Central Machinery 39955 Guía de referencia rápida

20” PRODUCTION DRILL PRESS

Model

39955

ASSEMBLY & OPERATING INSTRUCTIONS

Visit our website at: http://www.harborfreight.com

Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

tained herein may be reproduced in any shape or form without the express written consent of Harbor Freight

Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual

product may differ slightly from the product described herein. Tools required for assembly and service may not

be included.

For technical questions or replacement parts, please call 1-800-444-3353.

Revised Manual 03c, 09l

SKU 39955 For technical questions, please call 1-800-444-3353. Page 2

THANK YOU for choosing a HARBOR FREIGHT TOOLS product. For future reference, please complete the

owner’s record below:

Model____________ Serial No. ______________ Purchase Date _______________

SAVE THE RECEIPT, WARRANTY AND THESE INSTRUCTIONS. It is important that you read the entire

manual to become familiar with the unit BEFORE you begin assembly.

Technical Speciﬁcations

Tool Name: 20” Production Drill Press

Item Number: 39955

Power Source: 120V/ 60 Hz, Single Phase

Motor: 1-1/2 HP

Speeds in RPM: 180, 310, 320, 500, 540, 570, 1180, 1565, 1805, 2190, 2795, 3865

Spindle Stroke: 4”

Spindle: MT3

Swing: 20”

Column Diameter: 3-5/8”

Chuck Capacity: 5mm to 20mm (.197” to .787”) JT3 Taper

Max. Spindle to Base: 45-1/4”

Spindle to Table: 26-1/8”

Table: 16-3/4” x 1-11/16”

Wet Table: With Oiler

Table Slot: 1” x 1/2”

Warning: The warnings, cautions and instructions discussed in this instruction manual

cannot cover all possible conditions and situations that may occur. It must

be understood by the operator that COMMON SENSE AND CAUTION ARE

FACTORS WHICH CANNOT BE BUILT INTO THIS PRODUCT, BUT

MUST BE SUPPLIED BY THE OPERATOR.

The Operator

PLEASE REMEMBER:

Do not operate the product if under the inﬂuence of alcohol or drugs. Read warning labels on prescriptions to

determine if your judgment/reﬂexes might be impaired.

Do not wear loose clothing or jewelry as they can be caught in moving parts.

Protective gloves and nonskid footwear is recommended.

Wear restrictive hair covering to contain long hair.

Use eye and ear protection. Always wear ANSI approved impact safety goggles and

dust mask or respirator when working around metal, wood and chemical dusts and mists.

Wear a full face shield if your are producing metal or wood ﬁlings.

Do not reach over or across running machines.

Maintain proper footing and balance at all times.

REV 05l

SKU 39955 For technical questions, please call 1-800-444-3353. Page 3

Work Area

TO AVOID RISK OF PERSONAL INJURY, EQUIPMENT DAMAGE, FIRE AND SHOCK, MAKE SURE YOUR

WORK AREA IS:

Free of damp, wet or rainy conditions.

Free of children (never let them handle tools or machinery).

Well-lit.

Clean and uncluttered.

Before Operating

Before using any tool, any part that appears damaged should be carefully checked to determine that it will

operate properly and perform its intended function.

Before operating your Drill Press check for damaged parts.

Make certain that the power is OFF before plugging the tool in.

Make sure all clamps, locks and bolts are tight.

Always check that adjusting keys and wrenches are removed from the machine work surface before plugging

it in.

Use grounded receptacle only for 110 Volt hookup.

Give the Drill Press a test run. If it makes an unfamiliar noise or vibrates irregularly, turn it off, unplug it and

have the problem corrected by a qualiﬁed technician.

Make certain to turn off and unplug the Drill Press when doing any maintenance. The tool should always be

turned off and unplugged when not in use.

Keep Guards in place and in working order.

Do not abuse the power cord. Do not yank on cord to disconnect it from outlet. Keep the cord away from

heat, oil and sharp edges.

