Huvema HU 16 N Industry Service manual

11035 - HU 16 N Industry
11036 - HU 20 Industry
11037 - HU 25F Industry
11038 - HU 32F Industry
Drilling Machines
Industrial Drilling Machines
Read, understand and follow instructions in the Operating Instructions and Parts Manual
which was shipped with your machine.

1
Content
1. Warnings..................................................................................................................................................................2
Machinery General Safety Warnings ...........................................................................................................................2
2. Description...............................................................................................................................................................2
3. General Specifications .............................................................................................................................................3
4. Product Features and Terminology..........................................................................................................................5
5. Description...............................................................................................................................................................6
5.1. Control Panel ................................................................................................................................................6
5.2. The Work Table .............................................................................................................................................6
5.3. The Machine Head........................................................................................................................................6
6. Operation.................................................................................................................................................................7
6.1. Depth adjustment .........................................................................................................................................7
6.2. ON .................................................................................................................................................................7
6.3. Speed adjustment.........................................................................................................................................7
6.4. The Chuck Guard...........................................................................................................................................8
6.5. Tool installation and Uninstallation ..............................................................................................................8
7. Transporting the Machine........................................................................................................................................9
7.1. Transporting the Machine.............................................................................................................................9
7.2. Machine Installation .....................................................................................................................................9
7.2.1. Positioning the Machine ....................................................................................................................9
7.2.2. Anchoring the Machine .................................................................................................................. 10
7.2.3. Minimum Requirement for Housing the Machine.......................................................................... 10
7.2.4. Assembling Loose Parts .................................................................................................................. 10
7.2.5. Electrical Connection of the Machine............................................................................................. 10
7.3. Maintenance
.............................................................................................................................................. 10
7.3.1. Daily Maintenance .......................................................................................................................... 10
7.3.2. Weekly Maintenance ...................................................................................................................... 10
7.3.3. Monthly Maintenance .................................................................................................................... 10
7.3.4. Annual Maintenance....................................................................................................................... 10
7.3.5. Clean and Lubrication ..................................................................................................................... 10
7.3.6. Oil Disposal ..................................................................................................................................... 10
7.3.7. Special Maintenance....................................................................................................................... 10
8. Operating Precautions .......................................................................................................................................... 11
9. Trouble Shooting................................................................................................................................................... 12
10. Wiring Diagrams ................................................................................................................................................. 13
11. Accessories Party List.......................................................................................................................................... 17

