum Distance from Grinding Wheel Shaft Centerline to Worktable Surface	mm	500
	Vertical Feed Handwheel Feed Rate – Per Revolution	mm	1.25
	Vertical Feed Handwheel Feed Rate – Per Graduation	mm	0.01
	Horizontal Feed Handwheel Feed Rate – Per Revolution	mm	2.5
	Horizontal Feed Handwheel Feed Rate – Per Graduation	mm	0.02
	Grinding Wheel Shaft Speed	r/min	2850
	Grinding Wheel Size (Outer Diameter × Width × Inner Diameter)	mm	￠200×20×￠31.75
Machining Accuracy	Parallelism of Machined Surface to Base Surface	mm	300:0.01
	Surface Roughness	μm	Ra0.32
Machine Weight	Net Weight	kg	920
	Gross Weight	kg	970
Motor Power	Total Motor Power	kW	1.54
	Grinding Head Motor Power	kW	1.5
Overall Dimensions	Overall Dimensions (Length × Width × Height)	mm	1700×1300×1800

Category	Specification	Unit	Value
Model	Model	–	M250B
Worktable	Table Size (Width × Length)	mm	250×500
	Maximum Grinding Dimensions (Width × Length × Height)	mm	260×580×380
	Longitudinal Travel of Worktable	mm	580
	T-slot of Worktable (Number of Slots × Slot Width)	mm	1×14
Grinding Head	Maximum Distance from Grinding Wheel Shaft Centerline to Worktable Surface	mm	500
	Vertical Feed Handwheel Feed Rate – Per Revolution	mm	1.25
	Vertical Feed Handwheel Feed Rate – Per Graduation	mm	0.01
	Horizontal Feed Handwheel Feed Rate – Per Revolution	mm	2.5
	Horizontal Feed Handwheel Feed Rate – Per Graduation	mm	0.02
	Grinding Wheel Shaft Speed	r/min	2850
	Grinding Wheel Size (Outer Diameter × Width × Inner Diameter)	mm	￠200×20×￠31.75
Machining Accuracy	Parallelism of Machined Surface to Base Surface	mm	300:0.01
	Surface Roughness	μm	Ra0.32
Machine Weight	Net Weight	kg	920
	Gross Weight	kg	970
Motor Power	Total Motor Power	kW	1.54
	Grinding Head Motor Power	kW	1.5
Overall Dimensions	Overall Dimensions (Length × Width × Height)	mm	1700×1300×1800

Category	Specification	Unit	Value
Model	Model	–	M250B
Worktable	Table Size (Width × Length)	mm	250×500
	Maximum Grinding Dimensions (Width × Length × Height)	mm	260×580×380
	Longitudinal Travel of Worktable	mm	580
	T-slot of Worktable (Number of Slots × Slot Width)	mm	1×14
Grinding Head	Maximum Distance from Grinding Wheel Shaft Centerline to Worktable Surface	mm	500
	Vertical Feed Handwheel Feed Rate – Per Revolution	mm	1.25
	Vertical Feed Handwheel Feed Rate – Per Graduation	mm	0.01
	Horizontal Feed Handwheel Feed Rate – Per Revolution	mm	2.5
	Horizontal Feed Handwheel Feed Rate – Per Graduation	mm	0.02
	Grinding Wheel Shaft Speed	r/min	2850
	Grinding Wheel Size (Outer Diameter × Width × Inner Diameter)	mm	￠200×20×￠31.75
Machining Accuracy	Parallelism of Machined Surface to Base Surface	mm	300:0.01
	Surface Roughness	μm	Ra0.32
Machine Weight	Net Weight	kg	920
	Gross Weight	kg	970
Motor Power	Total Motor Power	kW	1.54
	Grinding Head Motor Power	kW	1.5
Overall Dimensions	Overall Dimensions (Length × Width × Height)	mm	1700×1300×1800

