H250 High precision CNC cylindrical grinding

Technical Data

Items		Unit	Machine model：H250
	Maximum Swing Diameter	mm	250
	Maximum distance between two thimbles	mm(in)	500
	Maximum lapping diameter	mm(in)	250
Processing capability	Maximum load between the centers	Kg(b)	40(centre works)/
			20（only work head）
	Grinding wheel size (diameter × width × aperture)	mm(in)	405×32~50×127
	Grinding wheel speed	rpm	1570
	Maximum linear velocity of grinding wheel	m/s	35
Wheelhead	Grinding wheel dressing	mm(in)	Automatic
	X axis minimum feed	mm(in)	0.001
	Feed Angle	Deg	90
	Feed travel	mm	270
	The X-axis fast moving speed	mm/min	0-10000
Headstock	Spindle speed	rpm	10-650
	Spindle form		Synchrony or centering
	Thimble specifications		MT-4
Tailstock	Automatic telescopic distance (hydraulic type)	mm	40
	Thimble specifications		MT-4
	Operation mode		Manual
Workbench	Z axis fast moving speed	mm/min	0-20000
	Z axis minimum feed	mm	0.001
	Maximum travel stroke	mm	550
	Rotation angle	Deg	+6/-9
Motor	Wheel spindle motor	KW	3.75
	X axis feed motor (servo)	KW	2.2
	Z axis feed motor (servo)	KW	2.2
	Headstock spindle motor	KW	0.37
	Cooling water pump motor	KW	0.75
	Lubricating oil motor	KW	1/4*2
	Tail seat oil pump motor (special)	KW	0.75
Others	X/Z axis guide/screw lubrication oil		MOBIL#1409 or ISO VG68 class oil
	Machine net weight	Kg	About 3500
	Machine gross weight	Kg	About 3800
	Package size（L*W*H）	mm	2900*2600*1750

 Product Introduction

1) Take use of Siemens 808D CNC CNC system, grinding special friendly man-machine interface, no programming, processing program automatically generated.

2) Equipped with high-precision bearing-type grinding wheel spindle and precision-ground ball screw.

3) Two-axis servo drive automatic feed, automatic dressing of the grinding wheel, can meet the shaping and dressing of various steps, arcs, and curved surfaces, and the system automatically compensates.

4) All sliding surfaces, contact surfaces and guide rail surfaces adopt manual grind and shovel technology to ensure the high precision and long-term stability of the machine.

5) All sliding surfaces, contact surfaces and guide rail surfaces adopt manual grind and shovel technology to ensure the high precision and long-term stability of the machine.

6)The machine castings are strictly selected FC25 high-grade cast iron, and the aging treatment ensures that the basic components of the machine tool are not deformed.

Product features:

1. The machine tool control system is the German Siemens 808DCNC CNC system, which is a special man-machine interface for grinding developed by Siemens. The operation is simple and easy to learn, and the processing program is automatically generated without manual programming.

2. The grinding wheel spindle is the bearing spindle of the Taiwanese brand, and the whole is imported from Taiwan, with strong grinding force, high rotation accuracy and excellent stability.

3. The taper of the work-piece head-stock spindle is (MT#4), and the head stock motor can be continuously variable. This spindle can be a movable and fixed dual-purpose structure.

4. The taper of the tail stock spindle is (MT#4), manual operation.

5. Both X-axis and Z-axis servo motors use Siemens high-inertia servo motors.

6. Electrical accessories: relays, contactors, switch buttons are all Japanese “Fuji” brand.

7. Both the X-axis and Z-axis feed screws use Japanese THK grinding grade ball screws.

8. Both the grinding wheel motor and the head stock motor use Taiwan TECO Motor.

9. The coupling uses the Japanese NBK brand.

10. The standard grinding wheel flange (5″) of the machine tool is a set of Taiwan’s Miqi brand.

11. The standard grinding wheel of the machine tool is a piece of Norton brand (405.40.127).

12. The standard configuration of the machine tool is a half-shielded waterproof sheet metal (front-mounted sliding glass door splash cover).

13. The machine tool electrical control box is equipped with industrial refrigeration and air-conditioning, and three-color intelligent warning lights.

14. The machine tool body and important castings are processed with advanced machining equipment such as YASDA, ELB, SIP, etc. to ensure the high precision of the basic components of the machine tool.

15. All sliding surfaces, contact surfaces and track surfaces adopt manual shoveling technology to ensure the high precision and long-term stability of the machine.

16. The machine tool castings are strictly selected FC-25 high-grade cast iron.

Advantages:

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