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1. Warnings!Make sure the machine
is grounded before use!
-Misuse of this machine can cause serious injury.
-For safety, machine must be set up, used
and serviced properly.
-Read, understand and follow instructions
in the Operating Instructions and Parts Manual
which was shipped with your machine.
When setting up machine:
-Always avoid using machine in damp or poorly
lighted work areas.
-Always be sure the machine support is securely
anchored to the floor or the work bench.
When using machine:
-Always wear safety glasses with side shields
-Never wear loose clothing or jewelry.
-Never overreach—you may slip and fall.
When servicing machine:
-Always disconnect the machine from
its electrical supply while servicing.
-Always follow instructions in Operating
Instructions and Parts Manual when
changing accessory tools or parts.
-Never modify the machine without
Consulting TMT
Read and follow these simple rules for best results and
full benefits from your machine. Used properly, TMT
machinery is among the best in design and safety.
However, any machine used improperly can be rendered
inefficient and unsafe. It is absolutely mandatory that
those who use our products be properly trained in how to
use them correctly. They should read and understand the
Operating Instructions and Parts Manual as well as all
labels affixed to the machine. Failure in following all of
these warnings can cause serious injuries.
Machinery General Safety Warnings
Always wear protective eye wear when operating
machinery. Eye wear shall be impact resistant,
protective safety glasses with side shields which
comply with ANSI Z87.1 specifications. Use of eye
wear which does not comply with ANSI Z87.1
specifications could result in severe injury from
breakage of eye protection.
Wear proper apparel. No loose clothing or jewelry
which can get caught in moving parts. Rubber soled
footwear is recommended for best footing.
Do not overreach. Failure to maintain proper
working position can cause you to fall into the
machine or cause your clothing to get caught,
pulling you into the machine.
Keep guards in place and in proper working order.
Do not operate the machine with guards removed.
Avoid dangerous working environments. Do not use
stationary machine tools in wet or damp locations.
Keep work areas clean and well lit.
Avoid accidental starts by being sure the start switch
is "OFF" before plugging in the machine.
Never leave the machine running while unattended.
Machine shall be shut off whenever it is not in
operation.
Disconnect electrical power before servicing.
Whenever changing accessories or general
maintenance is done on the machine, electrical
power to the machine must be disconnected before
work is done.
Maintain all machine tools with care. Follow all
maintenance instructions for lubricating and the
changing of accessories. No attempt shall be made
to modify or have makeshift repairs done to the
machine. This not only voids the warranty but also
renders the machine unsafe.
Machinery must be anchored to the floor.
Secure work. Use clamps or a vise to hold work,
when practical. It is safer than using your hands and
it frees both hands to operate the machine.
Keep work area clean. Cluttered areas invite
accidents.
Use the right tool. Don't force a tool or attachment to
do a job for which it was not designed.
Use only recommended accessories and follow
manufacturer's instructions pertaining to them.
Keep hands in sight and clear of all moving parts and
cutting surfaces.
All visitors should be kept at a safe distance from the
work area.
Know the tool you are using — its application,
limitations, and potential hazards.
2. Description
Read the safety warnings ,then get to know the machine
features and terminology
Always wear the protective eye wear
Proper Usage of Machine
as below:
Don’t overwork
The machine operator must receive training and
follow this manual
Read this manual carefully and all safety
instructions of the machine

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11035 11036 11037 11038
16mm 20mm 25mm 32mm
B16 1-16mm B16 1-16mm B16 1-16mm B16 1-16mm
70mm 70mm 80mm 98mm
80mm 100mm 100mm 135mm
360mm 410mm 410mm 510mm
340mm 300mm 850mm 860mm
570mm 540mm 1160mm 1200mm
± 45 ° ± 45 ° n/a n/a
B16 MT2 MT2 MT3
Ø70mm /
Cast iron
Ø70mm /
Cast iron
Ø80mm / Steel
tube
Ø98mm / Steel
tube
5 5 5 5
Cast iron Cast iron Cast iron Cast iron
200-2350 RPM 200-2350 RPM 200-2350 RPM 200-2250 RPM
267×230mm 283X248mm 320X320mm 410X380mm
490×310mm 520mm×345mm 600X385mm 650X440mm
Cast iron Cast iron Cast iron Cast iron
Cast iron Cast iron Cast iron Cast iron
76kg 96kg 115kg 210kg
1000mm 1010mm 1630mm 1770mm
HU 16 N Industry
Type HU 20 Industry HU 25F Industry HU 32F Industry
3. General Specifications（一）
Drilling Capacity
Chuck Size
Column
Diameter
Spindle Travel
Swing
Distance
Spindle to Table
Distance
Spindle to Base
Table Tilt
Spindle Taper
Column
Diameter
Number of
Spindle Speeds
Pulleys Material
Range of
Spindle Speeds
Work Table Size
Base Size
Table/Base
Material
Head Stock
Material
Net Weight
Height of
Machine

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General Atmosphere Photos

5
4. Product Features and Terminology
Pulley Cover
Motor
Handle
Column Lock Handle
Mounting Slots
Control Panel
Chuck guard
Slide Bar Knob
Work Table
Base
Crank Handle

