Medium
15-30 minutes
This is an OEM sourced replacement part designed for use with Makita drills/drivers. It allows user to secure drill bits. The ratcheting action clicks the jaws tightly into place for reduced bit slippage. If your drill\'s bit retention is suffering, the rotation feels stiff, or the chuck has seized up entirely, a new chuck should fix the problem. Please note the screw used to secure this chuck it is sold separately.
Keyless Drill Chuck 766027-7
OEM part for: Makita
Part Number: 766027-7
$52.84
In Stock
Ships within 1 business day 
Jump To:
Frequently Purchased Together ?
Compatibility
This part will fit the following 45 machines
Makita
BDF452HW Drill / Driver View Diagrams & Manuals
BHP452 18V LXT Lithium-Ion Cordless 1/2" Hammer Drill-Driver View Diagrams & Manuals
BDF453 18V 1/2" Cordless Driver Drill View Diagrams & Manuals
BDF452 Cordless 1/2" Driver-Drill View Diagrams & Manuals
LXFD01CW 18V Compact Lithium-Ion Cordless 1/2" Driver-Drill View Diagrams & Manuals
LXFD01 18V LXT Lithium-Ion Cordless 1/2" Driver-Drill View Diagrams & Manuals
LXFD01Z 18V LXT Lithium-Ion Cordless 1/2" Driver-Drill View Diagrams & Manuals
LXPH05Z 18V LXT Lithium-Ion Brushless Cordless 1/2 Hammer Driver-Drill View Diagrams & Manuals
LXPH01 18V LXT Lithium-Ion Cordless 1/2 Hammer Driver-Drill Kit View Diagrams & Manuals
LXPH01Z 18V LXT Lithium-Ion Cordless 1/2 Hammer Driver-Drill View Diagrams & Manuals
LXPH01CW 18V LXT Lithium-Ion Cordless 1/2 Hammer Driver-Drill View Diagrams & Manuals
LXPH05 18V LXT Lithium-Ion Brushless Cordless 1/2 Hammer Driver-Drill View Diagrams & Manuals
XFD01 18V LXT Lithium-Ion Cordless 1/2" Driver-Drill Kit View Diagrams & Manuals
XFD01RW 18V Compact Lithium-Ion Cordless 1/2" Driver-Drill Kit View Diagrams & Manuals
XPH01RW 18V Compact Lithium-Ion Cordless 1/2" Hammer Driver-Drill Kit View Diagrams & Manuals
XPH06 18V LXT Lithium-Ion Cordless 1/2" Hammer Driver-Drill Kit View Diagrams & Manuals
XPH01 18V LXT Lithium-Ion Cordlesss 1/2" Hammer Driver-Drill View Diagrams & Manuals
XPH12 18V LXT - 1/2" Hammer Driver-Drill View Diagrams & Manuals
XPH10 Makita 18V Compact Cordless 1/2" Hammer Driver-Drill View Diagrams & Manuals
BDF453H (Type 2) Drill View Diagrams & Manuals
BDF453 (Type 2) Drill View Diagrams & Manuals
BDF453Z (Type 2) Drill View Diagrams & Manuals
BHP452H2 (Type 2) Drill View Diagrams & Manuals
BHP452H (Type 2) Drill View Diagrams & Manuals
BHP452HW (Type 2) Drill View Diagrams & Manuals
BHP452 (Type 2) Drill View Diagrams & Manuals
BHP453H (Type 2) Drill View Diagrams & Manuals
BHP453 (Type 2) Drill View Diagrams & Manuals
BHP453Z (Type 2) Drill View Diagrams & Manuals
XFD061 Drill View Diagrams & Manuals
XFD10 Drill View Diagrams & Manuals
XFD10R Drill View Diagrams & Manuals
XFD10Z Drill View Diagrams & Manuals
XFD12R Drill View Diagrams & Manuals
XFD12T Drill View Diagrams & Manuals
XFD12Z Drill View Diagrams & Manuals
XFD131 Drill View Diagrams & Manuals
XPH102 Drill View Diagrams & Manuals
XPH10R Drill View Diagrams & Manuals
XPH10Z Drill View Diagrams & Manuals
XPH12M Drill View Diagrams & Manuals
XPH12R Drill View Diagrams & Manuals
XPH12T Drill View Diagrams & Manuals
XPH12Z Drill View Diagrams & Manuals
XPH131 Drill View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Drill Parts
- Cordless Drill Parts
- Hammer Drill Parts
This part replaces obsolete part #: 766008-1, 763193-1
Repair Videos ?
