Medium
30-60 minutes
Genuine Manufacturer Sourced replacement part used on Hitachi Power Tools. This part is made out of Metal and it is sold individually. Ball bearings are used to reduce friction between rotating parts. The balls or rollers take the load and spin, distributing the weight evenly while the minimal contact area of the ball reduces friction. This reduces wear on the tool and allows it to run smoothly. Bearings experience constant wear when the tool is in operation from pressure, heat, vibration and friction. Because of this, many Bearings need periodic maintenance or replacement.
Ball Bearing 608VVM
OEM part for: Metabo HPT (Hitachi), Tanaka
Part Number: 608VVM
$8.33
In Stock
Ships within 1 business day 
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Compatibility
This Ball Bearing will fit the following 420 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Metabo HPT (Hitachi)
Tanaka
Show More Compatible ModelsThis item works with the following types of products:
- Saw Parts
- Table Saw Parts
- Demolition Hammer Parts
- Drill Parts
- Grinder Parts
- Impact Wrench Parts
- Jig saw Parts
- Miter Saw Parts
- Planer Parts
- Reciprocating Saw Parts
- Hammer Drill Parts
- Rotary Hammer Parts
- Router Parts
- Sander Parts
- Polisher Parts
- Screwdriver Parts
- Shear Parts
- Nibbler Parts
- Circular Saw Parts
- Band Saw Parts
- Cordless Drill Parts
- Engine Parts
- Grass Trimmer Parts
- Trimmer Parts
This part replaces obsolete part #: 608-DDM, 608DDM, 321399
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right part works great
parts fit perfectly grinder runs again
Guest -
March 18, 2023
Verified Purchase
Hitachi hammer drill
As always when I need parts for a tool,a mixer or what have you ereplacement parts comes thru the bearings I bought worked perfect and now it’s back working.
Guest -
November 27, 2022
Verified Purchase
Perfect.
The right part, as described! Fast shipping and a reasonable price.
Kevin -
February 24, 2020
Verified Purchase
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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.
Bearings on armeture went bad. Brushes were worn, needed replacing.
Robert - August 23, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Miter Saw
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Power Drill, Socket set, Needed gear pullers to remove bearings.
1.) I did all the dis-assembly in my shop.
2.) Since the bearings were pressed on and I didn't have gear pullers I went to a machine shop. In twenty minutes we had the bearings off and the new ones on.
3. It took about 20-30 minutes to re-assemble the saw.
4.) 20 year old saw works as well as the first day I got it
Thanks.
2.) Since the bearings were pressed on and I didn't have gear pullers I went to a machine shop. In twenty minutes we had the bearings off and the new ones on.
3. It took about 20-30 minutes to re-assemble the saw.
4.) 20 year old saw works as well as the first day I got it
Thanks.
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Lower ball bearing assembly on motor armature failed.
John - January 20, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Demolition Hammer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Nutdriver
Parts Used
1. Removed the stator cover, as well as motor 'brushes'
2. Used bearing puller to remove old bearing assembly.
3. Tapped new ball bearing assembly in place.
4. Reassembled.
2. Used bearing puller to remove old bearing assembly.
3. Tapped new ball bearing assembly in place.
4. Reassembled.
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Intermittent start/run, Cuts were skewed vertically
Jonathan - May 10, 2021
Tool Type
Miter Saw
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Vise, bearing puller, Wrench to remove blade
1) Remove Blade
2) Open handle remove & Replace Switch
3) Disassemble gear box and remove final drive
4) Remove & Replace bearings (where we used a puller)
2) Open handle remove & Replace Switch
3) Disassemble gear box and remove final drive
4) Remove & Replace bearings (where we used a puller)
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compound miter slide saw nolonger making cabinet grade cuts. Blade wobble.
Jonathon - October 17, 2020
Tool Type
Miter Saw
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Wrench Set, Dremel
Parts Used
Disassembled saw, removed blade, drive cover (inner and outer)tapped drive shaft from housing with dead blow hammer did not have small enough bearing puller. Used dremel and chisel. removed old grease/cleaned. Heated new pinion shaft bearing on 100 watt lightbulb to 200F and tapped into place. Reassembled drive, greased with EP Moly and reassembled. Saw cuts like new.
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2 main bearing broken.
Minh - May 27, 2020
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, 1/2 \\
1. Remove cover.
2. Drive off the 2 bearing.
3. Drive 2 bearing in.
4. Install all back.
5. Test.
6. Put the tool to work.
2. Drive off the 2 bearing.
3. Drive 2 bearing in.
4. Install all back.
5. Test.
6. Put the tool to work.
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motor support bearings worn out
Bret - January 29, 2019
Tool Type
Miter Saw
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, dead blow, allen wrenches,screwgun
replaced with new bearings simply but needed dead blow to remove old and seat new bearings
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I had bearing failure on the armature lg bearing & also in the gear spindle. I also replaced two broken pointers, a bad cord, & installed a new cord with clips that had broken.
Stephen - August 5, 2018
Tool Type
Miter Saw
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Bench Grinder, Hammer , Bearing Puller, Putty Knifes,Dsocket
1) Disassembled the saw & ordered the parts I needed to repair. When replacing bearings it's best to replace all of them due to their age.
2) I began the repair on the bearings on the armature the small one first. It came right off with the bearing puller I cleaned the tiny shaft & placed the new bearing in the shaft and tapped with the hammer once square pushed it in by using an 8 inch C-Clamp.