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5. Description
Note:our industrial Drilling Tapping Machine with high
quality and high precision. The ZS series can drilling &
Tapping.
5.1. Control Panel
A. Power ON Switch: Starts the motor.
B. Power OFF Switch: Stops the motor.
C. Emergency Stop Switch: Stops the machine. Turn the
switch clockwise to unlock the switch before starting the
machine.
D. Drilling/Tapping Selector: Selects the mode of operation
E. Indicating lamp of Spindle Reversing: light on when
spindle reversing.
After daily use, disconnect machine from power source or
press emergency stop switch to shut off the power
completely. Do not keep the machine connected over 24
hours, it may cause damage to the machine.
5.2. The Work Table
（1）Adjust the work table height
The table can be raised, lowered, and tilted with desired angles
to accommodate the work piece.
To raise or lower the table, loosen the lever-locks behind the
table bracket, then use the hand crank to move the table to the
desired height. Then lock the table in position.
（2）Adjust the work table tilting
Note: Only the work table of B type has tilting function.
To tilt the table, loosen the nut first to adjust the table to
desired angle, then lock the table in position.
5.3. The Machine Head
Note: Only B type has headstock height adjusting
function.
ICut off the power before this operation.

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II If the machinery object is out of loading ability
of work table, it can be set on the base. Then adjust the
headstock height along the column to make sure the
working range of machinery be proper.
III Please make sure the handle (H) is tightened.
IV Loose the tightening bolt (F) first, and adjust
the retaining ring (G) to preferred height, then go tighten
the bolt again.
VCarefully loose the handle (H) to let the
headstock slowly come down to be against the retaining
ring, then tightened the handle (H) again.
If the headstock need to be at higher position, please
carefully lift it up because the severe heaviness after
loosing the locking handle (H). And make sure the
retaining ring (G) be settled to be aginst the headstock
properly.
6. Operation
6.1. Depth adjustment
A drilling depth indicator is provided on the side of
the drill head. The lock knob is provided at the side,
on the top of quill lever.
Before starting the motor:
ISet the depth to zero by lowering and holding the
cutting tools to the surface of the work piece. Use quill
lever to lower the spindle.
II Set the depth stop by rotating the depth stop stud
to the desired depth.
III Lock the depth scale by turning the lock knob.
6.2. ON
Safety chuck guard must be in position, electric box must be
closed and locked, and unlock emergency stop switch by
turning the red cap of the switch clockwise to start machine. In a
critical condition, stop machine by hitting emergency stop
switch or Power OFF switch to stop machine.
Check if the head is secured.
Failure to secure the head can result in damage of the
machine and personal injury.
6.3. Speed adjustment
Cut off the power before this operation.
ICut off the power before this operation.
II Open the pulley cover.
III Loosen “I” and “J” to free the motor.
IV Change the belts location according the speed
Scale ring Lock handle assembly

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chart.
VManually push/pull out the motor along the
motor rods then thread the bolts (J) to be against the
motor bracket letting the belt be tensioned.
VI Close the pulley cover
Note: Belt tension should be loose enough to
allow 5-10mm movement when pushing the belt from the
side.
6.4. The Chuck Guard
This clear plastic shield should be use whenever
conducting a drilling or tapping operation. Clean the safety
guard periodically to provide a clear view of the work piece.
Adjustments can be done as follows.
Adjust the internal cover shield to have better range
protection.
If both internal and external shields cannot provide
enough protection, loosen locking bolt (M) to shift
setting ring (N) in proper position.
Note: make sure the bolt (M) aligning to the groove
(aimed by the arrow), otherwise the power-off switch
would not be triggered when the shields being opened.
6.5. Tool installation and Uninstallation
IClean the drill chuck, arbor and spindle taper
thoroughly before installation. Any insufficient cleaning on
mating surfaces may cause drill loosen as operating and unsafe
conditions.