Note: Performance of this tool may vary depending on variations in local line voltage. Extension

Cord usage may also affect tool performance.

Grounding/Voltage Warning

Common household current is 110-120 volts. As long as the outlet used with the tool is rated from 110-120V

there will be no complications using it with household receptacles. Plug the tool into a 110-120V properly

grounded outlet protected by a 15-amp, dual element time delay or circuit breaker.

NEVER try to plug a 110-120V tool into a 220-240V circuit or serious complications and possible injury to the

operator may occur. The plugs have different shapes to prevent this.

This tool has a three-prong plug. The third (round) prong is the ground. Cutting off the ground will result in a

safety hazard and void the warranty.

If the outlet you are planning to use is the two-prong type, do not remove or alter the grounding prong in any

manner. Use an adapter and always connect the grounding plug to a known grounding source. It is recommended

that you have a qualiﬁed electrician replace the two-prong outlet with a properly grounded three- prong outlet.

SKU 39955 For technical questions, please call 1-800-444-3353. Page 4

Unpacking

Unpack and check contents. Make sure you have all parts described below. If any parts are missing or

broken, please call Harbor Freight Tools at

1-800-444-3353.

REV 03c,08l

SKU 39955 For technical questions, please call 1-800-444-3353. Page 5

Extension Cords

Your tool has a three-prong plug, therefore you must use a three-prong extension cord. Only use rounded

jacket extension cords listed by the Underwriters Laboratories (UL). Improper use of extension cords may

cause inefﬁcient operation of your tool which can result in overheating. Be sure your extension cord is rated to

allow sufﬁcient current ﬂow to the motor.

If you are using the tool outdoors, use an extension cord rated for outdoor use (signiﬁed by “WA” on the

jacket).

The extension cord must have a minimum wire size depending on the amperage of the tool and the length of the

extension cord. This size is determined by its AWG (American Wire Gauge) rating. The smaller the gauge, the

greater the cable’s capacity. The amount of cords used does not matter: Total length determines the minimum

AWG rating. Every cord must meet the AWG rating. Use the chart below to determine what AWG rating is required

for your situation. Cord length is rated in feet. Harbor Freight Tools can supply UL listed and outdoor rated

cords in multiple AWG ratings if needed.

AWG RATING CHART

CORD LENGTH 25’ 50’ 75’ 100’ 125’ 150’ 175’ 200’

AMPS AWG AWG AWG AWG AWG AWG AWG AWG

0-10.0 18 18 16 16 14 14 12 12

10.1-13.0 16 16 14 14 14 12 12 12

13.1-15 14 14 12 12 12 12 12 —-

15-18 14 12 12 12 12 12 —- —-

DoNoT m o D i f y y o u r p l u g i N a N y w a y . ify o u h a v e a N y D o u b T , c a l l aq u a l i f i e D e l e c T r i c i a N .

Assembly

Your Drill Press will require assembly. To assist you with assembly and operation please refer to the Assembly

Diagram and Parts List located on pages 14, 15, 16 and 17. Lay out all parts onto a clear section of your

workbench prior to assembly.

Mounting Surface: Ideally, the base should be bolted down prior to the assembly of other components. The

mounting surface must be ﬂat, level and capable of supporting the weight of the Drill combined with the

materials to be drilled.

Before assembling, remove all traces of the packing grease from the Drill Press and wipe all parts thoroughly

with a clean dry cloth. Apply a thin coating of light machine oil to the Table, Column, and Base to prevent rust.

Column Assembly to Base

Step 1) With the Base (part #10B) on a ﬂat level surface, bolt on the Column Support (part #3B) using

the four (4) M12 Hex Head Screws (part #9B). Tighten Firmly.

Step 2) Insert the Column (part #11B) into its support and ﬁrmly secure this assembly in place with

the Hex Socket grub Screws (part #7B). It may be necessary to unscrew the Hex Socket

Screws (part #7B) slightly to ensure that they do not protrude internally, as this will prevent

the Column from sliding fully into position in the Tube.

