Manual Huvema HU 460 X 1500 VAC (page 21 of 60) (English)

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CHANG E S AND T YPI N G ERRORS RESERVED

11. mainTenance & serVicinG

For a better acknowledgement to this lathe, either in operation or some simple way of trouble-shooting or servicing,

to bring the machine to the utmost function, we are now stating some important points as below.

11.1 headsTock

• Prevent from oil leakage from top cover of Headstock: Before covering the top cover of Headstock, whenever it

is removed, please wipe to clean the contact surface and apply some grease on it. Make sure it is tightly securing

by setscrews.

• Prevent from blocking up the oil circuit: The leakage of front headstock cover mostly caused by over-filling the

oil or a block-up of oil circuit. In this moment, remove the Headstock cover first, then blow the air jet into two oil

circuit hole, which is on up side and down side of front Spindle bearing, in the same time to rotate the Spindle

and it will work again.

11.1.1 adjUsTmenT on spindle bearinG:

The front and the intermediate section of

spindle roller bearing. For high accuracy

and to meet the request of operation

function, you may be asked to adjust the

appropriate pressure on bearing. After a

long period of operation, nut “G” probably

will get loose and result the “wave trace”

on cutting surface. You need to adjust it

at this moment. Use a hexagon socket

wrench to remove the setscrew and install

back with the fixing nut again properly.

Only an appropriate pressure is enough.

Never have it too tight, as it will lead to

the bearing to over-heated or damage the

rolling surface of bearing and lessen its

dynamics. Make sure to fix the setscrew

completely after adjustment as illustrated.

11.2 apron & saddle

• Filler hole location of Apron: On the right platform of Saddle. The filler hole

has oil plug indicates “OIL”.

• Drainer Hole location of Apron: On the bottom cover of Apron, as illustrated

left, position “A” (also can be seen in front side of Apron downward)

• Model No of Apron lubricant & change period Model No is way oil. ISO UG

68, suggestion changing period is every half a year.

• Adjustment for the loosely Half Nut Engaged Lever: After long period of

operation, the Half Nut Engaged Lever will get loose, please adjust as per following steps:

a. Remover Thread Dial Indicator, there is four adjustment screws can be seen.

b. Adjust those four screws to proper pressure as soon as to push the lever.

c. Install Thread Dial Indicator back.

• Feed load adjustment (cross feed & longitudinal feed):

There is a conical clutch “D” in the middle of Apron

which is an overload protector device. The capacity

of safety load is about 12 kg. Appropriate load can be

adjusted by a hexagon socket screw in the middle of

apron. Turn clockwise to increase load; anti-clockwise

it decrease. A proper load capacity can be tested by

pressing hand-wheel handle while auto feed operates

to see if it wills automatically cut-off when load is over

12 kg.

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Huvema HU 460 X 1500 VAC Manual

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