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II Place a thin wood plank on the worktable to protect
the surface of the worktable and chuck drill. Draw back the
chuck nose into chuck body and slightly hit the arbor onto the
chuck by rubber hammer.
III Slide the assembled drill chuck and arbor into spindle
taper, and slightly hit them by rubber hammer to fit in.
IV Sequentially tighten”K” and ”L”
I. Loose the Nut
II. Lower the spindle about 100 mm.
III. Place the drift key into the aperture of the quill and tap the
end of the drift key with a hammer until the bit or chuck
arbor falls down.
7. Transporting the Machine
7.1. Transporting the Machine
The machine will be delivered in a closed crate.
For transport use a forklift or hoist. Make sure the machine does
not tip or fall off during transport.
Danger of tipping due to high gravity center!
During handling, the machine shall be lifted only in vertical
direction.
Please refer to instruction manual in specification and machine
weight to arrange handling manner. Be sure to use capable fork -
lifter or hoist to lift of machine. The handling and transportation
shall be carried out by qualified persons. Fork - lift or hoist can
be used in handling and shall be operated by qualified driver.
Before handling, make sure all movable parts are secured in
their position and all movable accessories should be removed
from machine. The steel rope should average pull the machine
head, table and column tightly.
Keep all the processes in a carefully and slightly condition.
Bump or crash are strictly prohibited. It will cause precision
shift and electronic controller damaged.
7.2. Machine Installation
7.2.1.Positioning the Machine
The head and the worktable of the machine can be rotated

1
360°, so choose a location with enough space and solid
foundation.
Clean all rust protected surfaces with a mild solvent e.g.
petroleum.
7.2.2.Anchoring the Machine
Assure the sufficient load capacity and proper
condition of your lifting devices.
●Position the machine on a firm and level
concrete floor.
●A minimum distance of 800mm towards a rear
wall must be kept (for access to the electrical box).
●Anchor the machine to the ground, as shown
in the diagram, using screws and expansion plugs or
sunken tie rods that connect through holes in the
base.
7.2.3.Minimum Requirement for Housing the Machine
Please comply with the following terms to
maximize the life and performance of the machine and its
components.
I. The Main voltage and frequency complying with the
requirements for the machine's motor.
II. Environment temperature from -10°C to +50°C.
III. Relative humidity not over 90%.
7.2.4.Assembling Loose Parts
Attach Riser handle to the necessary crankshaft, and use
Hex-wrench to tighten/loosen the machine head lock nut.
7.2.5.Electrical Connection of the Machine
If the machine cannot be operated after wires have been
connected, please check the following items:
I. Is the Emergency switch released?
II. Is the door of the electrical cabinet is properly
closed and switched ON (locked) position?
III. Is the safety guard in the proper position (closed)?
7.3. Maintenance
7.3.1.Daily Maintenance
Make a general cleaning by removing dust and
shavings from the machine.
Check that the shields and emergency stops are in
good working order.
After daily use, disconnect machine from power
source. Do not keep the machine connected over 24 hours,
it may cause damage to the machine.
7.3.2.Weekly Maintenance
Clean the machine
7.3.3.Monthly Maintenance
Lubricate machine column, spindle and rack devices.
Check that all screws on the motor, the pump and the
guard are tight and secure on the right position.
7.3.4.Annual Maintenance
Replace the driving belt
Oils for Lubricating Coolant
Considering the vast range of products in the market,
the user can choose the one most suited to their own
requirements, using as reference the type shell lutem oil
eco.
The minimum percentage of oil diluted in water is
8~10%.
7.3.5.Clean and Lubrication
Clean all parts and lubricate them.
7.3.6.Oil Disposal
Oil products must be disposed in a proper manner
following local regulations.
7.3.7.Special Maintenance
Special maintenance operations must be carried out
by skilled personnel. However, we advise contacting
dealer and/or importer the term special maintenance also
covers the resetting of protection and safety equipment
and devices.