3) The larger bearing on the other end by the fan was really bad but the puller had to be modified so I could get behind the bearing to be able to pull it off. Once off the same procedure was used to install the larger one.
4) The Armature bearings have been replaced now to reinstall it into the handle portion, cleaned then installed the new bearing, installed the armature then installed the set of new brushes & reinstalled the handle section to the saw.
5) The gear spindle bearings I thought would be a challenge but the larger recessed bearing came right off easily by pulling the aluminum holder with the bearing once off push the bearing out if the aluminum holder with your fingers.
6) The smaller bearing on the end by the gear was so close I had to use 2 putty knifes to pry off enough to be able to get 2 larger screw drivers under it to finish prying off.
7) Once apart clean and reinstall both bearings being mindful to assemble the larger one first into the aluminum holder & making sure it starts square. For squeezing this on I used a deep well socket that fit over the shaft but making sure it was also touching the inner race as not to damage the bearing. I then squeezed it on by using the C-Clamp it will stop in the correct place on the shaft by itself. Now for the smaller bearing in the other end start square then squeeze on but this time you have to use a small washer that fits over the small shaft cause the bearing goes by the end if the shaft by .020 there bearings installed.
8) Grease and install into saw finish installing blade guards and new blade.
9) I then installed the new cord with clips and new pointers.
All parts now installed and the saw is like new again. I have had and use this saw so much I hated to buy a new one because of it' simplicity I am very pleased with the repair as well as ereplacement.com for making the parts available for purchase. Just take your time and pay attention to detail and you will have the same success.
2) I began the repair on the bearings on the armature the small one first. It came right off with the bearing puller I cleaned the tiny shaft & placed the new bearing in the shaft and tapped with the hammer once square pushed it in by using an 8 inch C-Clamp.
3) The larger bearing on the other end by the fan was really bad but the puller had to be modified so I could get behind the bearing to be able to pull it off. Once off the same procedure was used to install the larger one.
4) The Armature bearings have been replaced now to reinstall it into the handle portion, cleaned then installed the new bearing, installed the armature then installed the set of new brushes & reinstalled the handle section to the saw.
5) The gear spindle bearings I thought would be a challenge but the larger recessed bearing came right off easily by pulling the aluminum holder with the bearing once off push the bearing out if the aluminum holder with your fingers.
6) The smaller bearing on the end by the gear was so close I had to use 2 putty knifes to pry off enough to be able to get 2 larger screw drivers under it to finish prying off.
7) Once apart clean and reinstall both bearings being mindful to assemble the larger one first into the aluminum holder & making sure it starts square. For squeezing this on I used a deep well socket that fit over the shaft but making sure it was also touching the inner race as not to damage the bearing. I then squeezed it on by using the C-Clamp it will stop in the correct place on the shaft by itself. Now for the smaller bearing in the other end start square then squeeze on but this time you have to use a small washer that fits over the small shaft cause the bearing goes by the end if the shaft by .020 there bearings installed.
8) Grease and install into saw finish installing blade guards and new blade.
9) I then installed the new cord with clips and new pointers.
All parts now installed and the saw is like new again. I have had and use this saw so much I hated to buy a new one because of it' simplicity I am very pleased with the repair as well as ereplacement.com for making the parts available for purchase. Just take your time and pay attention to detail and you will have the same success.
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Router bottom bearing replacement
kelly - March 30, 2018
Tool Type
Router
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Adjustable Wrench, Router wrenches, vise grips, large deep socket
Parts Used
Completely disassembled the router, used a deep socket to drive out the bearing.
Special care taken to put all the wires back into place and the speed ratio sensor
so that the magnet fit back onto the recess of the sensor
reassembly was completed and the router runs smoothly
Special care taken to put all the wires back into place and the speed ratio sensor
so that the magnet fit back onto the recess of the sensor
reassembly was completed and the router runs smoothly
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Router bearing seized on front end of Hitachi mv12c
David - September 16, 2017
Tool Type
Router
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Bearing puller
Disassembled Hitachi Mv12c router, used bearing puller to removed old bearing, inserted new bearing and rubber gasket. Also replaced carbon brushes as this router was being used in a CNC so was in operation for long periods of time. Reassembled and tested. Runs perfectly!
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Periodic bearing squeal and auto break feature did not engage.
timothy - January 14, 2017
Tool Type
Miter Saw
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver, Pliers, Power Drill, Socket set, Wrench Set, Nutdriver, Bench Vice
1-Took blade off, took off screws to remove bearing assy.
2- Pried off both pressed on bearings and used vice to press on new bearings.
3- The process in line 2 is difficult and requires some knowledge in this area. (recommend buying the whole assembly for 73 dollars)
4- Screwed assembly back in.
5- For main spring, unscrewed the two set screws holding main pin and removed pin.
6- Put in new spring and reassembled.
7- Put in new switch to fix auto break function.
8- Put in new brushes which also helped the auto breaking.
2- Pried off both pressed on bearings and used vice to press on new bearings.
3- The process in line 2 is difficult and requires some knowledge in this area. (recommend buying the whole assembly for 73 dollars)
4- Screwed assembly back in.
5- For main spring, unscrewed the two set screws holding main pin and removed pin.
6- Put in new spring and reassembled.
7- Put in new switch to fix auto break function.
8- Put in new brushes which also helped the auto breaking.
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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.
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