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chinese spindle 3kw, 1.cheap and good performance, 2.siutable for cnc ruter, 3.with CE - details see: https://www.machineto.com/spindle-motor-for-cnc-price-10154627

Tips before using: for all spindles
1	The electric spindle and the frequency inverter shall be suitable with each other. The specifications and parameter settings of the inverter shall match the nominal parameters of the spindle, and it will burn the spindle if the settings are not correct.
2	Before using water-cooling spindle, it shall ensure that cooling cycle system works normally and the running under no cooling conditions is prohibited. The volume of cooling water is calculated as per 1 liter/kw, minute, the minimum flow of cooling water is not less than 5 liter/minute, cooling water pipe and the nozzle shall be connected reliably and there is no leakage.
3	The cooling liquid shall be clean and free of grease and the temperature shall be within 5-30°C. The cooling medium shall carry out force cooling when the ambient temperature is higher than 30°C. The precision lathe requires the cooling liquid with a constant temperature of 20±2°C.
4	During storage and transport of the spindle, the status of high-speed grease inside the bearing will change. The user shall run it at a low speed first by starting from the lowest speed of the spindle for 30 minutes and then 20 minutes for every 3000 rounds; otherwise there will have abnormal sound, noise, heat and other phenomena, which will affect the bearing life if the spindle is started directly at a high speed. During long term storage, the spindle shall run (at low speed) for 15~30 minutes once a week at least.
5	Collet, nut and inner taper hole shall be washed clean when installing blades on the spindle in order to avoid any impact on the precision. The blade handle shall be inserted into the collet more than 15mm.
6	For daily machining, the spindle shall be warmed up, run for 15~20 minutes when the machining speed is reached and then performs precise machining. It is better to stop the spindle for two hours every day in order to recover its mechanical fatigue and prolong its life time.
7	No knocking the end cover of the spindle. No hammering the collet and blade head when removing blades. No shocking or colliding during transport, storage and using, especially the end of the spindle.
8	The spindle shall run in designated direction.
9	The spindle shall be installed and fixed according to the relevant drawings and instructions.
10	The temperature shall be within 22-25°C if water cooling machine is used.
11	The spindle adopts vapor lock and the gas source shall not be used until it has passed oil-water separator and dry filter. The air pressure is 0.2-0.25MPa and the filtering precision is 5μm, otherwise there will cause damages to the bearing.

Model	Power	OD*Length	Collet	Frequence	Voltage	Speed
Water Cooling Spindle
DW-62A	800W	62*200mm	ER11	400Hz	220V	24000rpm
DW-65C	800W	65*205mm	ER11	400Hz	220V	24000rpm
DW-80A	1500W	80*185mm	ER11	400Hz	220V	24000rpm
DW-80B	2200W	80*205mm	ER20	400Hz	220V/380V	24000rpm
DW-80C	2200W	80*215mm	ER20	400Hz	220V	24000rpm
DW-80D	1500W	80*185mm	ER16	400Hz	220V	24000rpm
DW-80E	1500W	80*215mm	ER11	400Hz	220V	24000rpm
DW-80F	1500W	80*215mm	ER16	400Hz	220V	24000rpm
DW-80G	2200W	80*215mm	ER16	400Hz	220V	24000rpm
DW-80H	2200W	80*223mm	ER20	400Hz	220V	24000rpm
DW-M80A	1500W	80*237mm	ER16	400Hz	220V	24000rpm
DW-100A	3000W	100*252mm	ER20	400Hz	220V/380V	24000rpm
DW-100B	2200W	100*228mm	ER20	400Hz	220V/380V	24000rpm
DW-100C	3000W	100*271mm	ER20	400Hz	220V/380V	24000rpm
DW-105A	3500W	105*271mm	ER20	400Hz	220V/380V	24000rpm
DW-105B	3500W	105*252mm	ER20	400Hz	220V/380V	24000rpm
DW-125A	4500W	125*320mm	ER25	330Hz	380V	20000rpm
DW-125B	4500W	125*332mm	ER25	330Hz	380V	20000rpm
DW-M85A	2200W	85*288mm	ER20	400Hz	380V	24000rpm
DW-80J	2200W	80*230mm	ER20	400Hz	220V	24000rpm
DW-80K	2200W	80*225mm	ER20	400Hz	220V	24000rpm
DW-80L	2200W	80*232mm	ER20	400Hz	220V	12000rpm
Air Cooling Spindle
DW-80A	1500W	80*220mm	ER11	400Hz	220V	24000rpm
DW-3.5KW	3500W	94*82*312	ER25	300Hz	380V	18000rpm
DW-4.5KW	4500W	120*103*302	ER32	300Hz	380V	18000rpm
DW-65A	800W	65*206mm	ER11	400Hz	220V	24000rpm