Watch the Repair Video for
Keyless Drill Chuck
Articles:
|
Broken gearboxes and sticky chuck screws can make removing a drill chuck difficult. This article explains the tricks you...
August 12, 2010
|
|
Drill Chuck Stuck? Step-by-step instructions show you how to remove a drill chuck when the retaining screw is stripped, ...
April 18, 2016
|
Customer Part Reviews ?
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Keyless Drill Chuck
No questions have been asked yet
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Chuck was jammed in closed position with a square bit in it.
Robert - June 15, 2016
👍 16 of 20 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Had to replace gear box, chuck, and screw (reverse threads) that secures chuck. Recommend only tighten and loosen chuck by hand, do not hold chuck and use motor to tighten chuck. Save yourself some $.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Chuck worn out
James - December 29, 2016
👍 7 of 7 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Star drive, long #45
Parts Used
Remove internal screw, counter clockwise. Remove chuck with star drive, #45, clockwise. Need to clamp drill tightly first. Star drive has to be long to reach into chuck properly.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill chuck disintegrated while drilling
Michael - June 25, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Adjustable Wrench, Sawzall
Parts Used
1. Removed all loose parts
2. Unscrewed screw holding drill chuck
3. Attempted to unscrew the body of the drill chuck with adjustable wrench
4. Attempted to unscrew the body of the drill chuck with an adjustable wrench and vise.
5. Cut off most of the body of the drill chuck with a sawzall
6. Unscrewed remaining body by hand
7. Screwed new drill chuck onto drill
8. Screwed in retaining screw.
2. Unscrewed screw holding drill chuck
3. Attempted to unscrew the body of the drill chuck with adjustable wrench
4. Attempted to unscrew the body of the drill chuck with an adjustable wrench and vise.
5. Cut off most of the body of the drill chuck with a sawzall
6. Unscrewed remaining body by hand
7. Screwed new drill chuck onto drill
8. Screwed in retaining screw.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill chuck failure
John - February 6, 2017
👍 3 of 4 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers
1. Opened the jaws on the chuck to access the retainer screw for the chuck. Note: The retainer screw has left-hand threads, so turning the screw to the left acutely tights the threads.
2. Back the chuck off the drive stem, the chuck has right hand threads, so it backs off by left hand rotation.
3. Inspection of components, all looks good and matches.
4. Screw the chuck on till it bottoms out.
5. Insert the retainer screw and tighten down.
6. Tested chuck, all systems in good working order.
2. Back the chuck off the drive stem, the chuck has right hand threads, so it backs off by left hand rotation.
3. Inspection of components, all looks good and matches.
4. Screw the chuck on till it bottoms out.
5. Insert the retainer screw and tighten down.
6. Tested chuck, all systems in good working order.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Slipping gear box
Mitsuko - August 25, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
1. Remove plastic cover/case, only one side
2. Remove gear box with chuck, hammer drill chuck is right hand screw, to prevent chuck loose with reverse rotation, inside chuck has left hand pan head slotted screw. Removing left hand screw is easy using impact driver, however, I expect chuck, right hand screwed may not loose due to hummer action operation too many times. So I bought a gear box and a chuck.
3 Attach chuck to gear box.
4.Insert gear box/chuck inside case/cover. perfect alignment/position of all parts will be required before case/cover closing together.
5. Return self tapping screws, even self tap screws should not be "cross screw".
6. I don't know the best way to remove chuck from gear box. Anyway gear box is useless, remove all gears from gear box and use special tool, chuck may be removed.
7. My hammer drill has BL motor and last longer so it can be equivalent a new hammer drill after replace gear box.
2. Remove gear box with chuck, hammer drill chuck is right hand screw, to prevent chuck loose with reverse rotation, inside chuck has left hand pan head slotted screw. Removing left hand screw is easy using impact driver, however, I expect chuck, right hand screwed may not loose due to hummer action operation too many times. So I bought a gear box and a chuck.
3 Attach chuck to gear box.
4.Insert gear box/chuck inside case/cover. perfect alignment/position of all parts will be required before case/cover closing together.
