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Central Machinery 43378 - User Manual

Central Machinery 43378
20 pages
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16 SPEED FLOOR DRILL PRESS
Model
43378
SET UP AND OPERATING INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools
®
.
3491 Mission Oaks Blvd., Camarillo, CA 93011
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.
Copyright
©
2000 by Harbor Freight Tools
®
. All rights reserved. No portion of this manual
or any artwork contained herein may be reproduced in any shape or form without the
express written consent of Harbor Freight Tools.
For technical questions or replacement parts, please call 1-800-444-3353.
Cover revised 07i

Questions and Answers

  • Z
    zunderwoodJul 31, 2025
    Why does my Central Machinery Power Tool drill bit burn or smoke?
    • M
      michael66Jul 31, 2025
      Your Central Machinery Power Tool drill bit might be burning or smoking due to several reasons. It could be the incorrect spindle speed, which requires adjustment. A dull drill bit can also cause this issue, so consider replacing it. Drilling too slowly or a lack of lubrication in the cutting area are other potential causes; try drilling faster and lubricating the area.
  • J
    Jenny YoungAug 6, 2025
    What to do if Central Machinery Power Tool drill bit binds?
    • H
      Heather RushAug 6, 2025
      If the drill bit binds, it might be because the workpiece is pinching the drill bit; reposition the workpiece and lubricate the drill. A dull drill bit could also be the cause, so replace it if necessary. If you're applying too much feed pressure, pull the Feed Handle slowly. Loose belts can also cause binding, so adjust the motor and spindle belt tension.
  • A
    aliciamooreAug 12, 2025
    Why does my Central Machinery 43378 make unusual noise?
    • B
      Blake McdonaldAug 12, 2025
      An unusual noise from your Central Machinery Power Tool could be due to several factors: incorrect belt tension (adjust the belt tension), a dry spindle (lubricate the spindle), a loose spindle pulley (check the pulley nut), or a loose motor pulley (tighten the set screws).
  • C
    Cameron GarciaAug 18, 2025
    How to fix Central Machinery 43378 Power Tool drill bit wobble?
    • J
      johnbrewerAug 18, 2025
      If your Central Machinery Power Tool drill bit wobbles, it could be due to a bent bit (replace the drill bit), worn spindle bearings (replace the spindle bearings), the drill bit not correctly installed in the chuck (reinstall the drill bit), or the chuck not properly installed (reinstall the Chuck and Arbor assembly).
  • J
    Janice SmithAug 25, 2025
    What to do if Central Machinery 43378 feed handle returns slowly or too fast?
    • R
      richard30Aug 25, 2025
      To address a feed handle that returns slowly or too fast on your Central Machinery Power Tool, adjust the quill spring.

Summary

Specifications

Safety Warnings and Precautions

Vibration Hazard

Drill Press Safety Warnings and Precautions

Unpacking

Assembly

Operation

Setting the Depth Scale to Drill to a Specified Depth

Procedure for setting the drill depth stop for accurate drilling.

Using the Depth Scale to Measure Depth While Drilling

Locking the Chuck at a Specific Depth

Tilting the Table

Maintenance

Chuck and Arbor Maintenance

Procedures for removing, installing, and maintaining the chuck and arbor.

Adjusting the Feed Handle Return Quill Spring

General Maintenance

Troubleshooting

Head Assembly Parts List

Head Assembly Drawing

Pulley and Spindle Assembly Parts List

Pulley and Spindle Assembly Drawing

Base and Table Assembly Parts List

Base and Table Assembly Drawing

Central Machinery 43378 Specifications

General IconGeneral
Motor1/2 HP
Voltage120V
TypeBench Grinder
Wheel Diameter8 inches
Arbor Size5/8 inches
Swing8 inches

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