SKU 39955 For technical questions, please call 1-800-444-3353. Page 6

Table to Column

Step 1) Locate the Elevation Worm Gear Shaft (part #19B), the Crank Handle (part #5B) and the

Table Crank (part #4B). Insert the Elevation Worm Gear Shaft into the Table Support and

extend the Shaft through the opening as far as possible.

Step 2) Locate the Table Crank (part #4B). The Crank is to be installed on the Elevation Worm Gear

Shaft (part #19B). A Set Screw (part #7B) is to be aligned with the ﬂat portion of the Shaft.

Get the Crank as close as possible to the Support, and then tighten the Set Screw.

(See Figure 1).

Step 3) Screw the Crank handle into the Table Crank. Use an adjustable wrench to tighten the Crank

Handle securely.

Step 4) Loosen the Set Screw (part #2B) in the Column Collar (part #1B) with the 3mm Hex wrench

and remove the Collar and Rack from the Column.

Step 5) Locate the Rack (part #6B) and with the smooth end of the Rack pointing upward, slide it

down through the large, round opening in the Table Support (part #3B). Engage the Rack into

the Gear Mechanism found on the inside opening of the Table Support (See Figure 2 below).

Step 6) While holding the Rack and the Table Support as assembled, slide both down over the Col-

umn. Slide the Rack down until the Rack is positioned against the lower Column Support.

Step 7) Replace the Collar (part #1B), with the bevel side down, which was removed in Step 4.

Tighten it with the Hex wrench used in Step 4.

Note: In order for the Rack to slide when the Table is swung to the left or right on the Column, the

Collar must sit loosely over the Rack. Only tighten the Set Screw enough to keep the Collar

in place. Over tightening the Set Screw may result in breaking of the Collar.

Step 8) Check the Column Collar for proper adjustment. The Collar should sit evenly on the Column

and the Rack should slide freely when the Table is rotated 360 degrees.

Figure 1

Figure 2

SKU 39955 For technical questions, please call 1-800-444-3353. Page 7

Step 9) Locate the Column Clamp (part #17B) and insert it into the Table Support. Once inserted,

tighten it by hand. Once this is done, rotate the Worm clockwise with the Crank. If necessary,

loosen the Set Screw in the Crank and reposition the Crank as close to the Table Support as

possible. Tighten the Set Screw.

Step 10) Check the “gap”, i.e., the clearance between the Table Crank and the Table Support. If the

gap is larger than 1/32”, crank backlash will be minimized.

Head to Column

Step 1) With assistance, slide the Head (part #45A) onto the Column as shown in the Assembly

Diagram. It may be necessary to unscrew the Head Lock Set Screws (part #15A) slightly to

ensure that they do not protrude internally, as this will prevent the head from sliding fully into

position. Align the Head with the Base (#10B) and ﬁrmly secure it into position with the Set

Screws. Screw the three (3) Rods (part #19A) ﬁrmly into the Hub (part #20A).

Chuck

Step 1) The Chuck (part #30) is to be assembled to the Spindle (part #32) according to the follow-

ing instructions. Loosely slide the Chuck onto the Spindle. Make certain that the teeth of the

Chuck are not exposed. Put a piece of scrap wood on the table to protect the Chuck nose.

Pull the Spindle down using the Handle. Press the Chuck nose hard against the scrap wood

on the table until the Chuck is forced into a solid ﬁt. The Chuck is pressure ﬁtted.

Pulley Cover Knob

Step 1) Locate the Knob (part #21) and the pan head screw (part #7). Slide the Knob into the hole in

the front of the Pulley Cover. Twist the screw into the knob from the underside of the Pulley

Cover. Screw on tightly.

Oiler System

Step 1) Use four M5x0.8-8 Screws (#51A) to fasten the two Oil Brackets (#50A). Insert the Oil Bottle

with Spigot Assembly (#52A and #53A) into the Oil Brackets.