5. Return self tapping screws, even self tap screws should not be "cross screw".
6. I don't know the best way to remove chuck from gear box. Anyway gear box is useless, remove all gears from gear box and use special tool, chuck may be removed.
7. My hammer drill has BL motor and last longer so it can be equivalent a new hammer drill after replace gear box.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Drill chuck was worn and gearbox was not working as it should
Dan - April 29, 2022
Tool Type
Cordless Drill
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Allen wrench
The gearbox that I ordered was in pieces the gears and bearings was all apart .and some of the bearings were missing along with the two roller pins .No instructions on how this is assembled .No one would help me so I used some pieces out of my old gear box and just figured out how it was assembled
Did you find this story helpful?
Thanks for voting and helping fellow customers!
chuck would not hold drill bits under load
Raymond - January 21, 2022
Tool Type
Cordless Drill
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, 7 inch long 3/8 allen key, hammer
REMOVE CHUCK
1. Set drill power level on "1", "drill" setting. Important
2. Hand-twist until fully open drill chuck
3. Insert long flat edge screwdriver and turn clockwise (reverse threaded) to remove drill chuck screw.
4. Secure drill to edge of workbench. Insert allen key. Be sure to open the chuck fully by turning by hand several revolutions against resistance. Use hammer to whack allen key and unthread chuck. It may take quite a few tries.
OPEN DRILL CASE AND REMOVE GEAR ASSEMBLY
5. Unscrew drill case using Philips head screwdriver. Separate case. Be sure the trigger stays in proper position.
6. Pull back metal tab resting on armature.
7. Free white plastic gear assembly. Note the bottom of the armature assembly has a notch for alignment in the case. There's also a line on top of the armature for alignment.
8. Insert new gear assembly. It can be fussy.
9. Reassemble case, making sure trigger is working.
10. Once assembled thread on new chuck, being sure to keep the chuck wide open.
11. Insert chuck screw and thread counterclockwise to tighten.
12. Watch YouTube videos.
1. Set drill power level on "1", "drill" setting. Important
2. Hand-twist until fully open drill chuck
3. Insert long flat edge screwdriver and turn clockwise (reverse threaded) to remove drill chuck screw.
4. Secure drill to edge of workbench. Insert allen key. Be sure to open the chuck fully by turning by hand several revolutions against resistance. Use hammer to whack allen key and unthread chuck. It may take quite a few tries.
OPEN DRILL CASE AND REMOVE GEAR ASSEMBLY
5. Unscrew drill case using Philips head screwdriver. Separate case. Be sure the trigger stays in proper position.
6. Pull back metal tab resting on armature.
7. Free white plastic gear assembly. Note the bottom of the armature assembly has a notch for alignment in the case. There's also a line on top of the armature for alignment.
8. Insert new gear assembly. It can be fussy.
9. Reassemble case, making sure trigger is working.
10. Once assembled thread on new chuck, being sure to keep the chuck wide open.
11. Insert chuck screw and thread counterclockwise to tighten.
12. Watch YouTube videos.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
One of the 3 gripping tooth of Chuck was broken.
Eduardo - September 30, 2021
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
I threaded the new chuck onto the drill shaft and then installed the retaining screw down the center of the fully open chuck and used a screwdriver to tighten counterclockwise.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Motor ran, but drill didn’t power drill bit
john - July 25, 2020
Tool Type
Cordless Drill
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers
Parts Used
Replaced chuck & clutch
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Broken chuck tooth.
Ryan - February 12, 2020
Tool Type
Cordless Drill
Difficulty
Hard
Time
15-30 minutes
Tools Used
Screwdriver, Allen Wrench, Hammer, penetrating lube
Parts Used
1. Removed reverse thread screw from inside the chuck. It was very difficult due to factory locktite.
2. Attached a large right angle allen wrench in the chuck.
3. With the drill on low gear, smacked the allen wrench with a hammer hard until the chuck spun. This was the most difficult part as it needed to be done with a quick blunt force that was hard to achieve.
4. Unthreaded the bad chuck and installed the new chuck without hammering the new chuck into place.
2. Attached a large right angle allen wrench in the chuck.
3. With the drill on low gear, smacked the allen wrench with a hammer hard until the chuck spun. This was the most difficult part as it needed to be done with a quick blunt force that was hard to achieve.
4. Unthreaded the bad chuck and installed the new chuck without hammering the new chuck into place.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Load More Install Stories
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