Category	Specification	Unit	Value
Model	Model	–	M250B
Worktable	Table Size (Width × Length)	mm	250×500
	Maximum Grinding Dimensions (Width × Length × Height)	mm	260×580×380
	Longitudinal Travel of Worktable	mm	580
	T-slot of Worktable (Number of Slots × Slot Width)	mm	1×14
Grinding Head	Maximum Distance from Grinding Wheel Shaft Centerline to Worktable Surface	mm	500
	Vertical Feed Handwheel Feed Rate – Per Revolution	mm	1.25
	Vertical Feed Handwheel Feed Rate – Per Graduation	mm	0.01
	Horizontal Feed Handwheel Feed Rate – Per Revolution	mm	2.5
	Horizontal Feed Handwheel Feed Rate – Per Graduation	mm	0.02
	Grinding Wheel Shaft Speed	r/min	2850
	Grinding Wheel Size (Outer Diameter × Width × Inner Diameter)	mm	￠200×20×￠31.75
Machining Accuracy	Parallelism of Machined Surface to Base Surface	mm	300:0.01
	Surface Roughness	μm	Ra0.32
Machine Weight	Net Weight	kg	920
	Gross Weight	kg	970
Motor Power	Total Motor Power	kW	1.54
	Grinding Head Motor Power	kW	1.5
Overall Dimensions	Overall Dimensions (Length × Width × Height)	mm	1700×1300×1800

Case Study

We believe the projects that we have executed speak for themselves. CITIC HIC has engineered and provided 6 AG mills of Ø12.2m×11m (28000kW gearless drive) and 6 overflow discharge ball mills of Ø7.9×13.6m (2×9000kW gear drive) for Sino Iron Project in Australia. For Zijin Mining’s Duobaoshan Copper Mine project in Heilongjiang, we have manufactured and provided SAG mills of Ø11×6.4m (2×9000kW) and overflow discharge ball mills of Ø7.9×13.6m (2×9000kW) which have been well operating currently.

Since its establishment in 2003, “Dingya Precision Machinery” has consistently adhered to the philosophy of “being based on professionalism, driven by innovation, and supported by service.” The company specializes in the research and development of machining centers, turning-milling complexes, custom-built specialized machines, and machining production lines. It continuously introduces new models and has established production bases in Yunnan, Fujian, and Jiangsu, China, to meet market demands. These efforts have earned widespread favor and acclaim from customers.

The product line of “Dingya Precision Machinery” is exported to numerous countries and regions, including Europe, the United States, Japan, South Korea, and Southeast Asia. The company is also establishing local customer service centers and service teams to provide more convenient support for clients. We look forward to your partnership, all for the sake of delivering excellent machine tools!

Brazilian Miner Vale SA

23 large-scale ball mills, Ø5.5×8.8m

Wengfu Phosphate Mine Project Phase II in Saudi Arabia (Ma'aden)

6 wet grinding rod mills, Ø4.6×6.7m

Vedanta Project in South Africa

1 SAG mill, Ø8.5×5.5m

Laos Phonesack Group's KSO Gold Mine Project (83,000t/d)

6 SAG mills, Ø8.8×4.8m

Mongolian Erdenet Mining Corporation's Copper Mine Project (20,000t/d)

SAG mill, Ø9.75×4.88m

Full-process Solution for Mineral Grinding

Why Choose CITIC HIC's Grinding Mills

High cost-effectiveness
CITIC HIC grinding mills are recognized as China’s Manufacturing Industry Single Champion Product. CITIC HIC is responsible for setting the national standards of semi-autogenous mills (SAG mills) and ball mils, supported by powerful database, optimized process technology, cutting-edge design concept, and 60 years of experience in developing and nurturing innovative technology.
High operating rate
The long life cycle of our products is based on the adoption of international standards, high-quality materials, state-of-the-art processing techniques.
Low-carbon & environmental-friendly processes
Intelligent control technology coupled with long-life wear-resistant materials results in low-carbon and eco-friendly operations.
High-efficiency service
Our service network is distributed all over the world, and our service team of seasoned professionals is reliable and willing to assist along the way. We are able to deliver quick response to customer needs and provide full life cycle support via online monitoring and diagnosing, product upgrading and continuous process improvement.