SKU 39955 For technical questions, please call 1-800-444-3353. Page 8

Light Bulb

Screw a light bulb (not more than 60 Watt) into the Socket (part #48A) inside the Head.

REV 03c

SKU 39955 For technical questions, please call 1-800-444-3353. Page 9

Operation

To assist you with operation of your Drill Press, please refer to the instructions below and to the Parts Listings

and Assembly Diagrams on pages 14 through 17 of this manual.

Never force the tool or attachment to do the work of a larger industrial tool. It is designed to do the job better

and more safely at the rate for which it was intended.

Settings and Adjustments

Before adjustments are made, ensure that the machine is SWITCHED OFF AND UNPLUGGED. Also make

sure all locking handles and securing screws are fully tightened when adjustments are complete.

Changing the Pulley Speeds

The Drill Press has twelve (12) different pulley speeds: 180 RPM, 310 RPM, 320 RPM, 500 RPM, 540 RPM,

570 RPM, 1180 RPM, 1565 RPM, 1805 RPM, 2190 RPM, 2795 RPM, and 3865 RPM. A full chart of belt

arrangements for each drill speed is located on the inside of the Pulley Cover.

Step 1) Undo the Belt Tension Lock Knobs (please refer to Know Your Drill Press on page 8 of this

manual) on both sides of the head. Turn the Belt Tension Handle (14A) clockwise to bring the

Motor Pulley close to the Spindle Pulley which will allow the belts to be moved easily.

Note: Please refer to the Pulley and Spindle Diagram with regard to the following steps.

Step 2) Lubricate the Idler Pivot Shaft (part #4) and the Pulley Idler with light grease, and install it in

its mounting place between the motor and spindle pulleys.

Step 3) To change the speed of the Drill, you will need to move the belt to the appropriate place on

each pulley. Hold the Lifting knob (part #21) and lift up on the Pulley Cover (part #13). Manu-

ally move the belt into the appropriate grooves on the pulleys which correspond to the speed

desired. Consult the chart inside the pulley cover and position the belts on the pulleys ac-

cording to the drill speed required.

Step 4) Turn the Belt Tension Lever counterclockwise so that tension is applied to the belts. Tension

is correct when the belts deﬂect by approximately 1/2” at their centers of run when using rea-

sonable thumb pressure. Lock the motor in this position with the Locking Knob.

180 310 320 500

540 570 1180 1565

1805 2190 2795 3865

SKU 39955 For technical questions, please call 1-800-444-3353. Page 10

To Adjust the Table

The table rotates 360 degrees and tilts 45 degrees right and left. The table is capable of being raised, lowered

and swiveled about the column.

1) Raise or lower the Table by slackening off the Arm Locking Handle and turning the crank clockwise to

raise it and counterclockwise to lower it.

2) The Table can be swiveled about the Column by loosening the Arm Locking Handle. The Table

assembly and Rack move as one around the Table.

3) You can tilt the Table by loosening the Bevel Table Locking Screw (part #12B and 14B) and tilting the

Table to the desired angle.

The Table is ﬁtted with an Angle Scale to determine the degree of slant. For all normal operations the Table

should be set at 0 degrees. To ensure that the drill is entirely perpendicular to the table, insert a piece of

straight round bar in the chuck, place a Square on the Table and bring it up to the round bar. Adjust the Table

tilt if necessary so that the Table is correctly aligned.

Setting the Drilling Depth

Located near the Spindle Feed Shaft is a Depth Stop Collar (A) (See Figure below) which contains a

graduated scale. The collar is capable of turning around the Shaft, and may be locked in place by a Locking

Screw (B-below). Degrees are measured in both inches and metric.

Step 1) With power OFF, lower the Chuck until the drill contacts the surface of the work piece. Hold it

in that position.

Step 2) Loosen the Locking Screw and turn the collar so that the measurement for the depth of the

hole required is in line with the Pointer (C).

Step 3) Lock the Collar in position using the Locking Screw.

The Drill is now set to drill holes to your predetermined depth from that particular starting point.

Figure 3

REV 03c

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