Craftsman Comprehensive 103 Drill Press Manual for Installation and Operation

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INSTALLATION:

Three 1 3/32 inch diameter holes have been pro- vided in the base through which bolts or screws may be inserted to secure the drill press to a well con- structed bench or tool stand.

To install motor loosen the motor mount lock screws, Fig. 1, until the motor mount may be re- moved. Fasten the motor to the motor mount with the bolts, nuts, and washers provided so that when motor mount is reinstalled on the tool, the larger portion of the mount will be down. For convenience, if your motor has a switch, and rotation will be cor- rect, place motor on motor mount so that the switch is on the left side. Direction of rotation of the spindle must be clockwise when viewed from pulley end of spindle.

Mount the motor pulley, No. 60, on motor shaft so that the small diameter is at bottom. For normal speeds, the largest groove on the motor pulley should be in line with the smallest groove on the spindle pulley, No. 1.

Tighten the pulley set screw with the larger Allen wrench, No. 62. If your motor shaft has a flat on it, position the pulley so that the set screw will tighten against the flat.

Place belt around the pulleys and tighten, not excessively, by sliding the motor mount away from tool. Tighten the motor mount lock screws to maintain this tension.

Adjust the screw, No. 42, until the center line of the motor is parallel with the center line of the column.

MOTOR:

A4/£ horsepowei^475Q R.P.M^baH bearing mutor will provide sufficient speed and power for your drill press on general work. For continuous heavy duty operation a 1 /2 horsepower motor is recom- mended.

SPEED:

The spindle speeds obtainable with these 4 step pul- leys are shown in Fig. 2.

SPINDLE

DRILL

MOTOR

R.P.M.

PRESS

(1750 R.P.M)

5000

 

 

2390

 

 

1280

 

 

610

 

 

3970

 

 

1730

 

 

771

 

I

MOTOR PULLEY RAISED ONE GROOVE-/

2905

1050

MOTOR PULLEY RAISED TWO GROOVES-'

FIGURE 2

For slower speeds use a Multi-Speed Attachment available from your nearest Sears retail store or mail order house. Ask for Catalog No. 9A-2338.

LUBRICATION:

The spindle and pulley bearings have been packed with lubricant and will require no further attention for the life of the bearing.

Place a few drops of oil occasionally on the pinion shaft, No. 54. The oil hole is located in the hub on trie right hand side of the head.

To maintain smoothness of operation and to pre- vent rust, occasionally apply a small amount of light cup grease to the quill while in a down posi- tion. With quill still fully extended, reach into the backside of the head and apply grease to the spindle, below the pulley, and to the upper portion of the quill.

Occasionally wipe the column, table and base with an oil soaked rag to prevent rust and maintain smooth sliding action.

CONTROLS:

The chuck is a key-type and has a capacity of 0-1 /2 inch diameter. It is equipped with a lock collar to retain it on the spindle. This eliminates the neces- sity of having collet chucks for such tools that de- velop side thrust while in operation, such as routers.

The feed stop unit provides a means of presetting hole depths before drilling or for drilling several holes to the same depth.

The lock screw, No. 36, when tightened, holds the feed stop collar, No. 37, in place. The two pieces, as an assembly, can be moved on the stop rod for fast positioning by turning the unit a quarter turn and sliding it up or down to an approximate pr.aifir.ri,

The feed stop adjusting collar, No. 34, can then be adjusted to the exact depth desired.

CAUTION: The top of the adjusting collar should never be more than J/s" away from the shoulder of the feed stop collar after an adjustment has been made. If the desired adjustment can not be made within the J/g" allowance, reposition the unit and adjust the feed stop adjusting collar.

The feed stop rod is a gauge, with 5 inches of 1/16 inch graduations, carrying the feed stop and lock nut.

The feed handle is used to raise and lower the chuck 4 inches. It has an automatic spring loaded return action.

The quill lock handle when tight holds the quill at any depth of cut for such operations as shaping, routing, surface grinding, etc. Always release the quill lock before changing position of quill.

The table lock handle and headstock lock handle

control the barrel locks which grip the column. When releasing either of these handles do so with care. Support the part you wish to adjust so that it will not drop too rapidly causing damage to the tool.

The feed return adjusting knob controls the spring tension on the feed lever.

The motor mount has been hinged in order to make the changing of spindle speeds easier. The hinge action incorporated in this motor mount will allow quicker belt changes. To move the belt from one pulley groove to another, pivot the motor for- ward and slip the belt into the desired grooves.

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Contents Craftsman Drill Press Drill Press AssemblyLubrication InstallationMotor SpindleOperation AdjustmentsTypes of Bits Drill SharpeningSafety Parts ListMotor Mount Assy

103.24531, 103.24521 specifications

The Craftsman 103.24521 and 103.24531 are two iconic benchtop drill presses that represent the craftsmanship and reliability of the Craftsman brand. These drill presses are designed for both hobbyists and professional woodworkers, offering a robust performance that meets a variety of drilling needs.

Both models are characterized by their solid construction, featuring a cast-iron base that ensures stability during operation. The cast-iron column adds to the overall rigidity, minimizing vibrations and allowing for precise drilling. The design enhances durability, ensuring that these machines can withstand heavy use over time.

One of the standout features of the Craftsman 103.24521 and 103.24531 is their adjustable speed settings. The speed ranges are typically between 430 to 3100 RPM, allowing users to select the ideal speed for different materials, from wood to metal. This versatility in speed not only enhances functionality but also ensures precision in various drilling applications.

The drill presses come equipped with a keyless chuck, making it easy for users to change drill bits quickly and efficiently. This feature is particularly useful for projects requiring frequent bit changes, as it saves time and enhances productivity. Additionally, the depth adjustment system is user-friendly, allowing for precise control over drilling depths, which is crucial for repetitive tasks.

Another noteworthy characteristic of the Craftsman 103.24521 and 103.24531 is their worktable. The adjustable worktable can be tilted up to 45 degrees, accommodating various drilling angles and enhancing the machine's versatility. The table's surface is often marked with measurement grids, aiding in alignment and improving accuracy.

Safety is a paramount consideration in the design of these drill presses. They feature a stable base to prevent tipping, and many models include safeguards to protect users from accidental start-ups.

In conclusion, the Craftsman 103.24521 and 103.24531 stand out in the realm of benchtop drill presses, combining powerful performance with user-friendly features. Their construction, adjustable speed settings, ease of use, and safety measures make them a valuable addition to any workshop, catering to the needs of both seasoned professionals and enthusiastic DIYers alike.