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8. Operating Precautions
The following operating and safety precautions must
be observed in order to avoid harm to the operator or
damage to the drill press.
Make sure the power voltage is for the machine.
Before connecting the plug to socket, it is necessary
to check the power spec. to avoid any damage
occurring.
If the machine is not used for a long time, the
plug should be disconnected.
Never put the power cable near the fire or
water environment, to break or press the power
cable is not allowed.
The head assembly must be locked to the
column so the thrust produced by drilling will not
force the head assembly up the column.
The work table must be locked to the column
so it will not be forced down the column.
Before drilling, release the quill lock nut to
permit free travel of the quill.
Be sure the belt is tightened to the proper
tension.
Do not start to drill the work piece until
making certain the work piece is held down
securely.
Make sure the power being off when changing
the belt for shifting speed.
Point of operation protection is required for
maximum safety. This remains the responsibility of
the user/purchaser since conditions differ between
jobs.
Make sure the drill is secured in the spindle or
chuck before attempting to use the drill press.
Make sure the spindle taper is clean and free of
burrs, scoring, and galling to assure maximum
gripping.
Lock the quill in position when using any
side-loaded tool.

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9. Trouble Shooting
Trouble Probable Remedy
Spindle does not turn
Cause by chuck guard adjustment.Please refer section 7.6
Defective switch.Replace switch.
Broken drive belt.Replace drive belt.
Spindle noisy
Damaged spindle bearings.Replace spindle.
Worn spline.Replace spine.
Drill stalls
Worn drive belt.Check condition of belt.
Excessive feed rate for size of drill and material
being drilled. No cutting fluid or improper
cutting fluid.
Reduce feed pressure or use cutting fluid. Use
correct cutting fluid.
Poorly drilled holes
Drill dull. Sharpen drill.
Lack of rigidity in hold-down method.Check that all T-slot hold-
downs are tight and
that table-lock and drill head bolts are tight.
Speed too fast for material and drill size.
Check spindle speed recommendations.Reduce
speed if necessary.
Feed too fast for material and drill size.Reduce feed rate.
No or improper cutting fluid or coolant being
used.
Use cutting fluid, or change to proper fluid or
coolant for material being drilled.
Improperly ground drill bit. Check for proper angles and relief.
Regrind to
proper geometry.
Motor overheating
Electrical circuit fault.
Check current draw in circuit. Make sure current
draw is the same as rating on motor plate.
Oversize drill. Reduce drill size.
Excessive feed. Reduce feed rate.
No cutting fluid, or wrong fluid.
Use correct cutting fluid for the material and
drill.
Table cannot be raised Lack of lubrication. Lubricate.

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10. Wiring Diagrams
ZS items：3~400V 50/60Hz

1
Z items：3~400V 50/60Hz

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The Z items without the light
3~400V50/60Hz

1
110~240V General wiring

1
11. Accessories Party List
Index
Description
Size
Qty.
1
Arbor
（
B16-MT2
）
ZS-B/F
1
Arbor
（
B16-MT2
）
ZS-B/F
1
2 Nut
ZS-B/F
1
3 Chuck
ZS-B/F
1
4 Screw
ZS-B/F
1
5 Chuck Key
ZS-B/F
1
6 Slant Wedge
ZS-B/F
1
7
L Hex Wrench 3 mm
ZS-B/F
1
L Hex Wrench 4 mm
ZS-B/F
1
L Hex Wrench 5 mm
ZS-B/F
1
L Hex Wrench 10mm
ZS-B
1

1
Index
Description
Size
Qty.
1 Arbor（B16-MT2）
Z-B/F
1
Arbor（B16-MT2）
Z-B/F
1
2 Nut
Z-B/F
1
3 Chuck
Z-B/F
1
4 Slant Wedge
Z-B/F
1
5
L Hex Wrench 3 mm
Z-B/F
1
L Hex Wrench 4 mm
Z-B/F
1
L Hex Wrench 5 mm
Z-B/F
1
L Hex Wrench 10mm
Z-B
1
1
2
3
4
5

CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
Our products are frequently updated and improved. Minor changes may not yet be incorporated in this manual.
Always state the year of build, type and serial number of the machine in correspondence.
Manufacturer and importer assume no responsibility for defects which result from not reading the manual carefully
or wrong use of the machine. No rights can be derived from this manual.
All rights reserved. No part of this booklet may be reproduced in any form, by print, photoprint, microfilm or any
other means without written permission from the publisher.
© Huberts bv, Kennedylaan 14, Veghel, the Netherlands. Internet: www.huvema.nl